Integrated Taxonomic Information System - Search Results

Results of: Search in every Kingdom for Taxon Author(s) Name(s) containing 'Hook.'
 
 Kingdom Animalia
  Gnathostenetroides pugio Hooker, 1985 – valid
  Mesanthura hopkinsi Hooker, 1985 – valid
  Metamunna wilsoni (Hooker, 1985) – valid
  Mexicope Hooker, 1985 – valid
  Mexicope kensleyi Hooker, 1985 – valid
  Microjanira biunguiculata (Hooker, 1985) – valid
  Munnogonium wilsoni Hooker, 1985 – invalid
  Pleurocope floridensis Hooker, 1985 – valid
  Cecidomyia foliora Russell and Hooker, 1908 – invalid
 
 Kingdom Fungi
  Bacidia incompta (Borrer ex Hooker) Anzi – accepted
  Ramalina inflata (Hook. f. & T. Taylor) Hook. f. & T. Taylor – accepted
  Dactylina arctica (Hook. f.) Nyl. – accepted
  Masonhalea richardsonii (Hook.) Kärnefelt – accepted
 
 Kingdom Bacteria
  Legionella lytica (Drozanski, 1991) Hookey et al., 1996 – valid
  Angiococcus (ex Jahn, 1924) Hook et al., 1980 – valid
  Lyngbya purpurea (Hooker and Harvey) Gomont – valid
  Angiococcus disciformis (Thaxter, 1904) Hook et al., 1980 – valid
 
 Kingdom Plantae
  Phinaea parviflora (A. Braun & Bouché) Benth. & Hook. f. ex Soler. – not accepted
  Croton acerifolius A. Cunn. ex Hook. – not accepted
  Euphorbia eremophila A. Cunn. ex Hook. – not accepted
  Euphorbia tannensis ssp. eremophila (A. Cunn. ex Hook.) D.C. Hassall – accepted
  Euphorbia tannensis var. eremophila (A. Cunn. ex Hook.) D.C. Hassall – not accepted
  Dodonaea viscosa var. arborescens (A. Cunn. ex Hook.) Sherff – not accepted
  Parathesis (A. DC.) Hook. f. – accepted
  Houstonia acerosa ssp. acerosa (A. Gray) A. Gray ex Benth. & Hook. f. – not accepted – needleleaf bluet
  Houstonia acerosa var. acerosa (A. Gray) A. Gray ex Benth. & Hook. f. – accepted – needleleaf bluet
  Sideroxylon sandwicense (A. Gray) Benth. & Hook. ex Hillebr. – not accepted – 'ala'a
  Houstonia acerosa (A. Gray) Benth. & Hook. f. – accepted – needleleaf bluet
  Xanthocephalum gymnospermoides (A. Gray) Benth. & Hook. f. – accepted – San Pedro matchweed, matchweed
  Acleisanthes wrightii (A. Gray) Benth. & Hook. f. ex Hemsl. – accepted – Wright's trumpets
  Potentilla unguiculata (A. Gray) Hook. f. – not accepted
  Penstemon labrosus (A. Gray) Mast. ex Hook. f. – accepted – San Gabriel beardtongue
  Peperomia polystachya (Ait.) Hook. – accepted
  Pennisetum exaltatum (Andersson) Hook. f. & B.D. Jacks. – not accepted
  Apodanthera mathewsii Arn. ex Hook. – accepted
  Cuscuta umbrosa auct. non Beyr. ex Hook. – not accepted
  Grammica umbrosa auct. non (Beyr. ex Hook.) W.A. Weber – not accepted
  Salix glauca var. villosa auct. non (D. Don ex Hook.) Andersson – not accepted
  Chenopodium humile auct. non Hook. – not accepted – marshland goosefoot
  Erigeron glabellus var. pubescens auct. non Hook. – not accepted
  Pellaea longimucronata auct. non Hook. – not accepted
  Salix acutifolia auct. non Hook. – not accepted
  Euphorbia bifida auct. non Hook. & Arn. – not accepted
  Lilaeopsis attenuata auct. non (Hook. & Arn.) Fernald – not accepted
  Muehlenbeckia axillaris auct. non (Hook. f.) Walp. – not accepted
  Chenopodium rubrum var. humile auct. non (Hook.) S. Watson – not accepted
  Aster attenuatus auct. non Lindl. ex Hook. – not accepted
  Callirhoe pedata auct. non (Nutt. ex Hook.) Gray – not accepted
  Festuca purpurascens Banks & Sol. ex Hook. f. – accepted
  Festuca purpurascens var. purpurascens Banks & Sol. ex Hook. f. – not accepted
  Schoenus tendo Banks & Sol. ex Hook. f. – accepted – bogrush
  Salix drummondiana Barratt ex Hook. – accepted – Drummond's willow
  Salix hookerana Barratt ex Hook. – not accepted
  Salix hookeriana Barratt ex Hook. – accepted – dune willow
  Salix scoulerana Barratt ex Hook. – not accepted – Scouler's willow
  Salix scouleriana Barratt ex Hook. – accepted – Scouler's willow
  Salix brachystachys var. scouleriana (Barratt ex Hook.) Andersson – not accepted
  Salix flavescens var. scouleriana (Barratt ex Hook.) Bebb – not accepted
  Whitia carnosa Benth. & Hook. f. – not accepted
  Notopleura (Benth. & Hook. f.) Bremek. – accepted
  Bifora americana Benth. & Hook. f. ex S. Watson – accepted – prairie bishop
  Spermolepis divaricata (Benth. & Hook. f. ex S. Watson) Raf. ex Ser. – accepted – forked scaleseed, roughfruit scaleseed
  Homalachne (Benth. & Hook.) Kuntze – not accepted
  Sabatia maculata (Benth.) Benth. & Hook. f. – not accepted
  Achimenes picta Benth. ex Hook. – not accepted
  Pedicularis densiflora Benth. ex Hook. – accepted – Indian warrior
  Pedicularis densiflora ssp. densiflora Benth. ex Hook. – not accepted – Indian warrior
  Tydaea picta (Benth. ex Hook.) Decne. – not accepted
  Giesleria picta (Benth. ex Hook.) Regel – not accepted
  Diastema pictum (Benth. ex Hook.) Walp. – not accepted
  Navarretia intertexta (Benth.) Hook. – accepted – needle-leaf pincushion-plant, needleleaf navarretia
  Navarretia intertexta ssp. intertexta (Benth.) Hook. – accepted – needleleaf navarretia
  Navarretia atractyloides (Benth.) Hook. & Arn. – not accepted
  Navarretia atractyloides (Benth.) Hook. & Arn. – accepted – hollyleaf pincushionplant
  Navarretia cotulifolia (Benth.) Hook. & Arn. – accepted – cotulaleaf pincushionplant
  Navarretia pubescens (Benth.) Hook. & Arn. – accepted – downy pincushionplant
  Ceratotheca triloba (Bernh.) E. Mey. ex Hook. f. – accepted – wild foxglove
  Artemisia campestris ssp. borealis var. wormskioldii (Besser ex Hook.) Cronquist – not accepted – field sagewort
  Artemisia campestris var. wormskioldii (Besser ex Hook.) Cronquist – not accepted – northern wormwood, field sagewort
  Cuscuta umbrosa Beyr. ex Hook. – accepted – bigfruit dodder
  Cakile edentula (Bigelow) Hook. – accepted – American searocket
  Cakile edentula ssp. edentula (Bigelow) Hook. – accepted – American searocket
  Cakile edentula ssp. edentula var. edentula (Bigelow) Hook. – not accepted – American searocket
  Cakile edentula var. edentula (Bigelow) Hook. – accepted – American searocket
  Cyrtandra oblongifolia (Blume) Benth. & Hook. f. ex C.B. Clarke – accepted
  Alsophila lurida (Blume) Hook. – not accepted
  Stelechocarpus burahol (Blume) Hook. f. & Thomson – accepted – burahol
  Ramonda heldreichii (Boiss.) Benth. & Hook. f. ex C.B. Clarke – not accepted
  Euphorbia splendens Bojer ex Hook. – not accepted
  Sansevieria cylindrica Bojer ex Hook. – accepted – African bowstring hemp
  Sterigmanthe splendens (Bojer ex Hook.) Klotzsch & Garcke – not accepted
  Tithymalus splendens (Bojer ex Hook.) M. Gómez – not accepted
  Lacanthis splendens (Bojer ex Hook.) Raf. – not accepted
  Euphorbia milii var. splendens (Bojer ex Hook.) Ursch & Leandri – accepted
  Gerbera jamesonii Bolus ex Hook. f. – accepted – Barberton daisy
  Carex arctata Boott ex Hook. – accepted – drooping woodland sedge
  Trichomanes lineolatum (Bosch) Hook. – not accepted – lined bristle fern
  Pellaea densa (Brack.) Hook. – not accepted
  Cyrtopus (Brid.) Hook. f. – accepted
  Pellaea alabamensis (Buckley) Baker ex Hook. – not accepted
  Neyraudia madagascariensis var. zollingeri (Büse) Hook. f. – not accepted
  Ceropegia hookeri C.B. Clarke ex Hook. f. – accepted
  Ceropegia hookeri var. hookeri C.B. Clarke ex Hook. f. – not accepted
  Verbesina encelioides (Cav.) Benth. & Hook. f. ex A. Gray – accepted – golden crownbeard
  Verbesina encelioides ssp. encelioides (Cav.) Benth. & Hook. f. ex A. Gray – not accepted – golden crownbeard
  Anetanthus alatus (Cham. & Schltdl.) Benth. & Hook. f. ex E.A. Durand & B.D. Jacks. – not accepted
  Salix villosa D. Don ex Hook. – not accepted
  Salix glauca ssp. glauca var. villosa (D. Don ex Hook.) Andersson – not accepted
  Salix glauca var. villosa (D. Don ex Hook.) Andersson – accepted – grayleaf willow
  Salix glaucops var. villosa (D. Don ex Hook.) Andersson – not accepted
  Anotis foetida (Dalzell) Hook. f. – not accepted
  Phymaspermum parvifolium (DC.) Benth. & Hook. f. – accepted
  Oldenlandia salzmannii (DC.) Benth. & Hook. f. ex B.D. Jacks. – accepted – Salzmann's mille graines
  Gesneria schiedeana (DC.) Hook. – not accepted
  Layia heterotricha (DC.) Hook. & Arn. – accepted – paleyellow tidytips
  Layia hieracioides (DC.) Hook. & Arn. – accepted – tall tidytips
  Cananga (DC.) Hook. f. & Thomson – accepted – ilang-ilang
  Vigna nilotica (Delile) Hook. f. – not accepted
  Andropogon jwarancusa ssp. laniger (Desf.) Hook. f. – not accepted
  Hierochloe magellanica (Desr.) Hook. f. – not accepted
  Jungermannia multifida var. sinuata Dicks. ex Hook. – not accepted
  Aneura sinuata (Dicks. ex Hook.) Dumort. – not accepted
  Gymnomitrion sinuatum (Dicks. ex Hook.) Huebener – not accepted
  Riccardia latifrons var. sinuata (Dicks. ex Hook.) Lindb. – not accepted
  Riccardia sinuata (Dicks. ex Hook.) Trevis. – not accepted
  Riccardia sinulata (Dicks. ex Hook.) Trevis. – not accepted
  Zygodon conoideus (Dicks.) Hook. & Taylor – accepted
  Abronia mellifera Douglas ex Hook. – accepted – white sand verbena
  Arenaria franklinii Douglas ex Hook. – not accepted – Franklin's sandwort, fringed sagewort
  Arenaria franklinii var. franklinii Douglas ex Hook. – not accepted – Franklin's sandwort
  Astragalus diaphanus Douglas ex Hook. – accepted – transparent milkvetch
  Astragalus drummondii Douglas ex Hook. – accepted – Drummond's milkvetch, Drummond milkvetch, Drummond's milk-vetch
  Astragalus glareosus Douglas ex Hook. – not accepted
  Astragalus inflexus Douglas ex Hook. – accepted – bent milkvetch
  Astragalus lentiginosus Douglas ex Hook. – accepted – freckled milkvetch, speckledpod milkvetch
  Astragalus lentiginosus var. lentiginosus Douglas ex Hook. – accepted – freckled milkvetch, speckledpod milkvetch
  Astragalus miser Douglas ex Hook. – accepted – timber milkvetch, weedy milkvetch
  Astragalus miser var. miser Douglas ex Hook. – accepted – timber milkvetch
  Astragalus purshii Douglas ex Hook. – accepted – woollypod milkvetch, Pursh's milkvetch, Pursh loco, Pursh's milk-vetch
  Astragalus purshii var. purshii Douglas ex Hook. – accepted – woollypod milkvetch, Pursh's milk-vetch, Pursh's milkvetch
  Astragalus succumbens Douglas ex Hook. – accepted – Columbia milkvetch
  Castilleja miniata Douglas ex Hook. – accepted – great red Indian paintbrush, great red Indian-paintbrush, scarlet Indian paintbrush, scarlet paintbrush, giant red Indian paintbrush
  Castilleja miniata ssp. miniata Douglas ex Hook. – accepted – giant red Indian paintbrush
  Castilleja miniata var. miniata Douglas ex Hook. – not accepted – green Indian paintbrush
  Ceanothus velutinus Douglas ex Hook. – accepted – snowbush, snowbrush ceanothus
  Ceanothus velutinus ssp. velutinus Douglas ex Hook. – not accepted – tobacco brush
  Ceanothus velutinus var. velutinus Douglas ex Hook. – accepted – snowbrush ceanothus
  Cerasus emarginata Douglas ex Hook. – not accepted
  Clarkia rhomboidea Douglas ex Hook. – accepted – diamond clarkia, diamond fairyfan, broadleaf clarkia
  Claytonia linearis Douglas ex Hook. – not accepted
  Claytonia parviflora Douglas ex Hook. – accepted – streambank springbeauty, littleleaf springbeauty
  Claytonia parviflora ssp. parviflora Douglas ex Hook. – accepted – streambank springbeauty
  Collomia heterophylla Douglas ex Hook. – accepted – variableleaf collomia
  Epipactis gigantea Douglas ex Hook. – accepted – Heleborina gigante, giant helleborine, stream orchid
  Horkelia congesta Douglas ex Hook. – accepted – Sierra horkelia
  Horkelia congesta ssp. congesta Douglas ex Hook. – not accepted – Sierra horkelia
  Horkelia congesta var. congesta Douglas ex Hook. – accepted – Sierra horkelia
  Lupinus minimus Douglas ex Hook. – accepted – Kettle Falls lupine
  Lupinus sabinei Douglas ex Hook. – not accepted
  Lupinus sabinii Douglas ex Hook. – not accepted
  Lupinus sulphureus Douglas ex Hook. – accepted – sulphur lupine
  Malva rivularis Douglas ex Hook. – not accepted
  Oxytropis splendens Douglas ex Hook. – accepted – showy locoweed, showy crazyweed, showy pointvetch
  Paeonia brownii Douglas ex Hook. – accepted – Brown's peony
  Penstemon ovatus Douglas ex Hook. – accepted – eggleaf beardtongue
  Petalostemon ornatus Douglas ex Hook. – not accepted
  Potentilla bipinnatifida Douglas ex Hook. – accepted – tansy cinquefoil
  Potentilla bipinnatifida var. bipinnatifida Douglas ex Hook. – not accepted – tansy cinquefoil
  Potentilla gracilis Douglas ex Hook. – accepted – graceful cinquefoil, northwest cinquefoil, slender cinquefoil
  Potentilla gracilis var. gracilis Douglas ex Hook. – accepted – graceful cinquefoil
  Psoralea physodes Douglas ex Hook. – not accepted
  Quercus garryana Douglas ex Hook. – accepted – Oregon white oak
  Quercus garryana var. garryana Douglas ex Hook. – accepted – Oregon white oak
  Ribes bracteosum Douglas ex Hook. – accepted – stink currant
  Rubus macropetalus Douglas ex Hook. – not accepted
  Rubus nivalis Douglas ex Hook. – accepted – snow raspberry
  Sanicula bipinnatifida Douglas ex Hook. – accepted – purple sanicle
  Trifolium spinulosum Douglas ex Hook. – not accepted
  Viola sarmentosa Douglas ex Hook. – not accepted
  Castanopsis chrysophylla (Douglas ex Hook.) A. DC. – not accepted – giant chinkapin
  Gilia pungens var. hookeri (Douglas ex Hook.) A. Gray – not accepted
  Erysimum asperum var. capitatum (Douglas ex Hook.) B. Boivin – not accepted
  Prunus pensylvanica var. mollis (Douglas ex Hook.) B. Boivin – not accepted
  Potentilla congesta (Douglas ex Hook.) Baill. – not accepted
  Astragalus purshii var. glareosus (Douglas ex Hook.) Barneby – accepted – woollypod milkvetch, gravel milkvetch
  Synthyris rubra (Douglas ex Hook.) Benth. – accepted – red kittentails
  Mentzelia laevicaulis var. parviflora (Douglas ex Hook.) C.L. Hitchc. – accepted – smoothstem blazingstar
  Astragalus pectinatus (Douglas ex Hook.) Douglas ex G. Don – accepted – narrowleaf milkvetch
  Mentzelia albicaulis (Douglas ex Hook.) Douglas ex Torr. & A. Gray – accepted – white-stemmed evening-star, whitestem blazingstar, whitestem stickleaf, white blazingstar
  Dalea ornata (Douglas ex Hook.) Eaton & Wright – accepted – Blue Mountain prairie clover, showy prairieclover
  Aragallus splendens (Douglas ex Hook.) Greene – not accepted
  Cardiobatus nivalis (Douglas ex Hook.) Greene – not accepted
  Erysimum capitatum (Douglas ex Hook.) Greene – accepted – western wallflower, coast wallflower, sand dune wallflower
  Erysimum capitatum var. capitatum (Douglas ex Hook.) Greene – accepted – western wallflower, plains wallflower, prairie rocket, sand dune wallflower
  Iliamna rivularis (Douglas ex Hook.) Greene – accepted – streambank globe-mallow, streambank wild hollyhock
  Iliamna rivularis var. rivularis (Douglas ex Hook.) Greene – not accepted – Peter's mountain mallow, streambank wild hollyhock
  Montia linearis (Douglas ex Hook.) Greene – accepted – narrowleaf minerslettuce, narrowleaf Indianlettuce
  Chrysolepis chrysophylla (Douglas ex Hook.) Hjelmq. – accepted – giant chinquapin
  Chrysolepis chrysophylla var. chrysophylla (Douglas ex Hook.) Hjelmq. – accepted – giant chinquapin
  Montia parviflora (Douglas ex Hook.) Howell – not accepted
  Rupertia physodes (Douglas ex Hook.) J.W. Grimes – accepted – forest scurfpea
  Leptodactylon pungens var. hookeri (Douglas ex Hook.) Jeps. – not accepted
  Montia perfoliata var. parviflora (Douglas ex Hook.) Jeps. – not accepted
  Sida leprosa var. hederacea (Douglas ex Hook.) K. Schum. – not accepted
  Lupinus sericeus ssp. sabinei (Douglas ex Hook.) L.Ll. Phillips – not accepted
  Lupinus sericeus ssp. sabinii (Douglas ex Hook.) L.Ll. Phillips – not accepted
  Eremogone franklinii (Douglas ex Hook.) R.L. Hartm. & Rabeler – accepted – Franklin's sandwort
  Eremogone franklinii var. franklinii (Douglas ex Hook.) R.L. Hartm. & Rabeler – accepted – Franklin's sandwort
  Rubus ursinus ssp. macropetalus (Douglas ex Hook.) Roy L. Taylor & MacBryde – not accepted – California blackberry
  Besseya rubra (Douglas ex Hook.) Rydb. – not accepted – red besseya, red kittentail
  Cnemidophacos pectinatus (Douglas ex Hook.) Rydb. – not accepted
  Montiastrum lineare (Douglas ex Hook.) Rydb. – not accepted
  Phymosia rivularis (Douglas ex Hook.) Rydb. – not accepted
  Pisophaca flexuosa (Douglas ex Hook.) Rydb. – not accepted
  Tium drummondii (Douglas ex Hook.) Rydb. – not accepted
  Rubus ursinus var. macropetalus (Douglas ex Hook.) S.W. Br. – not accepted
  Astragalus splendens (Douglas ex Hook.) Tidestr. – not accepted
  Claytonia perfoliata var. parviflora (Douglas ex Hook.) Torr. – not accepted
  Sphaeralcea rivularis (Douglas ex Hook.) Torr. – not accepted
  Potentilla pensylvanica var. bipinnatifida (Douglas ex Hook.) Torr. & A. Gray – not accepted
  Sida hederacea (Douglas ex Hook.) Torr. ex A. Gray – not accepted – alkali mallow, alkali sida, dollar weed
  Prunus emarginata var. mollis (Douglas ex Hook.) W.H. Brewer – not accepted – bitter cherry
  Leptodactylon pungens ssp. hookeri (Douglas ex Hook.) Wherry – not accepted
  Hibiscus schizopetalus (Dyer) Hook. f. – accepted – fringed rosemallow, fringed hibiscus
  Deyeuxia sesquiflora (E. Desv.) Benth. & Hook. f. ex W.D. Jacks. – not accepted
  Gouinia E. Fourn. ex Benth. & Hook. f. – accepted
  Relbunium (Endl.) Benth. & Hook. f. – not accepted
  Gilia squarrosa (Eschsch.) Hook. & Arn. – not accepted
  Navarretia squarrosa (Eschsch.) Hook. & Arn. – accepted – skunkbush
  Arenaria michauxii (Fenzl) Hook. f. – not accepted
  Sisymbrium sophioides Fisch. ex Hook. – not accepted
  Trientalis arctica Fisch. ex Hook. – not accepted
  Trientalis europaea ssp. arctica (Fisch. ex Hook.) Hultén – not accepted – arctic starflower
  Trientalis europaea var. arctica (Fisch. ex Hook.) Ledeb. – not accepted
  Descurainia sophioides (Fisch. ex Hook.) O.E. Schulz – accepted – northern tansymustard
  Paspalum sanguinale var. pruriens (Fisch. ex Trin.) Hook. f. – not accepted
  Glyceria distans ssp. conferta (Fr.) Hook. f. – not accepted
  Stanhopea Frost ex Hook. – accepted
  Araucaria columnaris (G. Forst.) Hook. – accepted – New Caledonia pine
  Poa caespitosa (G. Forst.) Hook. ex Speg. – not accepted
  Hedyotis longifolia (Gaertn.) Hook. – not accepted
  Alloplectus eriocalyx Galeotti ex Hook. – not accepted
  Gloxinia sarmentiana Gardner ex Hook. – not accepted
  Sphaerorrhiza sarmentiana (Gardner ex Hook.) Roalson & Boggan – accepted
  Euphorbia multiformis Gaudich. ex Hook. & Arn. – accepted – variable sandmat
  Euphorbia multiformis var. multiformis Gaudich. ex Hook. & Arn. – accepted – variable sandmat
  Hibiscus youngianus Gaudich. ex Hook. & Arn. – not accepted
  Chamaesyce multiformis (Gaudich. ex Hook. & Arn.) Croizat & O. Deg. – not accepted – variable sandmat
  Chamaesyce multiformis var. multiformis (Gaudich. ex Hook. & Arn.) Croizat & O. Deg. – not accepted – variable sandmat
  Hibiscus furcellatus var. youngianus (Gaudich. ex Hook. & Arn.) Hochr. – accepted – lindenleaf rosemallow
  Anisophyllum multiforme (Gaudich. ex Hook. & Arn.) Klotzsch & Garcke – not accepted
  Aster vahlii (Gaudich.) Hook. & Arn. – not accepted
  Pilea peploides (Gaudich.) Hook. & Arn. – accepted – Pacific Island clearweed
  Delphinium distichum Geyer ex Hook. – accepted – twospike larkspur
  Orobanche pinorum Geyer ex Hook. – accepted – conifer broomrape
  Peucedanum farinosum Geyer ex Hook. – not accepted
  Aphyllon pinorum (Geyer ex Hook.) A. Gray – not accepted
  Phelipaea pinorum (Geyer ex Hook.) A. Gray – not accepted
  Lomatium farinosum (Geyer ex Hook.) J.M. Coult. & Rose – accepted – northern biscuitroot
  Lomatium farinosum var. farinosum (Geyer ex Hook.) J.M. Coult. & Rose – accepted – northern biscuitroot
  Tauschia tenuissima (Geyer ex Hook.) Mathias & Constance – accepted – Leiberg's umbrellawort
  Myzorrhiza pinorum (Geyer ex Hook.) Rydb. – not accepted
  Verbena venosa Gillies & Hook. – not accepted
  Salpichroa rhomboidea (Gillies & Hook.) Miers – not accepted
  Perizoma rhomboidea (Gillies & Hook.) Small – not accepted
  Aloysia gratissima (Gillies & Hook.) Tronc. – accepted – whitebrush
  Aloysia gratissima var. gratissima (Gillies & Hook.) Tronc. – accepted – whitebrush
  Gourliea decorticans Gillies ex Hook. & Arn. – not accepted
  Myriophyllum proserpinacoides Gillies ex Hook. & Arn. – not accepted
  Prosopis humilis Gillies ex Hook. & Arn. – accepted – mesquite
  Prosopis sericantha Gillies ex Hook. & Arn. – accepted – mesquite
  Ranunculus trisepalus Gillies ex Hook. & Arn. – not accepted
  Rhynchosia senna Gillies ex Hook. & Arn. – accepted – Texas snoutbean, Texas snout-bean
  Menodora decemfida (Gillies ex Hook. & Arn.) A. Gray – accepted – tenfinger menodora
  Sida sulphurea (Gillies ex Hook. & Arn.) A. Gray – not accepted
  Geoffroea decorticans (Gillies ex Hook. & Arn.) Burkart – accepted – chańar
  Malvastrum sulphureum (Gillies ex Hook. & Arn.) Griseb. – not accepted
  Ranunculus bonariensis var. trisepalus (Gillies ex Hook. & Arn.) Lourteig – accepted – Carter's buttercup
  Abutilon pictum (Gillies ex Hook. & Arn.) Walp. – accepted – painted Indian mallow
  Lonicera oblongifolia (Goldie) Hook. – accepted – swamp fly honeysuckle
  Lonicera oblongifolia var. oblongifolia (Goldie) Hook. – not accepted – swamp fly honeysuckle
  Nicotiana acuminata (Graham) Hook. – accepted – manyflower tobacco
  Nicotiana acuminata var. acuminata (Graham) Hook. – accepted – manyflower tobacco
  Aster tomentellus (Greene) Frye & Rigg non Hook. – not accepted
  Senecio websteri Greenm. non Hook. f. – not accepted
  Sarothra drummondii Grev. & Hook. – not accepted
  Hypericum drummondii (Grev. & Hook.) Torr. & A. Gray – accepted – Drummond's St. Johnswort, nits and lice
  Cheilosandra leptopus Griff. ex Benth. & Hook. f. – not accepted
  Dillenia suffruticosa (Griffith ex Hook. f. & Thomson) Martelli – accepted – shrubby dillenia
  Napeanthus subacaulis (Griseb.) Benth. & Hook. f. ex Kuntze – accepted
  Napeanthus subacaulis var. subacaulis (Griseb.) Benth. & Hook. f. ex Kuntze – accepted
  Zeltnera texensis (Griseb. ex Hook.) G. Mans. – not accepted
  Napeanthus primulinus (H. Karst.) Benth. & Hook. f. ex Jacks. – accepted
  Ptychosperma macarthurii (H. Wendl. ex H.J. Veitch) H. Wendl. ex Hook f. – accepted
  Myosotis azorica H.C. Watson ex Hook. – accepted – Azores forget-me-not
  Chloris tetrastachys Hack. ex Hook. f. – not accepted
  Sinningia maximiliana (Hanst.) Benth. & Hook. ex Fritsch – accepted
  Wardia Harv. & Hook. – accepted
  Wardia hygrometrica Harv. & Hook. – accepted
  Berginia virgata Harv. ex Benth. & Hook. f. – not accepted
  Holographis virgata (Harv. ex Benth. & Hook. f.) T.F. Daniel – accepted – white devilbush
  Ceropegia bowkeri ssp. sororia (Harvey ex Hook. f.) R.A. Dyer – not accepted
  Anomodon viticulosus (Hedw.) Hook. & Taylor – accepted
  Phascum cuspidatum var. piliferum (Hedw.) Hook. & Taylor – not accepted
  Cyrtopus setosus (Hedw.) Hook. f. – accepted
  Grimmia pulvinata var. africana (Hedw.) Hook. f. & Wilson – not accepted – African dry rock moss
  Aeschynanthus hildebrandii Hemsl. ex Hook. f. – not accepted
  Paspalum ternatum (Hochst. ex A. Rich.) Hook. f. – not accepted
  Solms-laubachia platycarpa (Hook f. & Thomson) Botsch. – accepted
  Paraschistochila pinnatifolia (Hook) R.M. Schust. – not accepted
  Acer douglasii Hook. – not accepted
  Achillea multiflora Hook. – not accepted
  Achimenes argyrostigma Hook. – not accepted
  Achimenes cupreata Hook. – not accepted
  Achimenes ocellata Hook. – not accepted
  Acroclinium roseum Hook. – not accepted
  Adenocaulon Hook. – accepted – trailplant
  Adenocaulon bicolor Hook. – accepted – American trailplant
  Adiantum wilsonii Hook. – accepted – Wilson's maidenhair
  Aeschynanthus cordifolius Hook. – accepted
  Aeschynanthus lobbianus Hook. – not accepted
  Aeschynanthus speciosus Hook. – accepted
  Aeschynanthus tricolor Hook. – accepted
  Agave maculosa Hook. – not accepted
  Agrimonia eupatoria var. parviflora Hook. – not accepted
  Agrostis exarata var. minor Hook. – not accepted – minor spike bentgrass
  Aira elongata Hook. – not accepted
  Aira latifolia Hook. – not accepted
  Allamanda neriifolia Hook. – not accepted
  Allium acuminatum Hook. – accepted – taper-tip onion, tapertip onion
  Allium douglasii Hook. – accepted – Douglas' onion
  Alloplectus capitatus Hook. – not accepted
  Alloplectus concolor Hook. – not accepted
  Alloplectus repens Hook. – not accepted
  Alsophila salvinii Hook. – not accepted
  Ambrosia acanthicarpa Hook. – accepted – flatspine bur ragweed, flatspine burr ragweed, bursage, bursage ragweed, flat-spine burr-ragweed, annual bursage, sand bursage
  Amelanchier ovalis var. semiintegrifolia Hook. – not accepted
  Amygdalus glandulosa Hook. – not accepted
  Andreaea nivalis Hook. – accepted
  Andromeda phillyreifolia Hook. – not accepted
  Anemone deltoidea Hook. – accepted – Columbian windflower
  Anemone richardsonii Hook. – accepted – yellow thimbleweed
  Angelonia gardneri Hook. – accepted
  Anigozanthos pulcherrimus Hook. – accepted
  Antennaria carpathica var. lanata Hook. – not accepted
  Antennaria carpathica var. pulcherrima Hook. – not accepted
  Antennaria carpatica var. humilis Hook. – not accepted
  Antennaria carpatica var. lanata Hook. – not accepted
  Antennaria carpatica var. pulcherrima Hook. – not accepted
  Antennaria racemosa Hook. – accepted – raceme pussytoes
  Aquilegia brevistyla Hook. – accepted – smallflower columbine
  Aquilegia caerulea var. ochroleuca Hook. – not accepted – white Colorado columbine
  Aquilegia canadensis var. hybrida Hook. – not accepted
  Aquilegia coerulea var. ochroleuca Hook. – accepted – white Colorado columbine
  Aralia papyrifera Hook. – not accepted – rice-paper plant, Chinese rice-paper plant
  Araucaria bidwillii Hook. – accepted – bunya bunya
  Arenaria macrophylla Hook. – not accepted
  Arenaria peploides var. major Hook. – not accepted
  Arnica cordifolia Hook. – accepted – heartleaf arnica, heart-leaf leopardbane
  Arnica mollis Hook. – accepted – hairy arnica, wooly arnica
  Artemisia borealis var. purshii Hook. – not accepted
  Asplenium dalhousiae Hook. – accepted – Countess Dalhousie's spleenwort
  Aster patens var. gracilis Hook. – not accepted – late purple aster
  Aster unalaschkensis var. major Hook. – not accepted
  Astragalus adsurgens var. robustior Hook. – not accepted – prairie milkvetch
  Astragalus hypoglottis Hook. – not accepted
  Astragalus lotiflorus Hook. – accepted – lotus milkvetch, lotus milk-vetch, milkvetch, low milkvetch
  Atriplex gordonii Hook. – not accepted
  Begonia coccinea Hook. – accepted – scarlet begonia
  Berberis darwinii Hook. – accepted – Darwin's berberis
  Betula occidentalis Hook. – accepted – water birch
  Blechnum occidentale var. minor Hook. – accepted – hammock fern
  Blepharipappus Hook. – accepted – blepharipappus
  Blepharipappus scaber Hook. – accepted – rough eyelashweed, blepharipappus
  Blepharipappus scaber ssp. scaber Hook. – not accepted – rough eyelashweed
  Bowringia Hook. – not accepted
  Braya arctica Hook. – not accepted
  Braya pilosa Hook. – accepted – hairy braya
  Bromus purgans var. longispicatus Hook. – not accepted
  Bromus purgans var. pallidus Hook. – not accepted
  Bromus purgans var. purpurascens Hook. – not accepted
  Bromus purgans var. vulgaris Hook. – not accepted
  Bryum andicola Hook. – not accepted
  Bryum cellulare Hook. – not accepted
  Bryum demissum Hook. – not accepted
  Bryum nitens Hook. – not accepted
  Bryum pellucens Hook. – not accepted
  Calamagrostis longifolia Hook. – not accepted
  Calanthera Hook. – not accepted
  Cardamine angulata Hook. – accepted – seaside bittercress
  Cardamine pratensis var. angustifolia Hook. – not accepted – cuckoo flower
  Carex membranacea Hook. – accepted – fragile sedge
  Centrosolenia bractescens Hook. – not accepted
  Centrosolenia picta Hook. – not accepted
  Ceratochloa breviaristata Hook. – not accepted
  Ceratochloa grandiflora Hook. – not accepted
  Cereus lamairei Hook. – not accepted
  Cereus lemairei Hook. – not accepted
  Ceropegia attenuata Hook. – accepted
  Ceropegia oculata var. subhirsuta Hook. – not accepted
  Ceropegia thwaitesii Hook. – accepted
  Ceropegia vincaefolia Hook. – not accepted
  Ceropegia vincifolia Hook. – accepted
  Chaerophyllum tainturieri Hook. – accepted – chervil, hairy-fruit chervil, hairyfruit chervil
  Chaerophyllum tainturieri var. tainturieri Hook. – accepted – hairyfruit chervil
  Cheilanthes fendleri Hook. – accepted – Fendler's lipfern
  Cheilanthes lindheimeri Hook. – accepted – fairyswords, fairy swords, Lindheimer's lipfern
  Cheilanthes wrightii Hook. – accepted – Wright's lip fern, Wright's lipfern
  Chenopodium humile Hook. – not accepted – marshland goosefoot
  Chirita zeylanica Hook. – accepted
  Cibotium menziesii Hook. – accepted – hapu'u li
  Cicuta maculata var. angustifolia Hook. – accepted – common water hemlock, poison parsnip, spotted cowbane, spotted parsley, water hemlock, spotted water-hemlock, spotted water hemlock
  Cleome lutea Hook. – not accepted – yellow beeplant, yellow spiderflower
  Cleome lutea var. lutea Hook. – not accepted – yellow spiderflower
  Clivia gardenii Hook. – accepted
  Coldenia nuttallii Hook. – not accepted
  Colpodium pauciflorum Hook. – not accepted
  Columnea aureonitens Hook. – not accepted
  Commelina deficiens Hook. – not accepted
  Condalia obovata Hook. – not accepted
  Conradia calycosa Hook. – not accepted
  Coreopsis longipes Hook. – not accepted
  Corispermum hyssopifolium var. rubricaule Hook. – not accepted
  Correa backhouseana Hook. – accepted
  Correa backhousiana Hook. – not accepted – Backhous fuchsia
  Corydalis scouleri Hook. – accepted – Scouler's fumewort
  Crepis elegans Hook. – accepted – elegant hawksbeard
  Crocidium Hook. – accepted – spring-gold
  Crocidium multicaule Hook. – accepted – common spring-gold
  Crotalaria crassipes Hook. – not accepted
  Croton setiger Hook. – accepted – turkey mullein, dove weed
  Croton setigerus Hook. – not accepted – dove weed
  Cyathea aneitensis Hook. – accepted
  Cyathea assimilis Hook. – accepted
  Cyathea camerooniana Hook. – accepted
  Cyathea camerooniana var. camerooniana Hook. – accepted
  Cyathea gardneri Hook. – accepted
  Cyathea imrayana Hook. – accepted
  Cyathea imrayana var. imrayana Hook. – accepted
  Cyathea imrayana var. subnudata Hook. – not accepted
  Cyathea integra var. petiolata (Hook.) – not accepted
  Cyathea kirkii Hook. – accepted
  Cyathea lindsayana Hook. – accepted
  Cyathea manniana Hook. – accepted
  Cyathea milnei Hook. – accepted
  Cyathea multiflora var. hostmannii (Hook.) – not accepted
  Cyathea sprucei Hook. – not accepted
  Cyathea walkerae Hook. – accepted
  Cyathea walkerae var. tripinnata Hook. – accepted
  Cyathea walkerae var. walkerae Hook. – accepted
  Cyathea welwitschii Hook. – accepted
  Cyrtodeira cupreata var. viridifolia Hook. – not accepted
  Cystopteris douglasii Hook. – accepted – Douglas' bladderfern
  Davallia fejeensis Hook. – accepted – lacy hare's-foot fern
  Delphinium cardinale Hook. – accepted – scarlet larkspur
  Diastema ochroleucum Hook. – not accepted
  Dicksonia sellowiana Hook. – accepted
  Dicranum fulvum Hook. – accepted
  Didymocarpus rexii Hook. – not accepted
  Diplopappus pinnatifidus Hook. – not accepted
  Dodecatheon dentatum Hook. – not accepted – white shootingstar
  Dodecatheon dentatum ssp. dentatum Hook. – not accepted – white shootingstar
  Douglasia arctica Hook. – not accepted – Mackenzie River dwarf-primrose
  Draba alpina var. nana Hook. – not accepted
  Draba micropetala Hook. – accepted
  Draba oligosperma Hook. – accepted – glacier draba, fewseed draba
  Draba oligosperma var. oligosperma Hook. – not accepted
  Drummondia Hook. – accepted
  Echinocactus cinnabarinus Hook. – not accepted
  Echinocactus pentlandii Hook. – not accepted
  Elymus virginicus var. submuticus Hook. – not accepted – Virginia wildrye
  Encephalartos horridus var. trispinosus Hook. – not accepted
  Encyclia Hook. – accepted – butterfly orchid
  Epidendrum bicornutum Hook. – not accepted
  Epidendrum pallidiflorum Hook. – accepted – Caribbean star orchid
  Epidendrum parkinsonianum Hook. – accepted
  Epidendrum pygmaeum Hook. – not accepted
  Epidendrum viridipurpureum Hook. – accepted
  Episcia bicolor Hook. – not accepted
  Erigeron alpinus var. elatus Hook. – not accepted
  Erigeron compositus var. typicus Hook. – not accepted
  Erigeron glabellus var. pubescens Hook. – accepted – streamside fleabane, fleabane
  Erigeron grandiflorus Hook. – accepted – largeflower fleabane, onestem fleabane
  Erigeron grandiflorus ssp. grandiflorus Hook. – not accepted – largeflower fleabane
  Erigeron lanatus Hook. – accepted – woolly fleabane, hairy daisy
  Erigeron lonchophyllus Hook. – accepted – shortray fleabane, low-meadow fleabane, vergerette ŕ feuilles fines, short-ray boreal-daisy, shortray boreal daisy, spearleaf daisy
  Erigeron radiatus Hook. – not accepted
  Erigeron radicatus Hook. – accepted – taproot fleabane, Huber's fleabane, tap-root fleabane
  Erigeron trifidus Hook. – accepted – Alberta fleabane
  Eriogonum compositum var. leianthum Hook. – accepted – arrowleaf buckwheat
  Eriogonum divaricatum Hook. – accepted – divergent buckwheat, divergent wild buckwheat
  Eriogonum microthecum var. laxiflorum Hook. – accepted – slender buckwheat
  Eriogonum pyrolifolium Hook. – accepted – Shasta buckwheat
  Eriogonum pyrolifolium var. pyrolifolium Hook. – accepted – Shasta buckwheat
  Eriogonum umbellatum var. majus Hook. – accepted – sulphur-flower buckwheat
  Eriogynia Hook. – not accepted
  Eryngium articulatum Hook. – accepted – beethistle
  Eryngium petiolatum Hook. – accepted – rushleaf eryngo
  Eucalyptus citriodora Hook. – not accepted – lemonscented gum
  Eucalyptus macrocarpa Hook. – accepted – mottlecah
  Eucalyptus maculata Hook. – accepted – spotted gum, eucalyptus
  Eucalyptus platypus Hook. – accepted
  Eucalyptus spathulata Hook. – accepted – eucalyptus
  Eucalyptus spathulata ssp. spathulata Hook. – accepted – eucalyptus
  Eupatorium occidentale Hook. – not accepted
  Euphorbia alata Hook. – accepted
  Euphorbia jacquiniiflora Hook. – not accepted
  Euphorbia monteiroi Hook. – accepted
  Euphorbia monteiroi ssp. monteiroi Hook. – accepted
  Fadyenia Hook. – accepted – dotted fern
  Festuca fuegiana var. vivipara Hook. – not accepted
  Festuca nervosa Hook. – not accepted
  Festuca occidentalis Hook. – accepted – western fescue
  Festuca occidentalis var. occidentalis Hook. – not accepted
  Festuca ovina ssp. rubra Hook. – not accepted
  Festuca richardsonii Hook. – not accepted – Richardson's fescue
  Fragaria chiloensis var. scouleri Hook. – not accepted
  Galium aparine var. minor Hook. – not accepted
  Garrya fadyenia Hook. – not accepted – Fadyen's silktassel
  Garrya fadyenii Hook. – accepted
  Gayophytum ramosissimum var. strictipes Hook. – not accepted
  Geranium cuneatum Hook. – accepted – hinahina
  Geranium cuneatum ssp. cuneatum Hook. – accepted – hinahina
  Geranium cuneatum var. cuneatum Hook. – not accepted – hinahina
  Gesneria bulbosa var. lateritia Hook. – not accepted
  Gesneria cochlearis Hook. – not accepted
  Gesneria elliptica Hook. – not accepted
  Gesneria elliptica var. lutea Hook. – not accepted
  Gesneria gardneri Hook. – not accepted
  Gesneria lindleyi Hook. – not accepted
  Gesneria pardina Hook. – not accepted
  Gesneria picta Hook. – not accepted
  Gesneria picta var. minus-hirsuta Hook. – not accepted
  Gesneria seemannii Hook. – not accepted
  Gesneria triflora Hook. – not accepted
  Gesneria verticillata Hook. – not accepted
  Gilia congesta Hook. – not accepted
  Gilia gracilis Hook. – not accepted
  Gleichenia owhyensis Hook. – not accepted
  Gleichenia owhyhensis Hook. – not accepted
  Gloxinia pallidiflora Hook. – not accepted
  Gloxinia speciosa var. albiflora Hook. – not accepted
  Gloxinia speciosa var. macrophylla Hook. – not accepted
  Gloxinia speciosa var. menziesii Hook. – not accepted
  Gloxinia tubiflora Hook. – not accepted
  Glyceria arctica Hook. – not accepted
  Gossypianthus Hook. – accepted – cottonflower
  Gossypianthus rigidiflorus Hook. – not accepted
  Gossypianthus tenuiflorus Hook. – not accepted
  Grimmia longirostris Hook. – accepted
  Grimmia spiralis Hook. – not accepted
  Grimmia unicolor Hook. – accepted – onecolor dry rock moss
  Grindelia grandiflora Hook. – accepted – manyray gumweed
  Gymnostomum involutum Hook. – not accepted
  Gymnostomum latifolium Hook. – not accepted
  Gymnostomum phascoides Hook. – not accepted
  Habenaria alata Hook. – accepted – Habenaria alada, winged bog orchid
  Hedwigia hornschuchiana Hook. – not accepted
  Hedwigia secunda Hook. – not accepted
  Helianthus quinquenervis Hook. – not accepted
  Hemitelia hostmanii Hook. – not accepted
  Hemitelia wilsonii Hook. – not accepted
  Hieracium albiflorum Hook. – accepted – white hawkweed, whiteflower hawkweed
  Hieracium gracile Hook. – not accepted – slender hawkweed
  Hieracium gracile var. gracile Hook. – not accepted – slender hawkweed
  Hieracium scouleri Hook. – accepted – Scouler's woollyweed, houndstongue hawkweed, woolyweed
  Hieracium scouleri var. scouleri Hook. – not accepted – Scouler's woollyweed
  Hookeria leskeoides Hook. – not accepted
  Hookeria radiculosa Hook. – not accepted
  Horkelia gordonii Hook. – not accepted
  Hymenopappus filifolius Hook. – accepted – fineleaf hymenopappus, cutleaf, fine-leaf woollywhite
  Hymenopappus filifolius var. filifolius Hook. – accepted – fineleaf hymenopappus
  Hymenophyllum protrusum Hook. – accepted
  Hymenoxys linearifolia Hook. – not accepted
  Hypericum ellipticum Hook. – accepted – pale St. Johnswort
  Hypericum scouleri Hook. – accepted – Scouler's St. Johnswort
  Hypericum scouleri ssp. scouleri Hook. – not accepted – Scouler's St. Johnswort
  Hypnum affine Hook. – not accepted
  Hypnum circinale Hook. – not accepted
  Hypnum crispifolium Hook. – not accepted
  Hypnum neckeroides Hook. – not accepted
  Hypnum robustum Hook. – not accepted
  Hypnum serpens var. compactum Hook. – not accepted
  Hypnum stoloniferum Hook. – not accepted
  Hypocyrta glabra Hook. – not accepted
  Hypocyrta gracilis Hook. – not accepted
  Hypocyrta leucostoma Hook. – not accepted
  Hypolepis nigrescens Hook. – accepted – black beadfern
  Ipomoea horsfalliae Hook. – accepted – Lady Doorly's morningglory, Lady Doorly's morning-glory
  Iresine grandiflora Hook. – not accepted
  Iresine herbstii Hook. – accepted – Herbst's bloodleaf
  Isonandra gutta Hook. – not accepted
  Iva axillaris var. robustior Hook. – not accepted
  Jatropha podagrica Hook. – accepted – goutystalk nettlespurge
  Juncus effusus var. gracilis Hook. – not accepted – lamp rush
  Juncus ensifolius var. major Hook. – not accepted
  Jungermannia albescens Hook. – not accepted
  Jungermannia blasia Hook. – not accepted
  Jungermannia clavigera Hook. – not accepted
  Jungermannia cordifolia Hook. – not accepted
  Jungermannia epiphylla var. furcigera Hook. – not accepted
  Jungermannia epiphylla var. longifolia Hook. – not accepted
  Jungermannia furcata var. elongata Hook. – not accepted
  Jungermannia hibernica Hook. – not accepted
  Jungermannia lyellii Hook. – not accepted
  Jungermannia orcadensis Hook. – not accepted
  Jungermannia pinguis var. angustior Hook. – not accepted
  Jungermannia pinnatifolia Hook. – not accepted
  Jungermannia sphaerocarpa Hook. – not accepted
  Jungermannia woodsii Hook. – not accepted
  Juniperus occidentalis Hook. – accepted – western juniper
  Juniperus occidentalis var. occidentalis Hook. – accepted – western juniper
  Klugia notoniana Hook. – not accepted
  Lathyrus ochroleucus Hook. – accepted – cream pea, cream peavine, pale vetchling peavine
  Lepanthes sanguinea Hook. – accepted – Jamaican babyboot orchid
  Lepidium latipes Hook. – accepted – San Diego pepperweed
  Lepidium latipes var. latipes Hook. – not accepted – San Diego pepperweed
  Lepidium smithii Hook. – not accepted
  Leuchtenbergia Hook. – accepted
  Leuchtenbergia principis Hook. – accepted
  Liatris punctata Hook. – accepted – dotted blazing star, dotted gayfeather
  Liatris punctata var. punctata Hook. – accepted – dotted blazing star, dotted gayfeather, densespike blazing star
  Lilium canadense var. parviflorum Hook. – not accepted
  Lindsaea walkerae Hook. – accepted
  Linum berlandieri Hook. – accepted – Berlandier's yellow flax
  Linum berlandieri var. berlandieri Hook. – accepted – Berlandier's yellow flax
  Loeflingia texana Hook. – not accepted
  Lophopyxis Hook. – accepted
  Lotus pinnatus Hook. – not accepted – meadow bird's-foot trefoil
  Luculia pinceana Hook. – accepted
  Lunania Hook. – accepted
  Lupinus nootkatensis var. glaber Hook. – not accepted
  Lupinus subcarnosus Hook. – accepted – Texas bluebonnet
  Lupinus texensis Hook. – accepted – Texas lupine, Texas bluebonnet
  Lysimachia radicans Hook. – accepted – trailing yellow loosestrife
  Madia glomerata Hook. – accepted – mountain tarweed, mountain tarplant, cluster tarweed
  Manihot grahamii Hook. – accepted – Graham's manihot
  Marsdenia maculata Hook. – not accepted
  Melocactus depressus Hook. – not accepted
  Menziesia glanduliflora Hook. – not accepted
  Merostachys capitata Hook. – not accepted
  Merostachys capitata var. capitata Hook. – not accepted
  Mimulus scouleri Hook. – not accepted
  Mitella pentandra Hook. – accepted – fivestamen miterwort
  Monoclea Hook. – accepted
  Monoclea crispata Hook. – not accepted
  Monoclea forsteri Hook. – accepted
  Myosotidium Hook. – accepted – giant forget-me-not
  Neckera abietina Hook. – not accepted
  Neckera douglasii Hook. – accepted – Douglas' neckera moss
  Niphaea albo-lineata Hook. – not accepted
  Notholaena sinuata var. integerrima Hook. – not accepted
  Nymphaea elegans Hook. – accepted – tropical royalblue waterlily
  Oenothera bistorta var. veitchiana Hook. – not accepted
  Oenothera drummondii Hook. – accepted – beach evening-primrose, beach eveningprimrose, beach evening primrose
  Oenothera drummondii ssp. drummondii Hook. – accepted – beach evening primrose
  Oenothera fruticosa var. vera Hook. – not accepted
  Ophioglossum petiolatum Hook. – accepted – stalked adder's-tongue, longstem adder's-tongue, longstem adderstongue
  Oplotheca gracilis Hook. – not accepted
  Orthotrichum rugifolium Hook. – not accepted
  Oxalis trilliifolia Hook. – accepted – threeleaf woodsorrel
  Oxytropis campestris var. glabrata Hook. – not accepted
  Oxytropis campestris var. melanocephala Hook. – not accepted
  Oxytropis campestris var. spicata Hook. – accepted – field locoweed
  Oxytropis foliolosa Hook. – not accepted
  Oxytropis splendens var. richardsonii Hook. – not accepted
  Oxytropis splendens var. vestita Hook. – not accepted
  Oxytropis uralensis var. subsucculenta Hook. – not accepted
  Pellaea bridgesii Hook. – accepted – Bridges' cliffbrake
  Pellaea longimucronata Hook. – not accepted
  Pellaea wrightiana Hook. – accepted – Wright's cliffbrake
  Penstemon baccharifolius Hook. – accepted – baccharisleaf beardtongue
  Penstemon cyananthus Hook. – accepted – Wasatch beardtongue
  Penstemon cyananthus var. cyananthus Hook. – accepted – Wasatch beardtongue
  Penstemon gairdneri Hook. – accepted – Gairdner's beardtongue
  Penstemon gairdneri var. gairdneri Hook. – accepted – Gairdner's beardtongue
  Penstemon menziesii Hook. – not accepted
  Penstemon murrayanus Hook. – accepted – scarlet beardtongue
  Penstemon tolmiei Hook. – not accepted
  Penstemon wrightii Hook. – accepted – Wright's beardtongue
  Phaca frigida var. americana Hook. – not accepted
  Phacelia congesta Hook. – accepted – blue curls, spike phacelia, caterpillars
  Phlox douglasii Hook. – not accepted
  Phlox douglasii var. douglasii Hook. – not accepted
  Phlox drummondii Hook. – accepted – Drummond's phlox, annual phlox
  Phlox drummondii ssp. drummondii Hook. – accepted – Drummond's phlox, annual phlox
  Phlox richardsonii Hook. – accepted – Richardson's phlox
  Phlox richardsonii ssp. richardsonii Hook. – accepted – Richardson's phlox
  Phyllospadix Hook. – accepted – surfgrass
  Phyllospadix scouleri Hook. – accepted – Scouler's surfgrass
  Physalis grandiflora Hook. – not accepted
  Picradenia richardsonii Hook. – not accepted
  Pimelea physodes Hook. – accepted
  Pinus lasiocarpa Hook. – not accepted
  Platanthera dilatata var. angustifolia Hook. – not accepted
  Pleuropogon sabinei var. elatior Hook. – not accepted
  Pleuropogon sabinei var. humilior Hook. – not accepted
  Pleurothallis aristata Hook. – accepted – forest bonnet orchid
  Poa arctica var. vivipara Hook. – not accepted
  Poa pratensis var. stricta Hook. – not accepted
  Pohlia flexuosa Hook. – accepted
  Polemonium pulcherrimum Hook. – accepted – skunkleaf polemonium, pretty Jacob's-ladder
  Polemonium pulcherrimum ssp. pulcherrimum Hook. – accepted – pretty Jacob's-ladder
  Polemonium pulcherrimum var. pulcherrimum Hook. – not accepted
  Polypodium vulgare var. occidentale Hook. – not accepted
  Polystachya Hook. – accepted – yellowspike orchid
  Portulaca grandiflora Hook. – accepted – mossrose, rose moss
  Pteris cretica var. albolineata Hook. – accepted – Cretan brake
  Pyrola bracteata Hook. – not accepted
  Pyrrocoma Hook. – accepted – goldenweed
  Pyrrocoma carthamoides Hook. – accepted – largeflower goldenweed
  Pyrrocoma carthamoides var. carthamoides Hook. – accepted – largeflower goldenweed
  Ranunculus cardiophyllus Hook. – accepted – heart-leaf buttercup, heartleaf buttercup
  Ranunculus cymbalaria var. alpinus Hook. – not accepted
  Ranunculus glaberrimus Hook. – accepted – sagebrush buttercup
  Ranunculus glaberrimus var. glaberrimus Hook. – accepted – sagebrush buttercup
  Ranunculus orthorhynchus Hook. – accepted – straightbeak buttercup
  Ranunculus orthorhynchus var. orthorhynchus Hook. – accepted – straightbeak buttercup
  Rhododendron albiflorum Hook. – accepted – white rhododendron, Cascade azalea
  Rhododendron albiflorum var. albiflorum Hook. – not accepted – Cascade azalea
  Rhododendron californicum Hook. – not accepted
  Rhynchoglossum zeylanicum Hook. – not accepted
  Rhytidophyllum auriculatum Hook. – accepted – tibey-amarillo
  Ruellia ciliatiflora Hook. – accepted – hairyflower wild petunia
  Rytidophyllum auriculatum Hook. – not accepted – tibey amarillo
  Sabatia macrophylla Hook. – accepted – largeleaf rose gentian
  Sabatia macrophylla var. macrophylla Hook. – accepted – largeleaf rose gentian
  Salix adenophylla Hook. – not accepted
  Salix barrattiana Hook. – accepted – Barratt's willow
  Salix cordata var. balsamifera Hook. – not accepted
  Salix cordata var. mackenzieana Hook. – not accepted
  Salix nivalis Hook. – accepted – snow willow
  Salix richardsonii Hook. – accepted – Richardson's willow
  Salix vestita var. nana Hook. – not accepted
  Salix villosa var. acutifolia Hook. – not accepted
  Sanguisorba canadensis var. latifolia Hook. – not accepted
  Saxifraga integrifolia Hook. – not accepted – wholeleaf saxifrage
  Saxifraga reflexa Hook. – not accepted – reflexed saxifrage
  Saxifraga reflexa var. reflexa Hook. – not accepted
  Saxifraga richardsonii Hook. – not accepted
  Schiedea menziesii Hook. – accepted – Menzies' schiedea
  Schiedea nuttallii Hook. – accepted – valley schiedea
  Scorzonella nutans Hook. – not accepted
  Scouleria Hook. – accepted – splashzone moss
  Scouleria aquatica Hook. – accepted – blackmat splashzone moss
  Sedum douglasii Hook. – not accepted
  Sedum spathulifolium Hook. – accepted – broadleaf stonecrop
  Sedum spathulifolium ssp. spathulifolium Hook. – not accepted – broadleaf stonecrop
  Sedum spathulifolium var. spathulifolium Hook. – accepted – broadleaf stonecrop
  Senecio ampullaceus Hook. – accepted – Texas ragwort
  Senecio canus Hook. – not accepted – woolly groundsel
  Senecio serra Hook. – accepted – tall ragwort, butterweed groundsel, butterweed
  Senecio serra var. serra Hook. – accepted – tall ragwort, tall groundsel
  Senecio triangularis Hook. – accepted – arrowleaf ragwort, arrowleaf groundsel
  Silene douglasii Hook. – accepted – seabluff catchfly, Douglas' campion, Douglas' catchfly
  Silene douglasii var. douglasii Hook. – accepted – Douglas' catchfly, seabluff catchfly, Douglas' campion
  Silene drummondii Hook. – accepted – Drummond's cockle, Drummond's catchfly, Drummond's campion
  Silene drummondii ssp. drummondii Hook. – accepted – Drummond's campion
  Silene drummondii var. drummondii Hook. – not accepted – Drummond's catchfly, Drummond's campion
  Silene menziesii Hook. – accepted – white catchfly, Menzies' campion
  Silene menziesii ssp. menziesii Hook. – not accepted – Menzies' catchfly, Menzies' campion
  Silene menziesii ssp. menziesii var. menziesii Hook. – not accepted
  Silene menziesii var. menziesii Hook. – not accepted – Menzies' campion
  Silene scouleri Hook. – accepted – Scouler's catchfly, Scouler's campion, simple campion
  Silene scouleri ssp. scouleri Hook. – accepted – simple campion
  Silene scouleri ssp. scouleri var. scouleri Hook. – not accepted – simple campion
  Silene scouleri var. scouleri Hook. – not accepted – simple campion
  Silphium asperimum Hook. – not accepted
  Silphium asperrimum Hook. – not accepted
  Sisymbrium curvisiliqua Hook. – not accepted
  Sisyrinchium chilense Hook. – not accepted – swordleaf blue-eyed grass
  Smilax lasioneura Hook. – accepted – Blue Ridge carrion-flower, Blue Ridge carrionflower
  Smilax lasioneuron Hook. – not accepted
  Solanum amblophyllum Hook. – accepted
  Solanum tweedianum Hook. – accepted
  Solidago boothii Hook. – not accepted
  Solidago boottii Hook. – not accepted
  Spiraea douglasii Hook. – accepted – rose spirea
  Spiraea douglasii var. douglasii Hook. – accepted – rose spirea
  Spiraea menziesii Hook. – not accepted
  Streptanthus glandulosus Hook. – accepted – bristly jewelflower
  Streptanthus glandulosus ssp. glandulosus Hook. – accepted – bristly jewelflower
  Streptanthus hyacinthoides Hook. – accepted – smooth twistflower, smooth jewelflower
  Streptanthus obtusifolius Hook. – not accepted
  Streptocarpus gardenii Hook. – accepted
  Streptocarpus polyanthus Hook. – accepted
  Streptocarpus polyanthus ssp. polyanthus Hook. – accepted
  Streptocarpus saundersii Hook. – accepted
  Symphoricarpos occidentalis Hook. – accepted – wolfberry, western snowberry
  Synthyris reniformis var. major Hook. – not accepted
  Tayloria Hook. – accepted – tayloria dung moss
  Telfairia Hook. – accepted
  Thysanocarpus Hook. – accepted – lacepod, fringepod
  Thysanocarpus curvipes Hook. – accepted – lacepod mustard, sand lacepod, sand fringepod
  Thysanocarpus curvipes ssp. curvipes Hook. – accepted
  Thysanocarpus pusillus Hook. – not accepted
  Tiarella laciniata Hook. – not accepted
  Tiarella unifoliata Hook. – not accepted
  Tillandsia aloifolia Hook. – not accepted
  Tillandsia bulbosa Hook. – accepted – Tillandsia base bulbosa, bulbous airplant
  Tillandsia pulchella Hook. – not accepted
  Tortula bryoides Hook. – not accepted
  Tortula indica Hook. – not accepted
  Tortula suberecta Hook. – not accepted
  Townsendia Hook. – not accepted
  Townsendia Hook. – accepted – Townsend daisy, townsendia
  Townsendia sericea Hook. – not accepted
  Trichantha major Hook. – not accepted
  Trichantha minor Hook. – not accepted
  Trientalis latifolia Hook. – accepted – broadleaf starflower, western starflower
  Trifolium longipes var. latifolium Hook. – not accepted
  Trifolium obtusiflorum Hook. – accepted – clammy clover
  Triticum repens var. dasystachyum Hook. – not accepted
  Triticum repens var. subvillosum Hook. – not accepted
  Tropidocarpum Hook. – accepted
  Tropidocarpum gracile Hook. – accepted – dobie pod
  Troximon aurantiacum Hook. – not accepted
  Turritis mollis Hook. – not accepted
  Uvularia smithii Hook. – not accepted
  Vanda tricolor Hook. – not accepted
  Verbena incisa Hook. – not accepted
  Vesicaria gracilis Hook. – not accepted
  Viburnum ellipticum Hook. – accepted – common viburnum
  Vicia americana var. minor Hook. – not accepted – mat vetch
  Vicia gigantea Hook. – not accepted
  Vilfa tenacissima var. fuscicolor Hook. – not accepted
  Viola nuttallii var. major Hook. – not accepted
  Voyria tenella Hook. – accepted – Puerto Rico ghostplant
  Weissia macrocarpa Hook. – not accepted
  Wyethia scabra Hook. – not accepted – badlands mule-ears, badlands mulesears, badlands wyethia
  Wyethia scabra var. scabra Hook. – not accepted – badlands mule-ears, badlands mulesears
  Adenostoma Hook. & Arn. – accepted – chamise
  Adenostoma fasciculatum Hook. & Arn. – accepted – chamise
  Adenostoma fasciculatum var. fasciculatum Hook. & Arn. – accepted – common chamise, chamise
  Adesmia angustifolia Hook. & Arn. – not accepted
  Adesmia microphylla Hook. & Arn. – accepted – pahuen, palhuen, varilla
  Adesmia tenella Hook. & Arn. – accepted
  Allium falcifolium Hook. & Arn. – accepted – scytheleaf onion
  Amblyopappus Hook. & Arn. – accepted – amblyopappus
  Amblyopappus pusillus Hook. & Arn. – accepted – dwarf coastweed
  Amsinckia vernicosa Hook. & Arn. – accepted – green fiddleneck
  Amsinckia vernicosa var. vernicosa Hook. & Arn. – accepted – green fiddleneck
  Andropogon tahitensis Hook. & Arn. – not accepted
  Anemopsis Hook. & Arn. – accepted – yerba mansa
  Anoda lanceolata Hook. & Arn. – accepted – lanceleaf anoda
  Antigonon leptopus Hook. & Arn. – accepted – confederate vine, Mexican coral vine, Mexican creeper, queen's wreath, queen's jewels, coral vine
  Arabis blepharophylla Hook. & Arn. – accepted – rose rockcress, coast rockcress
  Asclepias vestita Hook. & Arn. – accepted – woolly milkweed
  Asclepias vestita ssp. vestita Hook. & Arn. – accepted – woolly milkweed
  Asplenium acuminatum Hook. & Arn. – accepted – tapertip spleenwort
  Aster filaginifolius Hook. & Arn. – not accepted
  Astragalus didymocarpus Hook. & Arn. – accepted – dwarf white milkvetch
  Astragalus didymocarpus var. didymocarpus Hook. & Arn. – accepted – dwarf white milkvetch
  Boehmeria densiflora Hook. & Arn. – accepted
  Bromus carinatus Hook. & Arn. – accepted – California brome, mountain brome
  Bromus carinatus var. carinatus Hook. & Arn. – accepted
  Calochortus tolmiei Hook. & Arn. – accepted – Tolmie star-tulip
  Calochortus uniflorus Hook. & Arn. – accepted – Monterey mariposa lily
  Calotheca stricta Hook. & Arn. – not accepted
  Calotheca stricta var. stricta Hook. & Arn. – not accepted
  Calycanthus occidentalis Hook. & Arn. – accepted – California-allspice, California spicebush, western sweetshrub
  Calystegia subacaulis Hook. & Arn. – accepted – hillside false bindweed
  Calystegia subacaulis ssp. subacaulis Hook. & Arn. – accepted – hillside false bindweed
  Canavalia pubescens Hook. & Arn. – accepted – lavafield jackbean, awikiwiki
  Carex gmelinii Hook. & Arn. – accepted – Gmelin's sedge
  Cassia gaudichaudii Hook. & Arn. – not accepted
  Castilleja affinis Hook. & Arn. – accepted – coast Indian paintbrush
  Castilleja affinis Hook. & Arn. – not accepted
  Castilleja affinis ssp. affinis Hook. & Arn. – accepted – coast Indian paintbrush
  Castilleja ambigua Hook. & Arn. – accepted – johnny-nip
  Castilleja ambigua ssp. ambigua Hook. & Arn. – accepted – johnny-nip
  Castilleja foliolosa Hook. & Arn. – accepted – Texas Indian paintbrush
  Castilleja latifolia Hook. & Arn. – accepted – Monterey Indian paintbrush
  Castilleja latifolia Hook. & Arn. – not accepted
  Caucalis microcarpa Hook. & Arn. – not accepted
  Ceanothus integerrimus Hook. & Arn. – accepted – deerbrush, deerbrush ceanothus
  Ceanothus sorediatus Hook. & Arn. – accepted – jimbrush
  Chaenactis stevioides Hook. & Arn. – accepted – Esteve's pincushion, Steve's dustymaiden, Steve's dusty maiden, Steve's pincushion
  Crataegus opaca Hook. & Arn. – accepted – riverflat hawthorn, western mayhaw, apple haw
  Crotalaria longirostrata Hook. & Arn. – accepted – longbeak rattlebox
  Croton polystachyus Hook. & Arn. – not accepted
  Cuscuta californica Hook. & Arn. – accepted – California dodder, chaparral dodder
  Cuscuta californica var. californica Hook. & Arn. – accepted – chaparral dodder, California dodder
  Cynoglossum penicillatum Hook. & Arn. – not accepted
  Cyperus trachysanthos Hook. & Arn. – accepted – Pu`uka`a, sticky flatsedge
  Cyrtandra biflora Hook. & Arn. – not accepted
  Cyrtandra menziesii Hook. & Arn. – accepted – ha`iwale
  Cyrtandra triflora Hook. & Arn. – not accepted
  Desmodium cuneatum Hook. & Arn. – accepted
  Dianella sandwicensis Hook. & Arn. – accepted – `uki`uki
  Distasis concinna Hook. & Arn. – not accepted
  Dubautia laxa Hook. & Arn. – accepted – na`ena`e pua melemele
  Dubautia laxa ssp. laxa Hook. & Arn. – accepted – na`ena`e pua melemele
  Dupontia fisheri var. flavescens Hook. & Arn. – not accepted
  Elaeocarpus bifidus Hook. & Arn. – accepted – kalia
  Erigeron velutipes Hook. & Arn. – accepted – Chihuahuan fleabane
  Erodium macrophyllum Hook. & Arn. – accepted – roundleaf stork's bill
  Erodium macrophyllum var. macrophyllum Hook. & Arn. – accepted – roundleaf stork's bill
  Eryngium divaricatum Hook. & Arn. – accepted – ballast eryngo
  Escallonia macrantha Hook. & Arn. – not accepted
  Euphorbia bifida Hook. & Arn. – accepted
  Euphorbia clusiifolia Hook. & Arn. – accepted – forest sandmat
  Euphorbia lathyris var. minor Hook. & Arn. – not accepted
  Euphorbia myrtifolia Hook. & Arn. – not accepted
  Euphorbia ramosissima Hook. & Arn. – not accepted
  Euphorbia rotundifolia Hook. & Arn. – not accepted
  Euphorbia strigosa Hook. & Arn. – accepted
  Euphorbia vachellii Hook. & Arn. – not accepted
  Exacum inflatum Hook. & Arn. – not accepted
  Ferula macrocarpa Hook. & Arn. – not accepted
  Fraxinus dipetala Hook. & Arn. – accepted – two-petal ash, California ash
  Galium californicum Hook. & Arn. – accepted – California bedstraw
  Galium californicum ssp. californicum Hook. & Arn. – accepted – California bedstraw
  Gaura decorticans Hook. & Arn. – not accepted
  Gayophytum micranthum Hook. & Arn. – accepted
  Gesneria stricta Hook. & Arn. – not accepted
  Gnaphalium alienum Hook. & Arn. – not accepted
  Grayia Hook. & Arn. – accepted – hopsage
  Grindelia hirsutula Hook. & Arn. – accepted – hairy gumweed, sharpleaf gumweed, bract gumweed
  Grindelia hirsutula ssp. hirsutula Hook. & Arn. – not accepted – hairy gumweed
  Grindelia hirsutula var. hirsutula Hook. & Arn. – not accepted – hairy gumweed
  Grindelia humilis Hook. & Arn. – not accepted
  Haplopappus squarrosus Hook. & Arn. – not accepted
  Haplopappus squarrosus var. squarrosus Hook. & Arn. – not accepted
  Heliotropium anomalium Hook. & Arn. – not accepted
  Heliotropium anomalum Hook. & Arn. – accepted – Polynesian heliotrope
  Heliotropium anomalum var. anomalum Hook. & Arn. – accepted – Polynesian heliotrope
  Hemizonia multicaulis Hook. & Arn. – not accepted
  Hemizonia multicaulis var. multicaulis Hook. & Arn. – not accepted
  Heterocentron Hook. & Arn. – accepted
  Hosackia tomentosa Hook. & Arn. – not accepted
  Hymenophyllum lanceolatum Hook. & Arn. – accepted – palaihinahina
  Hymenophyllum obtusum Hook. & Arn. – accepted – palailaulii
  Hypochaeris tweediei Hook. & Arn. – not accepted
  Hypochaeris tweedyi Hook. & Arn. – not accepted
  Hypocyrta villosa Hook. & Arn. – not accepted
  Ilex anomala Hook. & Arn. – accepted – Hawai'i holly
  Isopyrum occidentale Hook. & Arn. – not accepted
  Kadua centranthoides Hook. & Arn. – accepted
  Lathyrus pubescens Hook. & Arn. – accepted
  Leptodactylon Hook. & Arn. – accepted – prickly gilia, prickly phlox
  Leptodactylon californicum Hook. & Arn. – accepted – California prickly phlox
  Leptodactylon californicum ssp. californicum Hook. & Arn. – accepted – California prickly phlox
  Lonicera subspicata Hook. & Arn. – accepted – southern honeysuckle
  Lonicera subspicata var. subspicata Hook. & Arn. – accepted – southern honeysuckle
  Lycopodium phyllanthum Hook. & Arn. – not accepted
  Malva malachroides Hook. & Arn. – not accepted
  Metrosideros macropus Hook. & Arn. – accepted – 'ohi'a
  Mimulus nanus Hook. & Arn. – accepted – dwarf purple monkeyflower
  Mimulus nanus ssp. nanus Hook. & Arn. – accepted – dwarf purple monkeyflower
  Mimulus nanus var. subuniflorus Hook. & Arn. – not accepted
  Neckera californica Hook. & Arn. – not accepted
  Nemophila menziesii Hook. & Arn. – accepted – baby blue-eyes, baby blue eyes
  Nemophila menziesii var. menziesii Hook. & Arn. – accepted – baby blue eyes
  Oenothera alyssoides Hook. & Arn. – not accepted
  Oenothera graciliflora Hook. & Arn. – not accepted
  Orthocarpus tolmiei Hook. & Arn. – accepted – Tolmie's owl's-clover
  Orthocarpus tolmiei ssp. tolmiei Hook. & Arn. – accepted – Tolmie's owl's-clover
  Osmorhiza chilensis Hook. & Arn. – not accepted
  Oxalis laxa Hook. & Arn. – not accepted
  Panicum beecheyi Hook. & Arn. – accepted – rock panicgrass
  Panicum tenuifolium Hook. & Arn. – accepted – parkland panicgrass
  Penstemon laricifolius Hook. & Arn. – accepted – larchleaf beardtongue
  Penstemon laricifolius ssp. laricifolius Hook. & Arn. – not accepted – larchleaf beardtongue
  Penstemon laricifolius var. laricifolius Hook. & Arn. – accepted – larchleaf beardtongue
  Peperomia leptostachya Hook. & Arn. – not accepted – aridland peperomia
  Peperomia membranacea Hook. & Arn. – accepted – woodland peperomia
  Peperomia tetraphylla Hook. & Arn. – accepted – acorn peperomia
  Phalaris californica Hook. & Arn. – accepted – California canarygrass
  Phyllanthus distichus Hook. & Arn. – accepted – pamakani mahu
  Pittosporum glabrum Hook. & Arn. – accepted – Koolau Range cheesewood
  Psoralea strobilina Hook. & Arn. – not accepted
  Quercus douglasii Hook. & Arn. – accepted – blue oak
  Ranunculus hebecarpus Hook. & Arn. – accepted – downy-fruit buttercup, delicate buttercup
  Rhynchospora sclerioides Hook. & Arn. – accepted – Hawai'i beaksedge
  Ribes californicum Hook. & Arn. – accepted – hillside gooseberry
  Ribes californicum var. californicum Hook. & Arn. – accepted – hillside gooseberry
  Ribes subvestitum Hook. & Arn. – not accepted
  Sadleria pallida Hook. & Arn. – accepted – ama'u
  Salix speciosa Hook. & Arn. – not accepted
  Sanicula arctopoides Hook. & Arn. – accepted – footsteps of spring
  Sanicula bipinnata Hook. & Arn. – accepted – poison sanicle
  Sanicula laciniata Hook. & Arn. – accepted – coastal blacksnakeroot
  Santalum paniculatum Hook. & Arn. – accepted – mountain sandalwood
  Santalum paniculatum var. paniculatum Hook. & Arn. – accepted – mountain sandalwood
  Sapindus drummondii Hook. & Arn. – not accepted
  Scaevola gaudichaudi Hook. & Arn. – not accepted – mountain naupaka
  Scaevola gaudichaudii Hook. & Arn. – accepted – ridgetop naupaka
  Scaevola glabra Hook. & Arn. – accepted – 'ohe naupaka
  Scaevola mollis Hook. & Arn. – accepted – purple naupaka
  Schkuhria multiflora Hook. & Arn. – accepted – manyflower false threadleaf, many-flower false threadleaf
  Schkuhria multiflora var. multiflora Hook. & Arn. – not accepted
  Senecio cannabinifolius Hook. & Arn. – accepted – hempleaf ragwort
  Sesbania tomentosa Hook. & Arn. – accepted – Oahu riverhemp, `ohai
  Sicyos pachycarpus Hook. & Arn. – accepted – paha
  Sida grossulariifolia Hook. & Arn. – not accepted
  Solanum refractum Hook. & Arn. – accepted
  Solanum sandwicense Hook. & Arn. – accepted – `aiakeakua, popolo, Hawai'i horsenettle
  Spilanthes pusilla Hook. & Arn. – not accepted
  Spodiopogon aureus Hook. & Arn. – not accepted
  Tetradymia spinosa Hook. & Arn. – accepted – shortspine horsebrush, spiny horsebrush
  Tetranthera californica Hook. & Arn. – not accepted
  Thermopsis macrophylla Hook. & Arn. – accepted – Santa Inez goldenbanner
  Thermopsis macrophylla var. macrophylla Hook. & Arn. – not accepted – golden pea, false-lupine, California goldenbanner
  Tillaea erecta Hook. & Arn. – not accepted
  Trifolium chilense Hook. & Arn. – accepted – Chilean clover
  Trifolium dichotomum Hook. & Arn. – accepted – branched Indian clover
  Trifolium macraei Hook. & Arn. – accepted – Chilean clover
  Trifolium melananthum Hook. & Arn. – not accepted
  Trifolium microdon Hook. & Arn. – accepted – thimble clover
  Trillium sessile var. giganteum Hook. & Arn. – not accepted
  Urtica grandis Hook. & Arn. – not accepted
  Vicia nigricans Hook. & Arn. – accepted – black vetch
  Vicia nigricans ssp. nigricans Hook. & Arn. – not accepted – black vetch
  Vicia nigricans var. nigricans Hook. & Arn. – accepted – black vetch
  Xanthium ambrosioides Hook. & Arn. – not accepted – cocklebur
  Eremothera boothii ssp. decorticans (Hook. & Arn.) W.L. Wagner & Hoch – accepted – shredding suncup
  Crassula erecta (Hook. & Arn.) A. Berger – not accepted
  Miltitzia lutea (Hook. & Arn.) A. DC. – not accepted
  Pectocarya penicillata (Hook. & Arn.) A. DC. – accepted – shortleaf combseed, winged combseed, sleeping combseed
  Astragalus macrodon (Hook. & Arn.) A. Gray – accepted – Salinas milkvetch
  Carum gairdneri (Hook. & Arn.) A. Gray – not accepted
  Chaenactis douglasii var. achilleifolia (Hook. & Arn.) A. Gray – not accepted
  Malvastrum grossulariifolium (Hook. & Arn.) A. Gray – not accepted
  Pelea sandwicensis (Hook. & Arn.) A. Gray – not accepted
  Pipturus albidus (Hook. & Arn.) A. Gray – accepted – Waimea pipturus
  Sidalcea malachroides (Hook. & Arn.) A. Gray – accepted – mapleleaf checkerbloom, maple-leaved checkerbloom
  Boehmeria grandis (Hook. & Arn.) A. Heller – accepted – Hawai'i false nettle
  Trillium giganteum (Hook. & Arn.) A. Heller – not accepted
  Cryptantha muricata (Hook. & Arn.) A. Nelson & J.F. Macbr. – accepted – pointed catseye, prickly cryptantha, pointed cryptantha
  Cryptantha muricata var. muricata (Hook. & Arn.) A. Nelson & J.F. Macbr. – not accepted – pointed cryptantha
  Schizymenium campylocarpum (Hook. & Arn.) A.J. Shaw – accepted
  Hosackia tomentosa ssp. glabriuscula (Hook. & Arn.) Abrams – not accepted
  California macrophylla (Hook. & Arn.) Aldasoro, C. Navarro, P. Vargas, L. Sáez & Aedo – not accepted
  Polygala cruciata var. cuspidata (Hook. & Arn.) Alph. Wood – not accepted
  Chamaesyce clusiifolia (Hook. & Arn.) Arthur – not accepted – forest sandmat
  Poinsettia strigosa (Hook. & Arn.) Arthur – not accepted
  Pleurozia conchifolia (Hook. & Arn.) Austin – accepted
  Pleurozia conchifolia var. conchifolia (Hook. & Arn.) Austin – accepted
  Hypochaeris brasiliensis var. tweediei (Hook. & Arn.) Baker – not accepted
  Hypochaeris brasiliensis var. tweedyi (Hook. & Arn.) Baker – not accepted – Tweedy's catsear
  Nama aretioides (Hook. & Arn.) Brand – accepted – purple nama, ground nama
  Nama aretioides var. aretioides (Hook. & Arn.) Brand – accepted – ground nama
  Dryopteris crinalis (Hook. & Arn.) C. Chr. – accepted – serpent woodfern
  Dryopteris crinalis var. crinalis (Hook. & Arn.) C. Chr. – accepted
  Dryopteris sandwicensis (Hook. & Arn.) C. Chr. – accepted – Pacific woodfern
  Dryopteris unidentata (Hook. & Arn.) C. Chr. – accepted – onetooth woodfern
  Dryopteris unidentata var. unidentata (Hook. & Arn.) C. Chr. – accepted
  Ceanothus oliganthus ssp. sorediatus (Hook. & Arn.) C.L. Schmidt – not accepted
  Ctenitis squamigera (Hook. & Arn.) Copel. – accepted – Pauoa, Pacific lacefern
  Sphaerocionium lanceolatum (Hook. & Arn.) Copel. – not accepted
  Grossularia californica (Hook. & Arn.) Coville & Britton – not accepted
  Camissonia boothii var. decorticans (Hook. & Arn.) Cronquist – not accepted
  Layia gaillardioides (Hook. & Arn.) DC. – accepted – woodland tidytips
  Lipochaeta succulenta (Hook. & Arn.) DC. – accepted – seaside nehe
  Corytholoma strictum (Hook. & Arn.) Decne. – not accepted
  Erigeron pumilus var. concinnus (Hook. & Arn.) Dorn – not accepted
  Chascolytrum strictum (Hook. & Arn.) E. Desv. – not accepted
  Trillium sessile ssp. giganteum (Hook. & Arn.) E. Murray – not accepted
  Eubrachion ambiguum (Hook. & Arn.) Engl. – accepted – tapeworm-plant
  Layia Hook. & Arn. ex DC. – accepted – tidytips
  Acer drummondii Hook. & Arn. ex Nutt. – not accepted
  Acer rubrum ssp. drummondii (Hook. & Arn. ex Nutt.) E. Murray – not accepted
  Acer rubrum var. drummondii (Hook. & Arn. ex Nutt.) Sarg. – accepted – Drummond's maple
  Rufacer drummondii (Hook. & Arn. ex Nutt.) Small – not accepted
  Isolepis carinata Hook. & Arn. ex Torr. – accepted – keeled bulrush
  Scirpus carinatus (Hook. & Arn. ex Torr.) A. Gray, non Sm. – not accepted
  Polypodium vulgare var. intermedium (Hook. & Arn.) Fernald – not accepted
  Gouldia terminalis var. coriacea (Hook. & Arn.) Fosberg – not accepted
  Isocoma menziesii (Hook. & Arn.) G.L. Nesom – accepted – Menzies' goldenbush
  Isocoma menziesii var. menziesii (Hook. & Arn.) G.L. Nesom – accepted – Menzies' goldenbush
  Ludwigia grandiflora ssp. hexapetala (Hook. & Arn.) G.L. Nesom & Kartesz – not accepted
  Allocarya scouleri (Hook. & Arn.) Greene – not accepted
  Centromadia pungens (Hook. & Arn.) Greene – accepted – pungent false tarplant
  Centromadia pungens ssp. pungens (Hook. & Arn.) Greene – accepted – common tarweed
  Convolvulus subacaulis (Hook. & Arn.) Greene – not accepted
  Eunanus subuniflorus (Hook. & Arn.) Greene – not accepted
  Guillenia lasiophylla (Hook. & Arn.) Greene – not accepted – coast wild cabbage, hairyleaf wildcabbage, California mustard
  Gymnosteris nudicaulis (Hook. & Arn.) Greene – accepted – nakedstem gymnosteris
  Hazardia squarrosa (Hook. & Arn.) Greene – accepted – sawtooth goldenbush
  Hazardia squarrosa var. squarrosa (Hook. & Arn.) Greene – accepted – sawtooth goldenbush
  Hesperalcea malachroides (Hook. & Arn.) Greene – not accepted
  Holozonia filipes (Hook. & Arn.) Greene – accepted – whitecrown
  Oenothera decorticans (Hook. & Arn.) Greene – not accepted
  Rubus parviflorus var. velutinus (Hook. & Arn.) Greene – not accepted – thimbleberry
  Thelypodium lasiophyllum (Hook. & Arn.) Greene – not accepted
  Trifolium variegatum var. melananthum (Hook. & Arn.) Greene – not accepted
  Chamaesyce vachellii (Hook. & Arn.) H. Hara – not accepted
  Senna gaudichaudii (Hook. & Arn.) H.S. Irwin & Barneby – accepted – Gaudichaud's senna
  Ischaemum aureum (Hook. & Arn.) Hack. – accepted – golden duckbeakgrass
  Urostachys phyllanthus (Hook. & Arn.) Herter – not accepted
  Gouldia terminalis (Hook. & Arn.) Hillebr. – not accepted
  Panicum nephelophilum var. tenuifolium (Hook. & Arn.) Hillebr. – not accepted
  Huperzia phyllantha (Hook. & Arn.) Holub – accepted – daggerleaf clubmoss
  Eunanus nanus (Hook. & Arn.) Holz. – not accepted
  Lithophragma heterophyllum (Hook. & Arn.) Hook. & Arn. – accepted – hillside woodland-star
  Ceanothus oliganthus var. sorediatus (Hook. & Arn.) Hoover – not accepted – jim-brush
  Cryptantha circumscissa (Hook. & Arn.) I.M. Johnst. – accepted – cushion catseye, matted cryptantha, cushion cryptantha
  Cryptantha circumscissa var. circumscissa (Hook. & Arn.) I.M. Johnst. – accepted – cushion catseye, cushion cryptantha
  Plagiobothrys fulvus (Hook. & Arn.) I.M. Johnst. – accepted – fulvous popcornflower
  Plagiobothrys fulvus var. fulvus (Hook. & Arn.) I.M. Johnst. – accepted – fulvous popcornflower
  Plagiobothrys scouleri (Hook. & Arn.) I.M. Johnst. – accepted – meadow popcornflower, Scouler's popcornflower
  Plagiobothrys scouleri var. scouleri (Hook. & Arn.) I.M. Johnst. – not accepted – Scouler's popcornflower
  Trifolium albopurpureum var. dichotomum (Hook. & Arn.) Isely – not accepted
  Lomatium caruifolium (Hook. & Arn.) J.M. Coult. & Rose – accepted – alkali desertparsley
  Lomatium caruifolium var. caruifolium (Hook. & Arn.) J.M. Coult. & Rose – accepted – alkali desertparsley
  Linanthus californicus (Hook. & Arn.) J.M. Porter & L.A. Johnson – not accepted
  Enemion occidentale (Hook. & Arn.) J.R. Drumm. & Hutch. – accepted – western false rue anemone
  Phacelia lutea (Hook. & Arn.) J.T. Howell – accepted – yellow phacelia
  Phacelia lutea var. lutea (Hook. & Arn.) J.T. Howell – accepted – yellow phacelia
  Godetia parviflora (Hook. & Arn.) Jeps. – not accepted
  Lomatium parvifolium (Hook. & Arn.) Jeps. – accepted – coastal biscuitroot
  Mimulus subuniflorus (Hook. & Arn.) Jeps. – not accepted
  Zigadenus fremontii var. minor (Hook. & Arn.) Jeps. – not accepted
  Yabea microcarpa (Hook. & Arn.) Koso-Pol. – accepted – false hedge-parsley, falsecarrot, false carrot
  Columnea villosa (Hook. & Arn.) Kuntze – not accepted
  Rechsteineria stricta (Hook. & Arn.) Kuntze – not accepted
  Sapindus saponaria var. drummondii (Hook. & Arn.) L.D. Benson – accepted – western soapberry
  Morrenia odorata (Hook. & Arn.) Lindl. – accepted – latexplant
  Lessingia filaginifolia (Hook. & Arn.) M.A. Lane – not accepted
  Lessingia filaginifolia var. filaginifolia (Hook. & Arn.) M.A. Lane – not accepted
  Pectocarya linearis var. penicillata (Hook. & Arn.) M.E. Jones – not accepted
  Perideridia gairdneri (Hook. & Arn.) Mathias – accepted – common yampah, Indian caraway, Gardner's yampah
  Perideridia gairdneri ssp. gairdneri (Hook. & Arn.) Mathias – accepted – Gairdner's yampah
  Lindsaea repens var. macraeana (Hook. & Arn.) Mett. ex Kuhn – accepted – creeping necklace fern
  Ectropothecium sandwichense (Hook. & Arn.) Mitt. – accepted
  Logfia filaginoides (Hook. & Arn.) Morefield – accepted – California cottonrose
  Oenothera boothii ssp. alyssoides (Hook. & Arn.) Munz – not accepted
  Oenothera boothii ssp. decorticans (Hook. & Arn.) Munz – not accepted
  Trillium chloropetalum var. giganteum (Hook. & Arn.) Munz – accepted – giant wakerobin
  Camissonia boothii var. alyssoides (Hook. & Arn.) N.H. Holmgren & P.K. Holmgren – not accepted
  Corethrogyne filaginifolia (Hook. & Arn.) Nutt. – accepted – common sandaster, California sandaster, whiteleaf sandaster
  Corethrogyne filaginifolia var. filaginifolia (Hook. & Arn.) Nutt. – not accepted – common sandaster
  Umbellularia californica (Hook. & Arn.) Nutt. – accepted – California laurel
  Umbellularia californica var. californica (Hook. & Arn.) Nutt. – accepted – California laurel
  Camissonia boothii ssp. alyssoides (Hook. & Arn.) P.H. Raven – not accepted – alyssum evening primrose, alyssum evening-primrose, alyssum eveningprimrose
  Camissonia boothii ssp. decorticans (Hook. & Arn.) P.H. Raven – not accepted – shredding suncup
  Camissonia graciliflora (Hook. & Arn.) P.H. Raven – not accepted – hill suncup
  Caulanthus lasiophyllus (Hook. & Arn.) Payson – accepted – California mustard
  Caulanthus lasiophyllus var. lasiophyllus (Hook. & Arn.) Payson – not accepted – coast range wild cabbage
  Asarina stricta (Hook. & Arn.) Pennell – not accepted
  Mimulus subuniflorus (Hook. & Arn.) Piper – not accepted
  Acmella pusilla (Hook. & Arn.) R.K. Jansen – accepted – dwarf spotflower
  Lithocarpus densiflorus (Hook. & Arn.) Rehder – accepted – tanoak
  Lithocarpus densiflorus var. densiflorus (Hook. & Arn.) Rehder – accepted – tanoak
  Escallonia rubra var. macrantha (Hook. & Arn.) Reiche – accepted – redclaws
  Neogaerrhinum strictum (Hook. & Arn.) Rothm. – accepted – Kellogg's snapdragon
  Rubus parviflorus ssp. velutinus (Hook. & Arn.) Roy L. Taylor & MacBryde – not accepted
  Greeneocharis circumscissa (Hook. & Arn.) Rydb. – not accepted
  Hoita strobilina (Hook. & Arn.) Rydb. – accepted – Loma prieta
  Sphaeralcea grossulariifolia (Hook. & Arn.) Rydb. – accepted – gooseberryleaf globemallow, currant-leaf globemallow, gooseberry-leaf globemallow
  Sphaeralcea grossulariifolia ssp. grossulariifolia (Hook. & Arn.) Rydb. – not accepted – gooseberryleaf globemallow
  Ehrendorferia chrysantha (Hook. & Arn.) Rylander – not accepted – golden eardrops
  Cheirodendron platyphyllum (Hook. & Arn.) Seem. – accepted – lapalapa
  Cheirodendron platyphyllum ssp. platyphyllum (Hook. & Arn.) Seem. – accepted – lapalapa
  Lipochaeta lobata var. hastulata (Hook. & Arn.) Sherff – not accepted
  Briza stricta (Hook. & Arn.) Steud. – not accepted
  Briza stricta var. stricta (Hook. & Arn.) Steud. – not accepted
  Hedyotis centranthoides (Hook. & Arn.) Steud. – not accepted – forest starviolet
  Corculum leptopum (Hook. & Arn.) Stuntz – not accepted
  Corculum leptopus (Hook. & Arn.) Stuntz – not accepted
  Alsia californica (Hook. & Arn.) Sull. – accepted – California alsia moss
  Chamaesyce bifida (Hook. & Arn.) T. Kuros. – not accepted
  Melicope sandwicensis (Hook. & Arn.) T.G. Hartley & B.C. Stone – accepted – Mt. Kaala melicope
  Eriodictyon californicum (Hook. & Arn.) Torr. – accepted – California yerba santa
  Malvastrum coccineum var. grossulariifolium (Hook. & Arn.) Torr. – not accepted
  Porterella carnosula (Hook. & Arn.) Torr. – accepted – porterplant, fleshy porterella
  Corethrogyne tomentella (Hook. & Arn.) Torr. & A. Gray – not accepted
  Erigeron concinnus (Hook. & Arn.) Torr. & A. Gray – accepted – Navajo fleabane, hairy daisy
  Erigeron concinnus var. concinnus (Hook. & Arn.) Torr. & A. Gray – accepted – Navajo fleabane, Navajo daisy
  Hemizonia pugens (Hook. & Arn.) Torr. & A. Gray – not accepted
  Hemizonia pugens var. pugens (Hook. & Arn.) Torr. & A. Gray – not accepted
  Hemizonia pungens (Hook. & Arn.) Torr. & A. Gray – not accepted – spikeweed, common tarweed, common spikeweed
  Hemizonia pungens ssp. pungens (Hook. & Arn.) Torr. & A. Gray – not accepted – spikeweed, common tarweed
  Mentzelia micrantha (Hook. & Arn.) Torr. & A. Gray – accepted – San Luis blazingstar
  Ceratochloa carinata (Hook. & Arn.) Tutin – not accepted
  Dupontia psilosantha var. flavescens (Hook. & Arn.) Vasey – not accepted
  Trifolium macraei var. dichotomum (Hook. & Arn.) W.H. Brewer ex S. Watson – not accepted
  Hedyotis terminalis (Hook. & Arn.) W.L. Wagner & D.R. Herbst – not accepted – variable starviolet
  Eremothera boothii ssp. alyssoides (Hook. & Arn.) W.L. Wagner & Hoch – accepted – alyssum evening primrose
  Tetrapteron graciliflorum (Hook. & Arn.) W.L. Wagner & Hoch – accepted – hill suncup
  Dicentra chrysantha (Hook. & Arn.) Walp. – accepted – golden eardrops
  Sinningia stricta (Hook. & Arn.) Wiehler – not accepted
  Trematolobelia macrostachys (Hook. & Arn.) Zahlbr. ex Rock – accepted – koli'i
  Ludwigia hexapetala (Hook. & Arn.) Zardini, H.Y. Gu & P.H. Raven – accepted
  Adenophorus hymenophylloides Hook. & Grev. – accepted – filmy kihifern
  Asplenium macraei Hook. & Grev. – accepted – MaCrae's spleenwort
  Cyathea sinuata Hook. & Grev. – accepted
  Deparia Hook. & Grev. – accepted – false spleenwort
  Hookeria acutifolia Hook. & Grev. – accepted – sharpleaf hookeria moss
  Lycopodium clavatum var. monostachyon Hook. & Grev. – not accepted
  Marsilea polycarpa Hook. & Grev. – accepted – Guayanan waterclover
  Marsilea vestita Hook. & Grev. – accepted – hairy pepperwort, water clover, hairy waterclover
  Marsilea vestita ssp. vestita Hook. & Grev. – not accepted – hairy pepperwort, hairy waterclover
  Ophioglossum ellipticum Hook. & Grev. – not accepted
  Orthotrichum drummondii Hook. & Grev. – not accepted
  Orthotrichum tenue Hook. & Grev. – not accepted
  Polypodium scouleri Hook. & Grev. – accepted – leathery polypody
  Tortula australasiae Hook. & Grev. – not accepted
  Tortula brevirostris Hook. & Grev. – not accepted
  Trichomanes krausii Hook. & Grev. – not accepted – treemoss bristle fern
  Barbula robusta (Hook. & Grev.) Brid. – not accepted
  Ulota drummondii (Hook. & Grev.) Brid. – accepted – Drummond's ulota moss
  Didymoglossum krausii (Hook. & Grev.) C. Presl – accepted – treemoss bristle fern
  Athyrium macraei (Hook. & Grev.) Copel. – not accepted
  Bucklandiella subsecunda (Hook. & Grev. ex Harv.) Bedn.-Ochyra & Ochyra – accepted
  Trichostomopsis australasiae (Hook. & Grev.) H. Rob. – not accepted – Australasia trichostomopsis moss
  Aloina brevirostris (Hook. & Grev.) Kindb. – accepted
  Pterygophyllum acutifolium (Hook. & Grev.) Müll. Hal. – not accepted
  Didymodon australasiae (Hook. & Grev.) R.H. Zander – accepted
  Alsophila sinuata (Hook. & Grev.) R.M. Tryon – not accepted
  Macromitrium microstomum (Hook. & Grev.) Schwägr. – accepted
  Lycopodium clavatum ssp. monostachyon (Hook. & Grev.) Selander – not accepted
  Elaphoglossum paleaceum (Hook. & Grev.) Sledge – accepted
  Selaginella douglasii (Hook. & Grev.) Spring – accepted – Douglas' spikemoss
  Selaginella lepidophylla (Hook. & Grev.) Spring – accepted – flower of stone
  Selaginella menziesii (Hook. & Grev.) Spring – not accepted – Menzies' spikemoss
  Macrocoma tenuis (Hook. & Grev.) Vitt – accepted
  Greyia Hook. & Harv. – accepted – Natal bottlebrush
  Lyrocarpa Hook. & Harv. – accepted – lyrepod
  Lyrocarpa coulteri Hook. & Harv. – accepted – Coulter lyrefruit, Coulter's lyrepod
  Lyrocarpa coulteri var. coulteri Hook. & Harv. – not accepted – Coulter lyrepod, Coulter's lyrepod
  Anomodon Hook. & Taylor – accepted
  Daltonia Hook. & Taylor – accepted
  Orthotrichum lyellii Hook. & Taylor – not accepted – Lyell's orthotrichum moss
  Weissia tenuirostris Hook. & Taylor – not accepted
  Zygodon Hook. & Taylor – accepted
  Oxystegus tenuirostris (Hook. & Taylor) A.J.E. Sm. – accepted
  Oxystegus tenuirostris var. tenuirostris (Hook. & Taylor) A.J.E. Sm. – accepted
  Dorcadion lyellii (Hook. & Taylor) Lindb. – not accepted
  Trichostomum tenuirostre (Hook. & Taylor) Lindb. – not accepted
  Trichostomum tenuirostre var. tenuirostre (Hook. & Taylor) Lindb. – not accepted
  Pulvigera lyellii (Hook. & Taylor) Plásek, Sawicki & Ochyra – accepted
  Bryum marratii Hook. & Wilson – not accepted – Marrat's bryum moss
  Clasmatodon Hook. & Wilson – accepted
  Daltonia nervosa Hook. & Wilson – not accepted
  Dicranum julaceum Hook. & Wilson – not accepted
  Didymodon fragilis Hook. & Wilson – not accepted
  Fissidens hyalinus Hook. & Wilson – accepted
  Fontinalis disticha Hook. & Wilson – not accepted
  Hypnum fulvum Hook. & Wilson – not accepted
  Neckera breviseta Hook. & Wilson – not accepted
  Schistidium serratum Hook. & Wilson – not accepted
  Microdus debilis (Hook. & Wilson) Besch. – not accepted
  Ptychostomum marratii (Hook. & Wilson) J. R. Spence – accepted
  Tortella fragilis (Hook. & Wilson) Limpr. – accepted – fragile tortella moss
  Entodon brevisetus (Hook. & Wilson) Lindb. – accepted
  Hygroamblystegium irriguum (Hook. & Wilson) Loeske – not accepted
  Cryphaea nervosa (Hook. & Wilson) Müll. Hal. – accepted
  Amblystegium irriguum (Hook. & Wilson) Schimp. – not accepted
  Aphanorhegma serrata (Hook. & Wilson) Sull. – not accepted
  Aphanorrhegma serratum (Hook. & Wilson) Sull. – accepted – serrate aphanorrhegma moss
  Smilax herbacea var. lasioneura (Hook.) A. DC. – not accepted
  Schistochila glaucescens (Hook.) A. Evans – accepted
  Aster sibiricus var. giganteus (Hook.) A. Gray – not accepted – giant arctic aster
  Astragalus bisulcatus (Hook.) A. Gray – accepted – twogrooved milkvetch, two-groove milkvetch
  Astragalus bisulcatus var. bisulcatus (Hook.) A. Gray – accepted – twogrooved milkvetch, two-groove milk-vetch
  Boykinia ranunculifolia (Hook.) A. Gray – not accepted
  Chrysopsis villosa var. hispida (Hook.) A. Gray – not accepted
  Haplopappus carthamoides (Hook.) A. Gray – not accepted
  Helianthella quinquenervis (Hook.) A. Gray – accepted – fivenerve helianthella, nodding dwarf-sunflower, nodding helianthella
  Hieracium triste var. gracile (Hook.) A. Gray – not accepted
  Physaria didymocarpa (Hook.) A. Gray – accepted – common twinpod
  Physaria didymocarpa ssp. didymocarpa (Hook.) A. Gray – accepted – common twinpod
  Physaria didymocarpa var. didymocarpa (Hook.) A. Gray – not accepted – common twinpod
  Physaria geyeri (Hook.) A. Gray – accepted – Geyer's twinpod
  Physaria geyeri ssp. geyeri (Hook.) A. Gray – accepted – Geyer's twinpod
  Physaria geyeri var. geyeri (Hook.) A. Gray – not accepted – Geyer's twinpod
  Pyrola rotundifolia var. bracteata (Hook.) A. Gray – not accepted
  Steironema radicans (Hook.) A. Gray – not accepted
  Thelesperma filifolium (Hook.) A. Gray – accepted – stiff greenthread, plains greenthread, greenthread
  Thelesperma filifolium var. filifolium (Hook.) A. Gray – not accepted – stiff greenthread
  Townsendia florifer (Hook.) A. Gray – accepted – showy Townsend daisy
  Townsendia florifera (Hook.) A. Gray – not accepted – showy Townsend daisy, showy townsendia
  Triticum dasystachyum (Hook.) A. Gray – not accepted
  Kalmia microphylla (Hook.) A. Heller – accepted – alpine bog laurel, alpine laurel
  Kalmia microphylla var. microphylla (Hook.) A. Heller – accepted – western alpine laurel, small-leaved kalmia, alpine laurel
  Sabina occidentalis (Hook.) A. Heller – not accepted
  Callicostella scabriseta (Hook.) A. Jaeger – not accepted
  Hyophila involuta (Hook.) A. Jaeger – accepted
  Isopterygium albescens (Hook.) A. Jaeger – accepted
  Oxytropis glabrata (Hook.) A. Nelson – not accepted
  Idahoa scapigera (Hook.) A. Nelson & J.F. Macbr. – accepted – flatpod, oldstem idahoa
  Salix rigida ssp. mackenzieana (Hook.) A.E. Murray – not accepted
  Oxytropis campestris ssp. melanocephala (Hook.) A.E. Porsild – not accepted
  Oxytropis maydelliana ssp. melanocephala (Hook.) A.E. Porsild – not accepted
  Vahlodea atropurpurea ssp. latifolia (Hook.) A.E. Porsild – not accepted
  Pellaea ternifolia var. wrightiana (Hook.) A.F. Tryon – not accepted
  Salix lanata ssp. richardsonii (Hook.) A.K. Skvortsov – not accepted – Richardson's willow
  Tiquilia nuttallii (Hook.) A.T. Richardson – accepted – Nuttall's tiquilia, rosette crinklemat, Nuttall's crinklemat
  Honckenya peploides var. major (Hook.) Abrams – not accepted
  Hosackia pinnata (Hook.) Abrams – accepted – meadow bird's-foot trefoil
  Salix reticulata var. nivalis (Hook.) Andersson – not accepted
  Vicia tetrasperma var. gracilis (Hook.) Asch. & Graebn. – not accepted
  Amblystegium compactum (Hook.) Austin – not accepted
  Cryptomitrium tenerum (Hook.) Austin ex Underw. – accepted
  Abies balsamea ssp. lasiocarpa (Hook.) B. Boivin – not accepted
  Blechnum spicant var. elongatum (Hook.) B. Boivin – not accepted
  Braya humilis var. americana (Hook.) B. Boivin – not accepted
  Gentiana crinita var. browniana (Hook.) B. Boivin – not accepted
  Matricaria maritima var. nana (Hook.) B. Boivin – not accepted
  Oxytropis podocarpa var. inflata (Hook.) B. Boivin – not accepted
  Phlox gracilis var. humilior (Hook.) B. Boivin – not accepted
  Woodsia oregana var. lyallii (Hook.) B. Boivin – not accepted
  Desmodium canescens var. hirsutum (Hook.) B.L. Rob. – not accepted
  Silphium integrifolium var. asperrimum (Hook.) B.L. Turner – not accepted
  Palaquium gutta (Hook.) Baill. – accepted – gutta percha
  Zantedeschia albomaculata (Hook.) Baill. – accepted – spotted calla lily
  Astragalus robbinsii var. minor (Hook.) Barneby – accepted – Robbins' milkvetch
  Oxytropis deflexa var. foliolosa (Hook.) Barneby – accepted – nodding locoweed, pendant-pod crazyweed, pendantpod locoweed
  Oxytropis nigrescens var. uniflora (Hook.) Barneby – accepted – one-flowered blackish locoweed, oneflower blackish locoweed
  Oxytropis sericea var. spicata (Hook.) Barneby – not accepted – Rocky Mountain locoweed
  Oxytropis viscida var. subsucculenta (Hook.) Barneby – not accepted
  Astragalus laxmannii var. robustior (Hook.) Barneby & S.L. Welsh – accepted – prairie milkvetch
  Salix balsamifera (Hook.) Barratt ex Andersson – not accepted
  Salix mackenzieana (Hook.) Barratt ex Andersson – not accepted
  Iva axillaris ssp. robustior (Hook.) Bassett – not accepted
  Gloxinia maculata var. pallidiflora (Hook.) Bedd. – not accepted
  Athroostachys capitata (Hook.) Benth. – accepted
  Brunfelsia hopeana (Hook.) Benth. – not accepted
  Eremocarpus setiger (Hook.) Benth. – not accepted
  Eremocarpus setigerus (Hook.) Benth. – not accepted – doveweed, turkey mullein
  Helipterum roseum (Hook.) Benth. – not accepted
  Isoloma seemannii (Hook.) Benth. – not accepted
  Lotus unifoliolatus (Hook.) Benth. – not accepted – American bird's-foot trefoil, American birdsfoot trefoil, American bird's-foot-trefoil
  Lotus unifoliolatus var. unifoliolatus (Hook.) Benth. – not accepted – American bird's-foot trefoil, prairie trefoil, American bird's-foot-trefoil, Spanish clover
  Hormidium pygmaeum (Hook.) Benth. & Hook. f. – not accepted
  Phinaea albolineata (Hook.) Benth. ex Hemsl. – accepted
  Isoloma ocellatum (Hook.) Benth. ex Jacks. – not accepted
  Rorippa curvisiliqua (Hook.) Bessey ex Britton – accepted – curvepod yellowcress
  Rorippa curvisiliqua var. curvisiliqua (Hook.) Bessey ex Britton – not accepted – curvepod yellowcress
  Cyathea borbonica var. latifolia (Hook.) Bonap. – not accepted
  Phlox longifolia var. linearifolia (Hook.) Brand – not accepted
  Erigeron asperum var. pubescens (Hook.) Breitung – not accepted
  Helicophyllum (Hook.) Brid. – accepted
  Helicophyllum torquatum (Hook.) Brid. – accepted
  Hydropogon fontinaloides (Hook.) Brid. – accepted
  Philonotis fontana var. falcata (Hook.) Brid. – not accepted
  Achimenes tubiflora (Hook.) Britton – not accepted
  Amphiglottis pallidiflora (Hook.) Britton – not accepted
  Gaertneria acanthicarpa (Hook.) Britton – not accepted
  Matricaria grandiflora (Hook.) Britton – not accepted
  Senecio discoideus (Hook.) Britton – not accepted
  Echinocereus chlorophthalmus (Hook.) Britton & Rose – not accepted
  Gymnocalycium leeanum (Hook.) Britton & Rose – not accepted
  Gymnocalycium multiflorum (Hook.) Britton & Rose – not accepted
  Hyalocereus lemairei (Hook.) Britton & Rose – not accepted
  Hylocereus lemairei (Hook.) Britton & Rose – not accepted
  Lobivia cinnabarina (Hook.) Britton & Rose – not accepted
  Lobivia pentlandii (Hook.) Britton & Rose – not accepted
  Schlumbergera russelliana (Hook.) Britton & Rose – accepted
  Selenicereus macdonaldiae (Hook.) Britton & Rose – not accepted
  Vicia nigricans var. gigantea (Hook.) Broich – accepted – giant vetch
  Rhytidiopsis robusta (Hook.) Broth. – accepted – robust rhytidiopsis moss
  Rhytidiopsis robustus (Hook.) Broth. – not accepted
  Braunia secunda (Hook.) Bruch & Schimp. – accepted
  Mielichhoferia macrocarpa (Hook.) Bruch & Schimp. – not accepted – waterfall copper moss
  Orthodontium pellucens (Hook.) Bruch & Schimp. – accepted
  Pottia wilsonii (Hook.) Bruch & Schimp. – not accepted – Wilson's pottia moss
  Ceterach dalhousiae (Hook.) C. Chr. – not accepted
  Riccardia eriocaula (Hook.) C. Massal. – accepted
  Heliopsis minor (Hook.) C. Mohr – not accepted
  Vancouveria hexandra (Hook.) C. Morren & Decne. – accepted – northern inside-out flower, white insideout flower
  Cyathea alternans (Hook.) C. Presl – accepted
  Spiraea douglasii var. menziesii (Hook.) C. Presl – accepted – Menzies' spirea
  Aeschynanthus miniatus var. cordifolius (Hook.) C.B. Clarke – not accepted
  Cyathea brunoniana (Hook.) C.B. Clarke & Baker – accepted
  Salix glauca ssp. glauca var. acutifolia (Hook.) C.K. Schneid. – not accepted
  Salix glauca var. acutifolia (Hook.) C.K. Schneid. – accepted – grayleaf willow
  Agrostis exarata ssp. minor (Hook.) C.L. Hitchc. – not accepted
  Amelanchier alnifolia var. semiintegrifolia (Hook.) C.L. Hitchc. – accepted – Pacific serviceberry, Saskatoon serviceberry
  Atriplex oatula var. zosterifolia (Hook.) C.L. Hitchc. – not accepted
  Atriplex patula var. zosterifolia (Hook.) C.L. Hitchc. – not accepted
  Hypericum formosum ssp. scouleri (Hook.) C.L. Hitchc. – not accepted
  Hieracium triste ssp. gracile (Hook.) Calder & Roy L. Taylor – not accepted
  Kalmia polifolia ssp. microphylla (Hook.) Calder & Roy L. Taylor – not accepted
  Sanguisorba canadensis ssp. latifolia (Hook.) Calder & Roy L. Taylor – not accepted
  Spiraea douglasii ssp. menziesii (Hook.) Calder & Roy L. Taylor – not accepted
  X Cyathidaria wilsonii (Hook.) Caluff & Shelton – not accepted
  Hymenostomum rostellatum var. phascoides (Hook.) Cardot – not accepted
  Pallavicinia lyellii (Hook.) Carruth. – accepted
  Sinningia cochlearis (Hook.) Chautems – accepted
  Bolbitis fluviatilis (Hook.) Ching – accepted
  Sticherus owhyensis (Hook.) Ching – not accepted – Hawai'i umbrella fern
  Sticherus owhyhensis (Hook.) Ching – accepted
  Hymenoxys richardsonii (Hook.) Cockerell – accepted – pingue rubberweed, Colorado rubberweed, pingue, pingue hymenoxys
  Hymenoxys richardsonii var. richardsonii (Hook.) Cockerell – accepted – pingue rubberweed, Colorado rubberweed, pingue hymenoxys
  Oxytropis deflexa ssp. foliolosa (Hook.) Cody – not accepted
  Oxytropis sericea ssp. spicata (Hook.) Cody – not accepted
  Atriplex spinosa (Hook.) Collotzi – not accepted
  Ctenitis honolulensis (Hook.) Copel. – not accepted – Honolulu lacefern
  Cyathea caudata (Hook.) Copel. – accepted
  Cyathea crinita (Hook.) Copel. – accepted
  Cyathea decurrens (Hook.) Copel. – accepted
  Cyathea decurrens var. decurrens (Hook.) Copel. – accepted
  Cyathea podophylla (Hook.) Copel. – accepted
  Cyathea ramispina (Hook.) Copel. – accepted
  Gymnosphaera ramispina (Hook.) Copel. – not accepted
  Diplomitrion hibernicum (Hook.) Corda – not accepted
  Diplomitrion lyellii (Hook.) Corda – not accepted
  Euphorbia splendens var. bojeri (Hook.) Costantin & Gallaud – not accepted
  Franseria acanthicarpa (Hook.) Coville – not accepted
  Phyllodoce glanduliflora (Hook.) Coville – accepted – yellow mountain heather, yellow mountainheath
  Ribes oxyacanthoides var. saxosum (Hook.) Coville – not accepted
  Artemisia campestris ssp. borealis var. purshii (Hook.) Cronq. – not accepted – Pursh's wormwood
  Artemisia campestris var. scouleriana (Hook.) Cronq. – not accepted – field sagewort
  Artemisia campestris ssp. borealis var. scouleriana (Hook.) Cronquist – not accepted – field sagewort
  Artemisia campestris var. purshii (Hook.) Cronquist – not accepted
  Erigeron acris var. elatus (Hook.) Cronquist – not accepted
  Erigeron glabellus ssp. pubescens (Hook.) Cronquist – not accepted
  Microsteris gracilis var. humilior (Hook.) Cronquist – accepted – slender phlox
  Penstemon procerus var. tolmiei (Hook.) Cronquist – accepted – Tolmie's penstemon
  Salix rigida var. mackenzieana (Hook.) Cronquist – not accepted
  Prenanthes alata (Hook.) D. Dietr. – accepted – western rattlesnakeroot
  Penstemon procerus ssp. tolmiei (Hook.) D.D. Keck – not accepted
  Zauschneria californica ssp. latifolia (Hook.) D.D. Keck – not accepted
  Astrolepis integerrima (Hook.) D.M. Benham & Windham – accepted – hybrid cloakfern, hybrid lipfern
  Alsophila imrayana (Hook.) D.S. Conant – not accepted
  Chrysopsis hispida (Hook.) DC. – not accepted
  Cirsium foliosum (Hook.) DC. – accepted – elk thistle, Drummond's thistle, leafy thistle, meadow thistle
  Cirsium remotifolium (Hook.) DC. – accepted – fewleaf thistle
  Cirsium remotifolium ssp. remotifolium (Hook.) DC. – not accepted – fewleaf thistle
  Cirsium remotifolium var. remotifolium (Hook.) DC. – accepted – fewleaf thistle, remote-leaved thistle
  Gaillardia drummondii (Hook.) DC. – not accepted
  Pieris phillyreifolia (Hook.) DC. – accepted – climbing fetterbush
  Pieris phyllyreifolia (Hook.) DC. – not accepted
  Corytholoma ellipticum (Hook.) Decne. – not accepted
  Corytholoma lindleyi (Hook.) Decne. – not accepted
  Dircaea fascialis (Hook.) Decne. – not accepted
  Dircaea lateritia (Hook.) Decne. – not accepted
  Hoodia currorii (Hook.) Decne. – accepted
  Hoodia currorii ssp. currorii (Hook.) Decne. – accepted
  Houttea gardneri (Hook.) Decne. – not accepted
  Houttea pardina (Hook.) Decne. – not accepted
  Isoloma triflorum (Hook.) Decne. – not accepted
  Pentaraphia calycosa (Hook.) Decne. – not accepted
  Isoloma pictum (Hook.) Decne. ex Planch. – not accepted
  Euphorbia splendens ssp. bojeri (Hook.) Denis – not accepted
  Comarostaphylis discolor (Hook.) Diggs – accepted
  Acer glabrum var. douglasii (Hook.) Dippel – accepted – Douglas' maple
  Cyathea aterrima (Hook.) Domin – accepted
  Cyathea phegopteroides (Hook.) Domin – accepted
  Cyathea platylepis (Hook.) Domin – accepted
  Cyathea poeppigii (Hook.) Domin – accepted
  Cyathea sagittifolia (Hook.) Domin – accepted
  Cyathea salvinii (Hook.) Domin – accepted
  Cyathea X calolepis (Hook.) Domin – accepted
  Cyathea X wilsonii (Hook.) Domin – accepted
  Descurainia incana var. major (Hook.) Dorn – not accepted
  Gayophytum diffusum var. strictipes (Hook.) Dorn – not accepted
  Loeflingia squarrosa var. texana (Hook.) Dorn – not accepted
  Salix eriocephala ssp. mackenzieana (Hook.) Dorn – not accepted
  Salix eriocephala var. mackenzieana (Hook.) Dorn – not accepted
  Astragalus collinus (Hook.) Douglas ex G. Don – accepted – hillside milkvetch
  Astragalus collinus var. collinus (Hook.) Douglas ex G. Don – accepted – hillside milkvetch
  Encyclia pygmaea (Hook.) Dressler – not accepted – Encyclia pigmea, dwarf butterfly orchid
  Macropidia fuliginosa (Hook.) Druce – accepted
  Aneura pinguis var. angustior (Hook.) Dumort. – not accepted
  Aplozia sphaerocarpa (Hook.) Dumort. – not accepted
  Colura calyptrifolia (Hook.) Dumort. – accepted
  Dilaena hibernica (Hook.) Dumort. – not accepted
  Dilaena lyellii (Hook.) Dumort. – not accepted
  Diplolaena hibernica (Hook.) Dumort. – not accepted
  Diplolaena lyellii (Hook.) Dumort. – not accepted
  Diplophyllum obtusifolium (Hook.) Dumort. – accepted
  Diplophyllum obtusifolium ssp. obtusifolium (Hook.) Dumort. – accepted
  Jubula hutchinsiae (Hook.) Dumort. – accepted
  Jubula hutchinsiae ssp. hutchinsiae (Hook.) Dumort. – accepted
  Schistochila lamellata (Hook.) Dumort. ex A. Evans – accepted
  Lepicolea scolopendra (Hook.) Dumort. ex Trevis. – accepted
  Lepidolaena clavigera (Hook.) Dumort. ex Trevis. – accepted
  Lepidolaena palpebrifolia (Hook.) Dumort. ex Trevis. – accepted
  Schistochila appendiculata (Hook.) Dumort. ex Trevis. – accepted
  Palamocladium leskeoides (Hook.) E. Britton – accepted
  Dendroalsia abietina (Hook.) E. Britton ex Broth. – accepted
  Thamnobryum neckeroides (Hook.) E. Lawton – accepted – Necker's thamnobryum moss
  Agropyron subvillosum (Hook.) E.E. Nelson – not accepted
  Sporobolus cryptandrus ssp. fuscicola (Hook.) E.K. Jones & Fassett – not accepted
  Sporobolus cryptandrus ssp. fuscicolor (Hook.) E.K. Jones & Fassett – not accepted
  Blyttia lyellii (Hook.) Endl. ex Gottsche Lindenb. & Nees – not accepted
  Thelypodium laciniatum (Hook.) Endl. ex Walp. – accepted – cutleaf thelypody
  Suksdorfia ranunculifolia (Hook.) Engl. – accepted – buttercup suksdorfia
  Delphinium burkei ssp. distichiflorum (Hook.) Ewan – not accepted
  Campanula scouleri Hook. ex A. DC. – accepted – pale bellflower
  Paysonia lasiocarpa (Hook. ex A. Gray) O'Kane & Al-Shehbaz – accepted – roughpod bladderpod
  Paysonia lasiocarpa ssp. lasiocarpa (Hook. ex A. Gray) O'Kane & Al-Shehbaz – accepted – roughpod bladderpod
  Lesquerella lasiocarpa (Hook. ex A. Gray) S. Watson – not accepted – roughpod bladderpod
  Lesquerella lasiocarpa ssp. lasiocarpa (Hook. ex A. Gray) S. Watson – not accepted – roughpod bladderpod
  Lesquerella lasiocarpa var. lasiocarpa (Hook. ex A. Gray) S. Watson – not accepted – roughpod bladderpod
  Cyathea cooperi (Hook. ex F. Muell.) Domin – accepted – Cooper's cyathea, scaly tree fern
  Sphaeropteris cooperi (Hook. ex F. Muell.) R.M. Tryon – not accepted – Cooper's cyathea
  Dryopteris goldiana (Hook. ex Goldie) A. Gray – accepted – Goldie's woodfern
  Didymodon vaginatus Hook. ex Harv. – not accepted
  Symblepharis vaginata (Hook. ex Harv.) Wijk & Margad. – accepted
  Bowenia Hook. ex Hook. f. – accepted
  Bowenia spectabilis Hook. ex Hook. f. – accepted
  Alsophila milnei (Hook. ex Hook. f.) R.M. Tryon – not accepted
  Tradescantia virginiana var. alba Hook. ex Raf. – not accepted
  Chaerophyllum tainturieri var. dasycarpum Hook. ex S. Watson – accepted – hairyfruit chervil
  Chaerophyllum dasycarpum (Hook. ex S. Watson) Nutt. ex Small – not accepted
  Besleria mollis Hook. ex Steud. – not accepted
  Potentilla flabellifolia Hook. ex Torr. & A. Gray – accepted – high mountain cinquefoil, Mount Rainier cinquefoil
  Ziziphus obtusifolia (Hook. ex Torr. & A. Gray) A. Gray – accepted – graythorn, Lote bush, lotebush
  Ziziphus obtusifolia var. obtusifolia (Hook. ex Torr. & A. Gray) A. Gray – accepted – graythorn, lotebush
  Condalia obtusifolia (Hook. ex Torr. & A. Gray) Weberb. – not accepted
  Acanthonema Hook. f. – accepted
  Acanthonema strigosum Hook. f. – accepted
  Agalmyla tuberculata Hook. f. – accepted
  Agrostis antarctica Hook. f. – not accepted
  Agrostis falklandica Hook. f. – not accepted
  Agrostis foliata Hook. f. – accepted
  Agrostis multiculmis Hook. f. – not accepted
  Agrostis prostrata Hook. f. – not accepted
  Agrostis tenuifolia var. fretensis Hook. f. – not accepted
  Aira antarctica Hook. f. – not accepted
  Aira kingii Hook. f. – not accepted
  Aira magellanica Hook. f. – not accepted
  Aira parvula Hook. f. – not accepted
  Alloplectus discolor Hook. f. – not accepted
  Alloplectus lynchii Hook. f. – not accepted
  Alopecurus alpinus var. aristatus Hook. f. – not accepted
  Alopecurus alpinus var. gracilior Hook. f. – not accepted
  Alsophila colensoi Hook. f. – not accepted
  Andreaea wilsoni Hook. f. – not accepted
  Arthraxon inermis Hook. f. – not accepted
  Aster tibeticus Hook. f. – not accepted
  Avena leptostachys Hook. f. – not accepted
  Avena sativa var. sericea Hook. f. – not accepted
  Besleria imrayi Hook. f. – not accepted
  Bromus pictus Hook. f. – not accepted
  Calamagrostis pumila Hook. f. – not accepted
  Calochortus leichtlinii Hook. f. – accepted – Leichtlin's mariposa lily, smokey mariposa
  Caltha novae-zelandiae Hook. f. – accepted
  Carica candamarcensis Hook. f. – not accepted
  Catabrosa magellanica Hook. f. – not accepted
  Celmisia spectabilis Hook. f. – accepted
  Cerastium arvense var. fuegianum Hook. f. – not accepted
  Ceropegia beddomei Hook. f. – accepted
  Ceropegia intermedia var. wightii Hook. f. – accepted
  Ceropegia lawii Hook. f. – accepted
  Chenopodium macrospermum Hook. f. – accepted – largeseed goosefoot
  Chenopodium macrospermum Hook. f. – not accepted
  Chirita clarkei Hook. f. – not accepted
  Chirita depressa Hook. f. – accepted
  Cneoridium Hook. f. – accepted
  Coelarthron Hook. f. – not accepted
  Cordyline banksii Hook. f. – accepted – ti ngahere
  Croton ardisioides Hook. f. – not accepted
  Croton caudatus var. malaccanus Hook. f. – not accepted
  Croton erythrostachys Hook. f. – accepted
  Croton erythrostachys var. erythrostachys Hook. f. – accepted
  Croton griffithii Hook. f. – accepted
  Croton laevifolius Hook. f. – not accepted
  Croton macraei Hook. f. – not accepted
  Croton scouleri Hook. f. – accepted
  Croton scouleri var. scouleri Hook. f. – accepted
  Croton xalapensis Hook. f. – not accepted
  Ctenolepis Hook. f. – accepted
  Curcuma australasica Hook. f. – accepted
  Cyathea cunninghamii Hook. f. – accepted – gully tree fern, slender tree fern
  Cyathea smithii Hook. f. – accepted – soft tree fern
  Dacrydium franklinii Hook. f. – not accepted – Huon pine
  Danthonia cachemyriana var. minor Hook. f. – not accepted
  Danthonia cumminsii Hook. f. – not accepted
  Danthonia nervosa Hook. f. – not accepted
  Dicraurus Hook. f. – not accepted
  Dicraurus leptocladus Hook. f. – not accepted
  Didymocarpus lacunosus Hook. f. – not accepted
  Didymocarpus malayanus Hook. f. – not accepted
  Dioclea reflexa Hook. f. – accepted
  Drummondia clavellata Hook. f. – not accepted
  Drymonia marmorata Hook. f. – not accepted
  Dyera Hook. f. – accepted
  Eggersia buxifolia Hook. f. – not accepted
  Elymus antarcticus Hook. f. – not accepted
  Elymus antarcticus var. antarcticus Hook. f. – not accepted
  Episcia erythropus Hook. f. – not accepted
  Episcia maculata Hook. f. – not accepted
  Erianthus elephantinus Hook. f. – not accepted
  Eubrachion Hook. f. – accepted – tapeworm-plant
  Eucalyptus coccifera Hook. f. – accepted
  Eucalyptus gunnii Hook. f. – accepted – cider gum
  Eucalyptus nitida Hook. f. – accepted – Smithton peppermint gum
  Eucalyptus risdonii Hook. f. – accepted – Risdon peppermint gum
  Eucalyptus urnigera Hook. f. – accepted – urn gum, urn-fruit gum
  Eucalyptus vernicosa Hook. f. – accepted
  Euphorbia ampla Hook. f. – not accepted
  Euphorbia ampla var. tenuior Hook. f. – not accepted
  Euphorbia amplexicaulis Hook. f. – accepted
  Euphorbia burmanica Hook. f. – accepted
  Euphorbia clarkeana Hook. f. – accepted
  Euphorbia diffusa Hook. f. – not accepted
  Euphorbia emodi Hook. f. – not accepted
  Euphorbia griffithii Hook. f. – accepted
  Euphorbia griffithii var. griffithii Hook. f. – accepted
  Euphorbia nummularia Hook. f. – accepted
  Euphorbia obesa Hook. f. – accepted
  Euphorbia obesa ssp. obesa Hook. f. – accepted
  Euphorbia recurva Hook. f. – accepted
  Euphorbia viminea Hook. f. – accepted
  Euphorbia wallichii Hook. f. – accepted
  Euphorbia wightiana Hook. f. – not accepted
  Eutriana affinis Hook. f. – not accepted
  Eutriana gracilis Hook. f. – not accepted
  Eutriana pilosa Hook. f. – not accepted
  Festuca antarctica var. g Hook. f. – not accepted
  Festuca arundo Hook. f. – not accepted
  Festuca fuegiana Hook. f. – not accepted
  Festuca gracillima Hook. f. – accepted
  Festuca gracillima subvar. gracillima Hook. f. – not accepted
  Festuca gracillima var. gracillima Hook. f. – accepted
  Fitchia Hook. f. – accepted – fitchia
  Flagellaria plicata Hook. f. – not accepted
  Fraxinus mariesii Hook. f. – not accepted – Maries' ash
  Galanthus elewesii Hook. f. – not accepted
  Galanthus elwesii Hook. f. – accepted – giant snowdrop
  Garcinia hanburyi Hook. f. – accepted – Hanbury's garcinia
  Geranium microphyllum Hook. f. – not accepted
  Geranium traversii Hook. f. – accepted – cranesbill
  Gladiolus papilio Hook. f. – accepted – goldblotch gladiolus
  Gloxinia hypocyrtiflora Hook. f. – not accepted
  Gonystylus maingayi Hook. f. – accepted
  Hierochloe magellanica Hook. f. – not accepted
  Hopea micrantha Hook. f. – accepted – hopea
  Hordeum pubiflorum Hook. f. – accepted
  Hordeum pubiflorum ssp. pubiflorum Hook. f. – accepted
  Illicium verum Hook. f. – accepted – staranise tree
  Impatiens balfourii Hook. f. – accepted – Balfour's touch-me-not
  Impatiens sultani Hook. f. – not accepted
  Impatiens walleriana Hook. f. – accepted – buzzy lizzy
  Indigofera atriceps Hook. f. – accepted
  Ischnochloa Hook. f. – not accepted
  Ixora thwaitesii Hook. f. – accepted – white jungleflame
  Kaliphora Hook. f. – accepted
  Kaliphora madagascariensis Hook. f. – accepted
  Linanthus parviflorus var. rosaceus Hook. f. – not accepted
  Linaria maroccana Hook. f. – accepted – Moroccan toadflax
  Lophopyxis maingayi Hook. f. – accepted
  Macrozamia corallipes Hook. f. – not accepted
  Mecranium Hook. f. – accepted
  Muhlenbergia rariflora Hook. f. – not accepted
  Nepenthes bicalcarata Hook. f. – accepted
  Nepenthes hirsuta Hook. f. – accepted
  Nepenthes khasiana Hook. f. – accepted
  Nepenthes lowii Hook. f. – accepted
  Nepenthes northiana Hook. f. – accepted
  Nepenthes rajah Hook. f. – accepted
  Nepenthes tentaculata Hook. f. – accepted
  Nepenthes veitchii Hook. f. – accepted
  Nepenthes vieillardii Hook. f. – accepted
  Nepenthes villosa Hook. f. – accepted
  Neyraudia Hook. f. – accepted – neyraudia
  Olyra concinna Hook. f. – not accepted
  Paspalum penicillatum Hook. f. – accepted
  Poa scaberula Hook. f. – accepted
  Polygonum campanulatum Hook. f. – not accepted – bellflower smartweed
  Polypogon chonoticus Hook. f. – not accepted
  Polypogon littoralis var. muticus Hook. f. – not accepted
  Prestoea Hook. f. – accepted – prestoea
  Primulina sinensis Hook. f. – not accepted
  Saccharum modhara Hook. f. – not accepted
  Sanchezia nobilis Hook. f. – not accepted
  Senkenbergia coulteri Hook. f. – not accepted
  Serenoa Hook. f. – accepted – serenoa
  Solanum wendlandii Hook. f. – accepted – giant potatocreeper
  Stenogastra concinna Hook. f. – not accepted
  Streptocarpus dunnii Hook. f. – accepted
  Streptocarpus galpinii Hook. f. – accepted
  Streptocarpus kirkii Hook. f. – accepted
  Streptocarpus mahonii Hook. f. – not accepted
  Streptocarpus parviflorus Hook. f. – accepted
  Streptocarpus parviflorus ssp. parviflorus Hook. f. – accepted
  Synadenium grantii Hook. f. – not accepted
  Telfairia occidentalis Hook. f. – accepted – fluted gourd
  Tephrosia vogelii Hook. f. – accepted – Vogel's tephrosia
  Triodia antarctica Hook. f. – not accepted
  Vicia kingii Hook. f. – not accepted
  Vicia magellanica Hook. f. – accepted
  Welwitschia Hook. f. – accepted
  Welwitschia mirabilis Hook. f. – accepted
  Euphorbia beaumieriana Hook. f. & Coss. – not accepted
  Euphorbia echinus Hook. f. & Coss. – not accepted
  Euphorbia officinarum var. beaumieriana (Hook. f. & Coss.) Maire – not accepted
  Euphorbia officinarum ssp. beaumieriana (Hook. f. & Coss.) Vindt – accepted
  Euphorbia officinarum ssp. echinus (Hook. f. & Coss.) Vindt – accepted
  Aberia caffra Hook. f. & Harv. – not accepted
  Dovyalis caffra (Hook. f. & Harv.) Warb. – accepted – kei apple
  Monoclea adglutinata Hook. f. & Taylor – not accepted
  Monoclea leptohymenia Hook. f. & Taylor – not accepted
  Dendroceros adglutinatus (Hook. f. & Taylor) Gottsche – accepted
  Megaceros leptohymenius (Hook. f. & Taylor) Steph. – accepted
  Rhynchotechum X latifolium Hook. f. & Thoms. ex C.B. Clarke – not accepted
  Aeschynanthus peelii Hook. f. & Thomson – not accepted
  Hodgsonia Hook. f. & Thomson – accepted
  Parrya platycarpa Hook. f. & Thomson – not accepted
  Saxifraga umbellulata Hook. f. & Thomson – accepted
  Stelechocarpus Hook. f. & Thomson – accepted
  Talauma hodgsonii Hook. f. & Thomson – accepted
  Aeschynanthus bracteatus var. peelii (Hook. f. & Thomson) C.B. Clarke – not accepted
  Juniperus wallichiana Hook. f. & Thomson ex Brandis – accepted – black juniper
  Gaultheria pyroloides Hook. f. & Thomson ex Miquel – accepted – Japanese wintergreen, Miquel's spicywintergreen
  Andreaea acutifolia Hook. f. & Wilson – accepted
  Andreaea mutabilis Hook. f. & Wilson – accepted
  Calomnion Hook. f. & Wilson – accepted
  Lopidium Hook. f. & Wilson – accepted
  Camptochaete pulvinata (Hook. f. & Wilson) A. Jaeger – accepted
  Tetraphidopsis (Hook. f. & Wilson) Dixon – accepted
  Muelleriella crassifolia (Hook. f. & Wilson) Dusén – accepted
  Racomitrium crispulum (Hook. f. & Wilson) Hook. f. & Wilson – accepted
  Rhacomitrium crispulum (Hook. f. & Wilson) Hook. f. & Wilson – not accepted
  Acroschisma (Hook. f. & Wilson) Lindl. – accepted
  Bryum speciosum (Hook. f. & Wilson) Mitt. – not accepted
  Ptychomnion (Hook. f. & Wilson) Mitt. – accepted
  Echinodium hispidium (Hook. f. & Wilson) Reichardt – accepted
  Brachymenium speciosum (Hook. f. & Wilson) Steere – accepted
  Calyptrochaeta apiculata (Hook. f. & Wilson) Vitt – accepted
  Achrophyllum dentatum (Hook. f. & Wilson) Vitt & Crosby – accepted
  Acroschisma wilsonii (Hook. f.) A. Jaeger – accepted
  Cerastium fuegianum (Hook. f.) A. Nelson – not accepted
  Henckelia malayana (Hook. f.) A. Weber – accepted
  Chirita lacunosa (Hook. f.) B.L. Burtt – accepted
  Amphibromus nervosus (Hook. f.) Baill. – accepted
  Leptosiphon rosaceus (Hook. f.) Battaglia – accepted – rose linanthus
  Glyceria magellanica (Hook. f.) Benth. – not accepted
  Isoloma hypocyrtiflorum (Hook. f.) Benth. – not accepted
  Stipa rariflora (Hook. f.) Benth. – not accepted
  Bouteloua pilosa (Hook. f.) Benth. ex S. Watson – not accepted
  Danthonia jacquemontii var. minor (Hook. f.) Bor – not accepted
  Euphorbia pseudograntii (Hook. f.) Bruyns – not accepted
  Raddia concinna (Hook. f.) Chase – not accepted
  Alternanthera echinocephala (Hook. f.) Christoph. – accepted – seaurchin joyweed
  Didymocarpus depressus (Hook. f.) Chun – not accepted
  Cucumeropsis edulis (Hook. f.) Cogn. – not accepted
  Rytidosperma buchananii (Hook. f.) Connor & Edgar – accepted
  Rytidosperma gracile (Hook. f.) Connor & Edgar – accepted
  Rytidosperma nudum (Hook. f.) Connor & Edgar – accepted
  Rytidosperma setifolium (Hook. f.) Connor & Edgar – accepted
  Chamaesyce amplexicaulis (Hook. f.) D.G. Burch – not accepted
  Chamaesyce nummularia (Hook. f.) D.G. Burch – not accepted
  Chamaesyce recurva (Hook. f.) D.G. Burch – not accepted
  Chamaesyce viminea (Hook. f.) D.G. Burch – not accepted
  Poa alopecurus ssp. fuegiana (Hook. f.) D.M. Moore & Dogg. – accepted
  Deschampsia parvula (Hook. f.) Desv. – accepted
  Cyathea colensoi (Hook. f.) Domin – accepted
  Atropis magellanica (Hook. f.) E. Desv. – not accepted
  Deschampsia kingii (Hook. f.) E. Desv. – accepted
  Atheropogon affinis (Hook. f.) E. Fourn. – not accepted
  Lysimachia hillebrandii Hook. f. ex A. Gray – accepted – pua-hekili
  Nepenthes burbidgeae Hook. f. ex Burb. – accepted
  Fitzroya Hook. f. ex Lindl. – accepted
  Fitzroya patagonica Hook. f. ex Lindl. – not accepted
  Cleistanthus Hook. f. ex Planch. – accepted
  Garcinia xanthochymus Hook. f. ex T. Anderson – accepted – garcinia
  Cotoneaster microphyllus var. glacialis Hook. f. ex Wenz. – accepted
  Agrostis magellanica var. antartica (Hook. f.) Franch. – not accepted
  Aconogonon campanulatum (Hook. f.) H. Hara – accepted – bellflower smartweed
  Tithymalus griffithii (Hook. f.) H. Hara – not accepted
  Ceropegia decaisneana var. brevicollis (Hook. f.) H. Huber – accepted
  Agrostis canina var. falklandica (Hook. f.) Hack. – not accepted
  Poa fuegiana (Hook. f.) Hack. – not accepted
  Poa fuegiana var. fuegiana (Hook. f.) Hack. – not accepted
  Agrostis canina var. falklandica (Hook. f.) Hack. ex Skottsb. – not accepted
  Ligeria concinna (Hook. f.) Hanst. – not accepted
  Hordeum secalinum var. pubiflorum (Hook. f.) Hauman – not accepted
  Neea buxifolia (Hook. f.) Heimerl – accepted – saltwood
  Iresine leptoclada (Hook. f.) Henrickson & S.D. Sundb. – accepted – Texas shrub
  Notocactus joadii (Hook. f.) Herter – not accepted
  Bobea timonioides (Hook. f.) Hillebr. – accepted – `ahakea
  Ortachne rariflora (Hook. f.) Hughes – accepted
  Bromus setifolius var. pictus (Hook. f.) J.A. Cámara – not accepted
  Prunus africana (Hook. f.) Kalkman – accepted
  Episcia lynchii (Hook. f.) Knuth – not accepted
  Panicularia magellanica (Hook. f.) Kuntze – not accepted
  Polygonum cuspidatum var. compactum (Hook. f.) L.H. Bailey – not accepted
  Agrostis canina var. falklandica (Hook. f.) Macloskie – not accepted
  Deschampsia kingii (Hook. f.) Macloskie – not accepted
  Hierochloe redolens var. magellanica (Hook. f.) Macloskie – not accepted
  Panicularia magellanica (Hook. f.) Macloskie – not accepted
  Sieglingia antarctica (Hook. f.) Macloskie – not accepted
  Hymenosporum flavum (Hook.) F. Muell. – accepted
  Croton scouleri var. macraei (Hook. f.) Müll. Arg. – not accepted
  Tenaxia cumminsii (Hook. f.) N. P. Barker & H. P. Linder – accepted
  Joinvillea plicata (Hook. f.) Newell & B.C. Stone – accepted
  Sinningia concinna (Hook. f.) Nichols. – accepted
  Aglaonema commutatum var. maculatum (Hook. f.) Nicolson – accepted – Philippine evergreen
  Puccinellia magellanica (Hook. f.) Parodi – accepted
  Agrostis magellanica var. antarctica (Hook. f.) Pilg. – not accepted
  Lagarostrobos franklinii (Hook. f.) Quinn – accepted – Huon pine
  Alsophila cunninghamii (Hook. f.) R.M. Tryon – not accepted
  Alsophila smithii (Hook. f.) R.M. Tryon – not accepted
  Pearcea hypocyrtiflora (Hook. f.) Regel – accepted
  Boerhavia coulteri (Hook. f.) S. Watson – accepted – Coulter's spiderling
  Boerhavia coulteri var. coulteri (Hook. f.) S. Watson – accepted – Coulter's spiderling
  Tetradema tuberculatum (Hook. f.) Schltr. – not accepted
  Aira atropurpurea var. magellanica (Hook. f.) Skottsb. – not accepted
  Bromus setifolius var. pictus (Hook. f.) Skottsb. – accepted
  Chamaesyce burmanica (Hook. f.) Soják – not accepted
  Chamaesyce clarkeana (Hook. f.) Soják – not accepted
  Chamaesyce emodi (Hook. f.) Soják – not accepted
  Tithymalus wallichii (Hook. f.) Soják – not accepted
  Trisetum parvulum (Hook. f.) Speg. – not accepted
  Nautilocalyx lynchii (Hook. f.) Sprague – accepted
  Poa antarctica (Hook. f.) Stapf – not accepted
  Cryptochloa concinna (Hook. f.) Swallen – accepted
  Hordeum comosum var. pubiflorum (Hook. f.) Thell. – not accepted
  Vahlodea magellanica (Hook. f.) Tzvelev – not accepted
  Cerastium arvense ssp. fuegianum (Hook. f.) Ugbor. – not accepted – field chickweed
  Besleria lutea var. imrayi (Hook. f.) Urb. – not accepted
  Chamaesyce wightiana (Hook. f.) V.S. Raju & P.N. Rao – not accepted
  Neanotis foetida (Hook. f.) W.H. Lewis – not accepted
  Muehlenbeckia axillaris (Hook. f.) Walp. – accepted – sprawling wirevine
  Paradrymonia erythropus (Hook. f.) Wiehler – accepted
  Paradrymonia maculata (Hook. f.) Wiehler – accepted
  Chionochloa antarctica (Hook. f.) Zotov – accepted
  Chionochloa bromoides (Hook. f.) Zotov – accepted
  Chionochloa conspicua ssp. cunninghamii (Hook. f.) Zotov – accepted
  Critesion pubiflorum (Hook. f.) Á. Löve – not accepted
  Critesion pubiflorum ssp. pubiflorum (Hook. f.) Á. Löve – not accepted
  Goodyera decipiens (Hook.) F.T. Hubb. – not accepted
  Viola vallicola var. major (Hook.) Fabijan – accepted – valley violet
  Hymenophyllum polyanthos var. protrusum (Hook.) Farw. – not accepted
  Moehringia macrophylla (Hook.) Fenzl – accepted – largeleaf sandwort, large-leaved sandwort
  Moehringia macrophyllum (Hook.) Fenzl – not accepted
  Braya americana (Hook.) Fernald – not accepted
  Chamaesaracha grandiflora (Hook.) Fernald – not accepted
  Ribes hirtellum var. saxosum (Hook.) Fernald – not accepted
  Solidago hispida var. lanata (Hook.) Fernald – not accepted – hairy goldenrod
  Vaccinium corymbosum var. albiflorum (Hook.) Fernald – not accepted
  Vaccinium membranaceum var. rigidum (Hook.) Fernald – not accepted
  Viola adunca var. minor (Hook.) Fernald – not accepted
  Puccinellia arctica (Hook.) Fernald & Weath. – accepted – arctic alkaligrass
  Catabrosa pauciflora (Hook.) FRIES – not accepted
  Crantzia capitata (Hook.) Fritsch – not accepted
  Kohleria ocellata (Hook.) Fritsch – not accepted
  Rechsteineria lindleyi (Hook.) Fritsch – not accepted
  Sinningia tubiflora (Hook.) Fritsch – accepted
  Vanhouttea gardneri (Hook.) Fritsch – accepted
  Vanhouttea gardneri var. gardneri (Hook.) Fritsch – accepted
  Eustoma russellianum (Hook.) G. Don – not accepted – showy prairiegentian
  Philodendron fragrantissimum (Hook.) G. Don – accepted – shortstem philodendron
  Solidago arguta ssp. boottii (Hook.) G. Morton – not accepted
  Eurybia sibirica var. gigantea (Hook.) G.L. Nesom – not accepted
  Symphyotrichum patens var. gracile (Hook.) G.L. Nesom – accepted – late purple aster
  Trimorpha elata (Hook.) G.L. Nesom – not accepted
  Trimorpha lonchophylla (Hook.) G.L. Nesom – not accepted
  Saussurea nuda ssp. densa (Hook.) G.W. Douglas – not accepted
  Cereus russelianus (Hook.) Gardner ex Lem. – not accepted
  Glyceria distans var. arctica (Hook.) Gelert ex N.W. Simmonds – not accepted
  Moerckia hibernica (Hook.) Gottsche – accepted
  Elymus subvillosus (Hook.) Gould – not accepted
  Marchesinia mackaii (Hook.) Gray – accepted
  Mylia anomala (Hook.) Gray – accepted
  Mylia cuneifolia (Hook.) Gray – not accepted
  Mylia taylorii (Hook.) Gray – accepted
  Nardia compressa (Hook.) Gray – accepted
  Pallavicinius hibernicus (Hook.) Gray – not accepted
  Agoseris aurantiaca (Hook.) Greene – accepted – orange agoseris, orange-flowered false-dandelion
  Agoseris aurantiaca var. aurantiaca (Hook.) Greene – accepted – orange agoseris, Mill Creek agoseris
  Agoseris hirsuta (Hook.) Greene – not accepted
  Anotites menziesii (Hook.) Greene – not accepted
  Antennaria lanata (Hook.) Greene – accepted – woolly pussytoes
  Antennaria pulcherrima (Hook.) Greene – accepted – showy pussytoes
  Antennaria pulcherrima ssp. pulcherrima (Hook.) Greene – accepted – handsome pussy-toes, showy pussy-toes
  Athysanus pusillus (Hook.) Greene – accepted – common sandweed, dwarf anthysanus
  Castalia elegans (Hook.) Greene – not accepted
  Erigeron elatus (Hook.) Greene – accepted – swamp boreal-daisy
  Eriophyllum integrifolium (Hook.) Greene – not accepted
  Guillenia flavescens (Hook.) Greene – not accepted – yellow mustard
  Microsteris gracilis (Hook.) Greene – accepted – slender phlox
  Microsteris gracilis var. gracilis (Hook.) Greene – accepted – slender phlox
  Nuttallia laevicaulis (Hook.) Greene – not accepted
  Phlox gracilis (Hook.) Greene – not accepted – slender phlox
  Phlox gracilis ssp. gracilis (Hook.) Greene – not accepted – slender phlox, pink microsteris
  Potentilla gordonii (Hook.) Greene – not accepted
  Ptilocalais nutans (Hook.) Greene – not accepted
  Pyrrocoma lanceolata (Hook.) Greene – accepted – lanceleaf goldenweed, lance-leaf goldenweed
  Pyrrocoma lanceolata var. lanceolata (Hook.) Greene – accepted – lanceleaf goldenweed, lance goldenweed, Intermountain goldenweed
  Pyrrocoma uniflora (Hook.) Greene – accepted – plantain goldenweed
  Pyrrocoma uniflora var. uniflora (Hook.) Greene – accepted – plantain goldenweed, singlehead goldenweed
  Radicula curvisiliqua (Hook.) Greene – not accepted
  Tetraneuris linearifolia (Hook.) Greene – accepted – fineleaf fournerved daisy, slimleaf actinea
  Tetraneuris linearifolia var. linearifolia (Hook.) Greene – accepted – fineleaf fournerved daisy
  Trifolium latifolium (Hook.) Greene – accepted – twin clover
  Zauschneria latifolia (Hook.) Greene – not accepted
  Catopsis nitida (Hook.) Griseb. – accepted – Catopsis brillante, Caribbean strap airplant
  Gesneria tubiflora (Hook.) Griseb. – not accepted
  Tithonia speciosa (Hook.) Griseb. – not accepted
  Pleurocladula albescens (Hook.) Grolle – not accepted
  Pleurocladula albescens var. albescens (Hook.) Grolle – not accepted
  Pseudomarsupidium decipiens (Hook.) Grolle – accepted
  Astomum phascoides (Hook.) Grout – not accepted
  Arnoglossum reniforme (Hook.) H. Rob. – accepted – great Indian plantain
  Conardia compacta (Hook.) H. Rob. – accepted – compact conardia moss
  Homalothecium leskeoides (Hook.) H. Rob. – not accepted
  Delphinium burkei var. distichiflorum (Hook.) H. St. John – not accepted
  Delphinium strictum var. distichiflorum (Hook.) H. St. John – not accepted
  Gilia gracilis var. humilior (Hook.) H. St. John – not accepted
  Trachycarpus fortunei (Hook.) H. Wendl. – accepted – Chinese windmill palm
  Pyrola asarifolia ssp. bracteata (Hook.) Haber – accepted – pink wintergreen, bog wintergreen, long-bracted wintergreen
  Calamovilfa longifolia (Hook.) Hack. ex Scribn. & Southw. – accepted – prairie sandreed
  Calamovilfa longifolia var. longifolia (Hook.) Hack. ex Scribn. & Southw. – accepted – prairie sandreed, prairie sand-reed
  Hoodia cactiformis (Hook.) Halda – not accepted
  Kalmia polifolia var. microphylla (Hook.) Hall – not accepted
  Besleria leucostoma (Hook.) Hanst. – accepted
  Collandra aureonitens (Hook.) Hanst. – not accepted
  Columnea major (Hook.) Hanst. – not accepted
  Columnea minor (Hook.) Hanst. – accepted
  Columnea repens (Hook.) Hanst. – accepted
  Cryptoloma pictum (Hook.) Hanst. – not accepted
  Cryptoloma triflorum (Hook.) Hanst. – not accepted
  Cyrtodeira cupreata (Hook.) Hanst. – not accepted
  Dolichodeira tubiflora (Hook.) Hanst. – not accepted
  Episcia bractescens (Hook.) Hanst. – not accepted
  Episcia cupreata (Hook.) Hanst. – accepted – flame violet
  Episcia picta (Hook.) Hanst. – not accepted
  Kohleria picta (Hook.) Hanst. – not accepted
  Kohleria seemannii (Hook.) Hanst. – not accepted
  Paradrymonia picta (Hook.) Hanst. – not accepted
  Physodeira bicolor (Hook.) Hanst. – not accepted
  Plectopoma fimbriatum (Hook.) Hanst. – not accepted
  Pterygoloma repens (Hook.) Hanst. – not accepted
  Achimenes fimbriata (Hook.) Hend. – not accepted
  Zerna vulgaris (Hook.) Henrard – not accepted
  Gossypianthus lanuginosus var. tenuiflorus (Hook.) Henrickson – accepted – woolly cottonflower
  Notholaena integerrima (Hook.) Hevly – not accepted
  Henckelia rexii (Hook.) Heynh. – not accepted
  Houttea tubiflora (Hook.) Heynh. – not accepted
  Ceratopteris pteridoides (Hook.) Hieron. – accepted – floating antlerfern
  Bromopsis vulgaris (Hook.) Holub – not accepted
  Gesneria douglasii var. verticillata (Hook.) Hook. – not accepted
  Chaenactis douglasii (Hook.) Hook. & Arn. – accepted – Douglas' dustymaiden, Douglas dustymaiden, dusty maiden, dusty-maiden, Douglas' pincushion
  Chaenactis douglasii var. douglasii (Hook.) Hook. & Arn. – accepted – Douglas' dustymaiden, dusty-maiden
  Layia glandulosa (Hook.) Hook. & Arn. – accepted – whitedaisy tidytips, white tidytips
  Layia glandulosa ssp. glandulosa (Hook.) Hook. & Arn. – not accepted – whitedaisy tidytips
  Dicksonia menziesii (Hook.) Hook. & Baker – not accepted
  Frullania lobulata (Hook.) Hook. & Nees – accepted
  Meesia demissa (Hook.) Hoppe & Hornsch. – not accepted
  Ceropegia elegans var. gardneri (Hook.) Huber – accepted
  Gymnomitrion lyellii (Hook.) Huebener – not accepted
  Artemisia borealis ssp. purshii (Hook.) Hultén – not accepted
  Betula papyrifera ssp. occidentalis (Hook.) Hultén – not accepted
  Braya purpurascens ssp. pilosa (Hook.) Hultén – not accepted
  Festuca rubra ssp. richardsonii (Hook.) Hultén – not accepted
  Honckenya peploides ssp. major (Hook.) Hultén – accepted – seaside sandplant
  Melandrium drummondii (Hook.) Hultén – not accepted
  Phlox sibirica ssp. richardsonii (Hook.) Hultén – not accepted
  Phyllodoce aleutica ssp. glanduliflora (Hook.) Hultén – not accepted
  Polypodium vulgare ssp. occidentale (Hook.) Hultén – not accepted
  Salix glauca ssp. acutifolia (Hook.) Hultén – not accepted
  Saussurea nuda var. densa (Hook.) Hultén – not accepted
  Trientalis borealis ssp. latifolia (Hook.) Hultén – not accepted – broadleaf starflower
  Vahlodea latifolia (Hook.) Hultén – not accepted
  Astragalus australis var. glabriusculus (Hook.) Isely – accepted – aboriginal milkvetch
  Doryopteris decipiens (Hook.) J. Sm. – accepted – triangleleaf lipfern
  Polystichum tsus-simense (Hook.) J. Sm. – not accepted – Tsussima hollyfern, Korean rockfern
  Polystichum tsussimense (Hook.) J. Sm. – not accepted – Korean rockfern
  Schizocaena alternans (Hook.) J. Sm. – not accepted
  Calandrinia ciliata var. menziesii (Hook.) J.F. Macbr. – not accepted
  Hypericum formosum var. scouleri (Hook.) J.M. Coult. – not accepted
  Chaerophyllum procumbens var. tainturieri (Hook.) J.M. Coult. & Rose – not accepted
  Pteryxia terebinthina (Hook.) J.M. Coult. & Rose – accepted – smoothshore springparsley, Terebinth springparsley, turpentine wavewing
  Pteryxia terebinthina var. terebinthina (Hook.) J.M. Coult. & Rose – accepted – turpentine wavewing
  Ligusticum verticillatum (Hook.) J.M. Coult. & Rose ex Rose – accepted – northern licorice-root
  Alsophila borbonica var. latifolia (Hook.) J.P. Roux – not accepted
  Haplodontium macrocarpum (Hook.) J.R. Spence – accepted
  Plagiobryoides cellularis (Hook.) J.R. Spence – accepted
  Trochophyllohypnum circinale (Hook.) Jan Kucera & Ignatov – accepted
  Pyrola asarifolia var. bracteata (Hook.) Jeps. – not accepted
  Cladopodiella francisci (Hook.) Jřrg. – not accepted
  Leiocolea bantriensis (Hook.) Jřrg. – not accepted
  Tetrapanax papyrifer (Hook.) K. Koch – accepted – ricepaper plant, rice-paper plant, Chinese rice-paper plant
  Tetrapanax papyriferus (Hook.) K. Koch – not accepted – ricepaper plant, rice-paper plant, Chinese rice-paper plant
  Echinocereus pentlandii (Hook.) K. Schum. – not accepted
  Oxytropis richardsonii (Hook.) K. Schum. – not accepted
  Corymbia citriodora (Hook.) K.D. Hill & L.A.S. Johnson – accepted – lemonscented gum
  Baeria californica (Hook.) K.L. Chambers – not accepted
  Eustoma exaltatum ssp. russellianum (Hook.) Kartesz – accepted – showy prairie gentian
  Ageratina occidentalis (Hook.) King & H. Rob. – accepted – western snakeroot, western eupatorium, western joepyeweed
  Sterigmanthe bojeri (Hook.) Klotzsch & Garcke – not accepted
  Heterogemma capitata (Hook.) Konstant. & Vilnet – accepted
  Actinea richardsonii (Hook.) Kuntze – not accepted
  Aster pinnatifidus (Hook.) Kuntze – not accepted
  Coleosanthus grandiflorus (Hook.) Kuntze – not accepted
  Columnea capitata (Hook.) Kuntze – not accepted
  Gesneria auriculata (Hook.) Kuntze – not accepted
  Gesneria calycosa (Hook.) Kuntze – accepted
  Lacinaria punctata (Hook.) Kuntze – not accepted
  Nummularia radicans (Hook.) Kuntze – not accepted
  Rechsteineria cochlearis (Hook.) Kuntze – not accepted
  Rechsteineria elliptica (Hook.) Kuntze – not accepted
  Therofon richardsonii (Hook.) Kuntze – not accepted
  Trichosporum javanicum (Hook.) Kuntze – not accepted
  Trichosporum lobbianum (Hook.) Kuntze – not accepted
  Trichosporum speciosum (Hook.) Kuntze – not accepted
  Trichosporum tricolor (Hook.) Kuntze – not accepted
  Glyceria maritima var. arctica (Hook.) Kurtz – not accepted
  Tiarella trifoliata var. unifoliata (Hook.) Kurtz – accepted – oneleaf foamflower
  Leptoscyphus horizontalis (Hook.) Kühnem. – accepted
  Mesoptychia bantriensis (Hook.) L. Söderstr. & Vána – accepted
  Mesoptychia bantriensis ssp. bantriensis (Hook.) L. Söderstr. & Vána – accepted
  Odontoschisma francisci (Hook.) L. Söderstr. & Vána – accepted
  Ericameria viscidiflora (Hook.) L.C. Anderson – not accepted
  Lantana camara var. mutabilis (Hook.) L.H. Bailey – not accepted
  Kohleria inaequalis var. ocellata (Hook.) L.P. Kvist & L.E. Skog – accepted
  Echinopsis cinnabarina (Hook.) Labour. – accepted
  Poa flexuosa var. vivipara (Hook.) Lange – not accepted
  Vicia nigricans ssp. gigantea (Hook.) Lassetter & C.R. Gunn – not accepted – giant vetch
  Steetzia lyellii (Hook.) Lehm. – not accepted
  Collandra picta (Hook.) Lem. – not accepted
  Dircaea bulbosa (Hook.) Lem. – not accepted
  Dircaea picta (Hook.) Lem. – not accepted
  Desmatodon suberectus (Hook.) Limpr. – not accepted
  Oligotrichum glabratum (Hook.) Lindb. – not accepted
  Pallavicinia flotoviana var. hibernica (Hook.) Lindb. – not accepted
  Plagiobryum demissum (Hook.) Lindb. – accepted
  Thuidium crispifolium (Hook.) Lindb. – not accepted
  Molendoa hornschuchiana (Hook.) Lindb. ex Limpr. – accepted – Hornschuch's molendoa moss
  Lepidozia microphylla (Hook.) Lindenb. – accepted
  Lepidozia pendulina (Hook.) Lindenb. – accepted
  Plagiochila gigantea (Hook.) Lindenb. – accepted
  Plagiochila gigantea var. gigantea (Hook.) Lindenb. – accepted
  Plagiochila ramosissima (Hook.) Lindenb. – accepted
  Streptocarpus rexii (Hook.) Lindley – accepted
  Rhynchostegiella compacta (Hook.) Loeske – not accepted
  Athernotus longifolius (Hook.) Lunell – not accepted
  Forasaccus breviaristatus (Hook.) Lunell – not accepted
  Zeia dasystachyum (Hook.) Lunell – not accepted
  Terrellia virginica var. submutica (Hook.) Lunell ex Hitchc. – not accepted
  Heterophyllium affine (Hook.) M. Fleisch. – accepted
  Viola praemorsa var. major (Hook.) M. Peck – not accepted
  Astragalus americanus (Hook.) M.E. Jones – accepted – American milkvetch, American milk-vetch, astragale d'Amérique
  Astragalus flexuosus var. elongatus (Hook.) M.E. Jones – not accepted
  Eriogonum umbellatum var. tolmieanum (Hook.) M.E. Jones – not accepted
  Viola porterana var. major (Hook.) M.S. Baker – not accepted
  Viola praemorsa ssp. major (Hook.) M.S. Baker ex M. Peck – not accepted
  Lophozia capitata (Hook.) Macoun – not accepted
  Brachymenium erectum (Hook.) Margad. – accepted – erect brachymenium moss
  Lomatium simplex var. leptophyllum (Hook.) Mathias – accepted – slenderleaf lomatium
  Culcita coniifolia (Hook.) Maxon – accepted
  Cochlidium rostratum (Hook.) Maxon ex C. Chr. – accepted – beaked snailfern
  Trifolium howellii var. latifolium (Hook.) McDermott – not accepted
  Guilleminea lanuginosa var. rigidiflora (Hook.) Mears – not accepted
  Guilleminea lanuginosa var. tenuiflora (Hook.) Mears – not accepted
  Trichosporum miniatum var. cordifolium (Hook.) Merr. – not accepted
  Cheilanthes californica (Hook.) Mett. – not accepted
  Gymnocalycium mackieanum (Hook.) Metzing, Mereg. & R. Kiesling – not accepted
  Cheilanthes integerrima (Hook.) Mickel – not accepted
  Adelanthus falcatus (Hook.) Mitt. – accepted
  Breutelia affinis (Hook.) Mitt. – accepted
  Leptoscyphus cuneifolius (Hook.) Mitt. – accepted
  Leptoscyphus cuneifolius ssp. cuneifolius (Hook.) Mitt. – accepted
  Philonotis falcata (Hook.) Mitt. – accepted
  Podomitrium phyllanthus (Hook.) Mitt. – accepted
  Stereodon circinalis (Hook.) Mitt. – not accepted
  Stereophyllum radiculosum (Hook.) Mitt. – accepted
  Temnoma pulchellum (Hook.) Mitt. – accepted
  Temnoma quadripartitum (Hook.) Mitt. – accepted
  Temnoma quadripartitum var. quadripartitum (Hook.) Mitt. – accepted
  Atriplex gmelini var. zosterifolia (Hook.) Moq. – not accepted
  Atriplex gmelinii var. zosterifolia (Hook.) Moq. – not accepted
  Froelichia gracilis (Hook.) Moq. – accepted – slender snake-cotton, slender snakecotton
  Grayia spinosa (Hook.) Moq. – accepted – spiny hopsage
  Suaeda calceoliformis (Hook.) Moq. – accepted – Paiuteweed, western seepweed, Pursh seepweed
  Deschampsia elongata (Hook.) Munro – accepted – slender hairgrass
  Cephaloziella turneri (Hook.) Müll. Frib. – accepted
  Hypnum compactum (Hook.) Müll. Hal. – not accepted
  Mnium menziesii (Hook.) Müll. Hal. – not accepted
  Epilobium canum var. latifolium (Hook.) N.H. Holmgren & P.K. Holmgren – not accepted
  Blyttia lyellii var. hibernica (Hook.) Nees – not accepted
  Dendroceros crispatus (Hook.) Nees – accepted
  Dendroceros crispatus var. crispatus (Hook.) Nees – accepted
  Diplolaena lyellii var. hibernica (Hook.) Nees – not accepted
  Mastigophora woodsii (Hook.) Nees – accepted
  Symphyogyna hymenophyllum (Hook.) Nees & Mont. – accepted
  Symphyogyna hymenophyllum var. hymenophyllum (Hook.) Nees & Mont. – accepted
  Trimorpha lonchophylla var. lonchophylla (Hook.) Nesom – not accepted – spearleaf fleabane
  Episcia cupreata var. viridifolia (Hook.) Nichols. – not accepted
  Abies lasiocarpa (Hook.) Nutt. – accepted – subalpine fir, balsam fir, white balsam, Rocky Mountain fir, western balsam fir
  Abies lasiocarpa var. lasiocarpa (Hook.) Nutt. – accepted – subalpine fir
  Balsamorhiza hookeri (Hook.) Nutt. – accepted – Hooker's balsamroot, hairy balsamroot, rabbithead balsamroot, neglected balsamroot
  Balsamorhiza hookeri var. hookeri (Hook.) Nutt. – not accepted – Hooker's balsamroot
  Brickellia grandiflora (Hook.) Nutt. – accepted – tasselflower brickellbush, mountain brickellbush, tasselflower brickellia
  Ceanothus cuneatus (Hook.) Nutt. – accepted – buckbrush
  Ceanothus cuneatus ssp. cuneatus (Hook.) Nutt. – not accepted – coast buckbrush
  Ceanothus cuneatus var. cuneatus (Hook.) Nutt. – accepted – buckbrush
  Chrysothamnus viscidiflorus (Hook.) Nutt. – accepted – yellow rabbitbrush, Douglas rabbitbrush, green rabbitbrush, Douglas' rabbitbrush
  Chrysothamnus viscidiflorus ssp. viscidiflorus (Hook.) Nutt. – accepted – yellow rabbitbrush, green rabbitbrush, Douglas' rabbitbrush
  Chrysothamnus viscidiflorus ssp. viscidiflorus var. viscidiflorus (Hook.) Nutt. – not accepted – yellow rabbitbrush, green rabbitbrush, Douglas' rabbitbrush
  Chrysothamnus viscidiflorus var. viscidiflorus (Hook.) Nutt. – not accepted – yellow rabbitbrush
  Erigeron filifolius (Hook.) Nutt. – accepted – threadleaf fleabane, threadleaf daisy
  Erigeron filifolius var. filifolius (Hook.) Nutt. – not accepted – threadleaf fleabane, threadleaf daisy
  Lithophragma parviflorum (Hook.) Nutt. – accepted – smallflower woodland-star
  Lithophragma parviflorum var. parviflorum (Hook.) Nutt. – not accepted – smallflower woodland-star
  Stephanomeria minor (Hook.) Nutt. – not accepted – lesser wirelettuce
  Stephanomeria minor var. minor (Hook.) Nutt. – not accepted – narrowleaf wirelettuce
  Aspidotis californica (Hook.) Nutt. ex Copel. – accepted – California lacefern
  Nasturtium curvisiliqua (Hook.) Nutt. ex Torr. & A. Gray – not accepted
  Balsamorhiza X terebinthacea (Hook.) Nutt. (pro sp.) – accepted – balsamroot
  Paysonia grandiflora (Hook.) O'Kane & Al-Shehbaz – accepted – bigflower bladderpod
  Physaria gracilis (Hook.) O'Kane & Al-Shehbaz – accepted – spreading bladderpod
  Physaria gracilis ssp. gracilis (Hook.) O'Kane & Al-Shehbaz – accepted – spreading bladderpod
  Cardamine pratensis ssp. angustifolia (Hook.) O.E. Schulz – not accepted
  Rosulabryum andicola (Hook.) Ochyra – accepted
  Brachyloma pictum (Hook.) Oerst. – not accepted
  Codonaraphia calycosa (Hook.) Oerst. – not accepted
  Copiapoa streptocaulon (Hook.) Oosten – not accepted
  Rhodanthe chlorocephala ssp. rosea (Hook.) P. Wilson – accepted
  Epilobium canum ssp. latifolium (Hook.) P.H. Raven – accepted – hummingbird trumpet
  Tiarella trifoliata ssp. unifoliata (Hook.) P.M. Kern – not accepted
  Tirucalia alata (Hook.) P.V. Heath – not accepted
  Solidago arguta var. boottii (Hook.) Palmer & Steyerm. – accepted – Boott's goldenrod
  Gymnocalycium reductum var. leeanum (Hook.) Papsch – accepted
  Caulanthus flavescens (Hook.) Payson – accepted – yellow mustard
  Mimulus guttatus ssp. scouleri (Hook.) Pennell – not accepted
  Synthyris missurica ssp. major (Hook.) Pennell – accepted
  Synthyris missurica var. major (Hook.) Pennell ex R.J. Davis – not accepted
  Disporum smithii (Hook.) Piper – not accepted – largeflower fairybells
  Erigeron linearis (Hook.) Piper – accepted – desert yellow fleabane, linearleaf daisy
  Eriogonum umbellatum ssp. majus (Hook.) Piper – not accepted
  Peramium decipiens (Hook.) Piper – not accepted
  Vicia americana ssp. minor (Hook.) Piper & Beattie – accepted – mat vetch, purple vetch
  Isoloma pictum var. minus-hirsuta (Hook.) Planch. – not accepted
  Larryleachia cactiformis (Hook.) Plowes – accepted
  Aster major (Hook.) Porter – not accepted
  Ceanothus X lobbianus Hook. (pro. sp.) – accepted – lobbian ceanothus
  Ceanothus X veitchianus Hook. (pro. sp.) – accepted – Veitch's ceanothus
  Lepidozia cupressina ssp. pinnata (Hook.) Pócs – accepted
  Encephalartos trispinosus (Hook.) R.A. Dyer – accepted
  Pfaffia grandiflora (Hook.) R.E. Fr. – accepted – jojo
  Tortula wilsonii (Hook.) R.H. Zander – accepted
  Anomylia cuneifolia (Hook.) R.M. Schust. – not accepted
  Dendromastigophora flagellifera (Hook.) R.M. Schust. – accepted
  Leiomitra lanata (Hook.) R.M. Schust. – accepted
  Lepidogyna menziesii (Hook.) R.M. Schust. – accepted
  Alsophila aneitensis (Hook.) R.M. Tryon – not accepted
  Alsophila kirkii (Hook.) R.M. Tryon – not accepted
  Alsophila manniana (Hook.) R.M. Tryon – not accepted
  Alsophila welwitschii (Hook.) R.M. Tryon – not accepted
  Cnemidaria lindenii (Hook.) R.M. Tryon – not accepted
  Cyathea caracasana var. chimborazensis (Hook.) R.M. Tryon – accepted
  Cyathea petiolata (Hook.) R.M. Tryon – accepted
  Doryopteris decora var. decipiens (Hook.) R.M. Tryon – not accepted
  Sphaeropteris alternans (Hook.) R.M. Tryon – not accepted
  Sphaeropteris assimilis (Hook.) R.M. Tryon – not accepted
  Sphaeropteris aterrima (Hook.) R.M. Tryon – not accepted
  Sphaeropteris brunoniana (Hook.) R.M. Tryon – not accepted
  Sphaeropteris crinita (Hook.) R.M. Tryon – not accepted
  Trichipteris phegopteroides (Hook.) R.M. Tryon – not accepted
  Grammitis rostrata (Hook.) R.M. Tryon & A.F. Tryon – not accepted
  Elymus virginicus f. submuticus (Hook.) R.W. Pohl – not accepted
  Sporobolus cryptandrus var. fuscicola (Hook.) R.W. Pohl – not accepted
  Caularthron bicornutum (Hook.) Raf. – accepted
  Hemieva ranunculifolia (Hook.) Raf. – not accepted
  Mesadenia reniformis (Hook.) Raf. – not accepted
  Peritoma lutea (Hook.) Raf. – accepted – yellow spiderflower
  Tulisma verticillata (Hook.) Raf. – not accepted
  Tumalis bojeri (Hook.) Raf. – not accepted
  Polystachya foliosa (Hook.) Rchb. f. – accepted – lesser yellowspike orchid
  Isoloma pictum (Hook.) Regel – not accepted
  Kohleria triflora (Hook.) Regel – not accepted
  Salisia pallidiflora (Hook.) Regel – not accepted
  Tydaea ocellata (Hook.) Regel – not accepted
  Kalmia polifolia var. microphylla (Hook.) Rehder – not accepted
  Claopodium crispifolium (Hook.) Renauld & Cardot – accepted
  Virgulus patens var. gracilis (Hook.) Reveal & Keener – not accepted
  Halimolobos mollis (Hook.) Rollins – not accepted – soft fissurewort
  Streptanthus maculatus ssp. obtusifolius (Hook.) Rollins – not accepted – clasping jewelflower
  Manfreda maculosa (Hook.) Rose – accepted – spice lily, Amole de culebra
  Raimannia drummondii (Hook.) Rose – not accepted
  Boykinia richardsonii (Hook.) Rothr. – accepted – Alaska boykinia, bear flower, Richardson's brookfoam
  Acrolasia albicaulis (Hook.) Rydb. – not accepted
  Astragalus aboriginorum var. glabriusculus (Hook.) Rydb. – not accepted
  Atelophragma elegans (Hook.) Rydb. – not accepted
  Azaleastrum albiflorum (Hook.) Rydb. – not accepted
  Batidophaca lotiflora (Hook.) Rydb. – not accepted
  Batidophaca lotiflorus (Hook.) Rydb. – not accepted
  Diholcos bisulcatus (Hook.) Rydb. – not accepted
  Erigeron minor (Hook.) Rydb. – not accepted
  Leucophysalis grandiflora (Hook.) Rydb. – accepted – large false groundcherry
  Mentha glabrior (Hook.) Rydb. – not accepted
  Nemexia lasioneura (Hook.) Rydb. – not accepted
  Pectiantia pentandra (Hook.) Rydb. – not accepted
  Saussurea densa (Hook.) Rydb. – not accepted – clustered sawwort
  Wahlbergella drummondii (Hook.) Rydb. – not accepted
  Phaca americana (Hook.) Rydb. ex Britton & A. Br. – not accepted
  Phyllodoce X intermedia (Hook.) Rydb. (pro sp.) – accepted – hybrid mountainheath
  Eriogonum microthecum ssp. laxiflorum (Hook.) S. Stokes – not accepted
  Astragalus frigidus var. americanus (Hook.) S. Watson – not accepted
  Braya alpina var. americana (Hook.) S. Watson – not accepted
  Chenopodium rubrum var. humile (Hook.) S. Watson – accepted – marshland goosefoot
  Lesquerella gracilis (Hook.) S. Watson – not accepted – lax bladderpod, spreading bladderpod
  Lesquerella gracilis ssp. gracilis (Hook.) S. Watson – not accepted – spreading bladderpod
  Lesquerella grandiflora (Hook.) S. Watson – not accepted – bigflower bladderpod
  Lychnis drummondii (Hook.) S. Watson – not accepted
  Rubus spectabilis var. menziesii (Hook.) S. Watson – not accepted
  Thelypodium flavescens (Hook.) S. Watson – not accepted
  Trifolium tridentatum var. obtusiflorum (Hook.) S. Watson – not accepted
  Chiastocaulon conjugatum (Hook.) S.D.F. Patzak, M.A.M. Renner, Schäf.-Verw. & Heinrichs – accepted
  Blennosperma nanum (Hook.) S.F. Blake – accepted – common stickyseed
  Blennosperma nanum var. nanum (Hook.) S.F. Blake – accepted – common stickyseed
  Astragalus adsurgens ssp. robustior (Hook.) S.L. Welsh – not accepted
  Oxytropis campestris var. minor (Hook.) S.L. Welsh – accepted – field locoweed
  Phlox sibirica var. richardsonii (Hook.) S.L. Welsh – not accepted
  Echinopsis pentlandii (Hook.) Salm-Dyck ex A. Dietr. – accepted
  Betula papyrifera var. occidentalis (Hook.) Sarg. – not accepted
  Microseris laciniata (Hook.) Sch. Bip. – accepted – cutleaf silverpuffs
  Microseris laciniata ssp. laciniata (Hook.) Sch. Bip. – accepted – cutleaf silverpuffs
  Microseris nutans (Hook.) Sch. Bip. – accepted – nodding microseris, nodding silverpuffs
  Microseris nutans ssp. nutans (Hook.) Sch. Bip. – not accepted – nodding silverpuffs
  Scorzonella laciniata (Hook.) Sch. Bip. – not accepted
  Anastrepta orcadensis (Hook.) Schiffn. – accepted
  Drepanolejeunea hamatifolia (Hook.) Schiffn. – accepted
  Heteroscyphus coalitus (Hook.) Schiffn. – accepted
  Heteroscyphus coalitus var. coalitus (Hook.) Schiffn. – accepted
  Heteroscyphus sinuosus (Hook.) Schiffn. – accepted
  Prionolobus turneri (Hook.) Schiffn. – not accepted
  Petunia integrifolia (Hook.) Schinz & Thell. – accepted – violetflower petunia
  Schlotheimia rugifolia (Hook.) Schwägr. – accepted – ruggedleaf schlotheimia moss
  Poa arctica f. vivipara (Hook.) Scoggan – not accepted
  Agropyron dasystachyum (Hook.) Scribn. – not accepted
  Agropyron dasystachyum var. dasystachyum (Hook.) Scribn. – not accepted
  Agropyron dasystachyum var. subvillosum (Hook.) Scribn. & J.G. Sm. – not accepted
  Deschampsia atropurpurea var. latifolia (Hook.) Scribn. ex Macoun – not accepted
  Heterotheca villosa var. horrida (Hook.) Semple – not accepted
  Heterotheca villosa var. minor (Hook.) Semple – accepted – hairy false goldenaster
  Bergia texana (Hook.) Seub. ex Walp. – accepted – Texas bergia
  Solidago bicolor var. lanata (Hook.) Seymour – not accepted
  Bromus richardsonii var. pallidus (Hook.) Shear – not accepted
  Bromus vulgaris (Hook.) Shear – accepted – Columbia brome
  Machaeranthera pinnatifida (Hook.) Shinners – not accepted – lacy tansy-aster, spiny goldenweed, lacy tansyaster, cutleaf goldenweed, pinnate machaeranthera
  Machaeranthera pinnatifida ssp. pinnatifida (Hook.) Shinners – not accepted – lacy tansy-aster, lacy tansyaster
  Machaeranthera pinnatifida ssp. pinnatifida var. pinnatifida (Hook.) Shinners – not accepted – lacy tansy-aster, spiny goldenweed, lacy tansyaster
  Machaeranthera pinnatifida var. pinnatifida (Hook.) Shinners – not accepted – lacy tansyaster
  Polianthes maculosa (Hook.) Shinners – not accepted
  Cyathea dregei var. burkei (Hook.) Sim – accepted
  Ampelothamnus phillyreifolius (Hook.) Small – not accepted
  Berlandiera betonicifolia (Hook.) Small – not accepted
  Castelaria nicholsonii (Hook.) Small – not accepted
  Cathartolinum berlandieri (Hook.) Small – not accepted
  Cathartolinum multicaule (Hook.) Small – not accepted
  Geranium glabratum (Hook.) Small – not accepted
  Hesperoxalis trilliifolia (Hook.) Small – not accepted
  Micranthes integrifolia (Hook.) Small – accepted – wholeleaf saxifrage
  Micranthes reflexa (Hook.) Small – accepted – reflexed saxifrage
  Berlandiera X betonicifolia (Hook.) Small (pro sp.) – accepted – Texas greeneyes, berlandiera
  Eriophyllum lanatum var. integrifolium (Hook.) Smiley – accepted – common woolly sunflower, wholeleaf eriophyllum
  Elymus submuticus (Hook.) Smyth – not accepted – Virginia wildrye
  Nautilocalyx pictus (Hook.) Sprague – accepted
  Barbula indica (Hook.) Spreng. – accepted
  Barbula indica var. indica (Hook.) Spreng. – accepted
  Hygrobiella laxifolia (Hook.) Spruce – accepted
  Pleuroclada albescens (Hook.) Spruce – not accepted
  Pleuroclada albescens var. albescens (Hook.) Spruce – not accepted
  Oxytropis spicata (Hook.) Standl. – not accepted
  Alloplectus aureonitens (Hook.) Stearn – not accepted
  Leucolepis menziesii (Hook.) Steere – not accepted
  Pleuropus leskeoides (Hook.) Steere – not accepted
  Anastrophyllum donianum (Hook.) Steph. – not accepted
  Anastrophyllum donnianum (Hook.) Steph. – accepted
  Calycularia hibernica (Hook.) Steph. – not accepted
  Lophozia bantriensis (Hook.) Steph. – not accepted
  Mastigophora flagellifera (Hook.) Steph. – not accepted
  Schistochila berteroana (Hook.) Steph. – accepted
  Solenostoma sphaerocarpum (Hook.) Steph. – accepted
  Solenostoma sphearocarpa (Hook.) Steph. – not accepted
  Cnemidaria apiculata (Hook.) Stolze – not accepted
  Tritomaria capitata (Hook.) Stotler & Crand.-Stotl. – not accepted
  Hollia lyellii (Hook.) Sull. – not accepted
  Adiantopsis pedata (Hook.) T. Moore – accepted
  Lejeunea echinata (Hook.) Taylor ex Gottsche – not accepted
  Bromus breviaristatus (Hook.) Thurb. ex Torr. – not accepted
  Sarcobatus vermiculatus (Hook.) Torr. – accepted – black greasewood, greasewood
  Sarcobatus vermiculatus var. vermiculatus (Hook.) Torr. – not accepted – greasewood
  Trientalis europaea var. latifolia (Hook.) Torr. – not accepted
  Berlandiera texana var. bentonicifolia (Hook.) Torr. & A. Gray – not accepted
  Berlandiera texana var. betonicifolia (Hook.) Torr. & A. Gray – not accepted
  Coreopsis grandiflora var. longipes (Hook.) Torr. & A. Gray – not accepted – largeflower tickseed
  Cymopterus terebinthinus (Hook.) Torr. & A. Gray – not accepted
  Elatine texana (Hook.) Torr. & A. Gray – not accepted
  Haplopappus lanceolatus (Hook.) Torr. & A. Gray – not accepted
  Haplopappus lanceolatus var. lanceolatus (Hook.) Torr. & A. Gray – not accepted
  Haplopappus uniflorus (Hook.) Torr. & A. Gray – not accepted
  Haplopappus uniflorus var. uniflorus (Hook.) Torr. & A. Gray – not accepted
  Ivesia gordanii (Hook.) Torr. & A. Gray – not accepted
  Ivesia gordonii (Hook.) Torr. & A. Gray – accepted – Gordon's ivesia
  Ivesia gordonii var. gordonii (Hook.) Torr. & A. Gray – accepted – Gordon's ivesia
  Linum rigidum var. berlandieri (Hook.) Torr. & A. Gray – not accepted
  Mentzelia albicaulis var. albicaulis (Hook.) Torr. & A. Gray – not accepted – whitestem blazingstar
  Mentzelia laevicaulis (Hook.) Torr. & A. Gray – accepted – smoothstem blazingstar, blazingstar mentzelia
  Mentzelia laevicaulis var. laevicaulis (Hook.) Torr. & A. Gray – accepted – smoothstem blazingstar
  Prunus glandulosa (Hook.) Torr. & A. Gray – not accepted
  Ranunculus reptans var. intermedius (Hook.) Torr. & A. Gray – not accepted
  Corytholoma douglasii var. verticillatum (Hook.) Toursark. – not accepted
  Ceanothus dentatus var. floribundus (Hook.) Trel. – not accepted
  Acrobolbus saccatus (Hook.) Trevis. – accepted
  Porella crispata (Hook.) Trevis. – accepted
  Schistochila nobilis (Hook.) Trevis. – accepted
  Schistochila pinnatifolia (Hook.) Trevis. – accepted
  Glandularia incisa (Hook.) Tronc. – accepted – crisped mock vervain
  Prosartes smithii (Hook.) Utech, Shinwari & Kawano – accepted – largeflower fairybells
  Ipomopsis congesta (Hook.) V.E. Grant – accepted – ballhead skyrocket, ball-head skyrocket, ballhead gilia, ballhead ipomopsis
  Ipomopsis congesta ssp. congesta (Hook.) V.E. Grant – accepted – ball-head skyrocket, ballhead gilia, ballhead ipomopsis
  Heterotheca villosa var. hispida (Hook.) V.L. Harms – not accepted – bristly hairy goldaster
  Agropyron dasystachyum (Hook.) Vasey – not accepted
  Deschampsia latifolia (Hook.) Vasey – not accepted
  Poa nervosa (Hook.) Vasey – accepted – Wheeler bluegrass
  Poa nervosa var. nervosa (Hook.) Vasey – not accepted – nerved bluegrass
  Isoloma bogotense var. ocellatum (Hook.) Voss – not accepted
  Fuscocephaloziopsis albescens (Hook.) Vána & L. Söderstr. – accepted
  Fuscocephaloziopsis albescens var. albescens (Hook.) Vána & L. Söderstr. – accepted
  Askellia elegans (Hook.) W.A. Weber – not accepted
  Chlorocrepis albiflora (Hook.) W.A. Weber – not accepted
  Chlorocrepis tristis ssp. gracilis (Hook.) W.A. Weber – not accepted
  Scabrethia scabra (Hook.) W.A. Weber – accepted – badlands mule-ears
  Scabrethia scabra ssp. scabra (Hook.) W.A. Weber – accepted – badlands mule-ears
  Packera cana (Hook.) W.A. Weber & Á. Löve – accepted – woolly groundsel
  Weissia rostellata var. phascoides (Hook.) W.D. Reese & B.A.E. Lemmon – not accepted
  Prosthechea pygmaea (Hook.) W.E. Higgins – accepted – dwarf butterfly orchid
  Cheilanthes decipiens (Hook.) W.H. Wagner – not accepted
  Fabronia ciliaris var. polycarpa (Hook.) W.R. Buck – not accepted
  Bromus inermis ssp. pumpellianus var. purpurascens (Hook.) Wagnon – not accepted – pumpelly brome
  Bromus inermis var. purpurascens (Hook.) Wagnon – not accepted
  Pityrogramma calomelanos var. aureoflava (Hook.) Weath. ex L.H. Bailey – not accepted
  Acer glabrum ssp. douglasii (Hook.) Wesm. – not accepted
  Erysimum menziesii (Hook.) Wettst. – accepted – Menzies' wallflower
  Erysimum menziesii ssp. menziesii (Hook.) Wettst. – not accepted – Menzies' wallflower
  Tiarella trifoliata var. laciniata (Hook.) Wheelock – accepted – threeleaf foamflower
  Corytoplectus capitatus (Hook.) Wiehler – accepted
  Dalbergaria aureonitens (Hook.) Wiehler – not accepted
  Nautilocalyx bicolor (Hook.) Wiehler – accepted
  Ortholoma minor (Hook.) Wiehler – not accepted
  Ortholoma repens (Hook.) Wiehler – not accepted
  Porotrichum neckeroides (Hook.) Williams – not accepted
  Agastache cana (Hook.) Wooton & Standl. – accepted – mosquito plant
  Astragalus astragalinus (Hook.) Á. Löve & D. Löve – not accepted
  Cyrtorhyncha cymbalaria ssp. alpina (Hook.) Á. Löve & D. Löve – not accepted
  Douglasia ochotensis ssp. arctica (Hook.) Á. Löve & D. Löve – not accepted
  Elytrigia dasystachya (Hook.) Á. Löve & D. Löve – not accepted
  Gastrolychnis drummondii (Hook.) Á. Löve & D. Löve – not accepted
  Gordonia spathulifolia (Hook.) Á. Löve & D. Löve – not accepted
  Gormania spathulifolia (Hook.) Á. Löve & D. Löve – not accepted
  Jurtsevia richardsonii (Hook.) Á. Löve & D. Löve – not accepted
  Phippsia arctica (Hook.) Á. Löve & D. Löve – not accepted
  Salix reticulata ssp. nivalis (Hook.) Á. Löve & D. Löve & B.M. Kapoor – not accepted – snow willow
  Blepharidophyllum densifolium (Hook.) Ĺngstr. ex C. Massal. – accepted
  Aloe deltoidea Hook.f. – not accepted
  Solanum acanthodes Hook.f. – accepted
  Solanum edmondstonii Hook.f. – accepted
  Heteroscyphus polycladus (Hook.f. & Lév.) R.M. Schust. – accepted
  Heteroscyphus triacanthus (Hook.f. & Lév.) Schiffn. – accepted
  Heteroscyphus triacanthus var. triacanthus (Hook.f. & Lév.) Schiffn. – accepted
  Jungermannia argentea Hook.f. & Taylor – not accepted
  Jungermannia polycantha Hook.f. & Taylor – not accepted
  Jungermannia subtrifida Hook.f. & Taylor – not accepted
  Jungermannia subtrifidum Hook.f. & Taylor – not accepted
  Lophocolea subemarginata Hook.f. & Taylor – accepted
  Plagiochila colensoi Hook.f. & Taylor – accepted
  Plagiochila colensoi var. colensoi Hook.f. & Taylor – accepted
  Plagiochila intertexta Hook.f. & Taylor – accepted
  Radula strangulata Hook.f. & Taylor – accepted
  Hymenophyton leptopodum (Hook.f. & Taylor) A. Evans – accepted
  Schistochila laminigera (Hook.f. & Taylor) A. Evans – accepted
  Acrobolbus anisodontus (Hook.f. & Taylor) Briscoe – accepted
  Riccardia prehensilis (Hook.f. & Taylor) C. Massal. – accepted
  Adelanthus occlusus (Hook.f. & Taylor) Carrington – accepted
  Cheilolejeunea albovirens (Hook.f. & Taylor) E.A. Hodgs. – accepted
  Neolepidozia patentissima (Hook.f. & Taylor) E.D. Cooper – accepted
  Neolepidozia patentissima var. patentissima (Hook.f. & Taylor) E.D. Cooper – accepted
  Neolepidozia tetrapila (Hook.f. & Taylor) E.D. Cooper – accepted
  Neolepidozia tetrapila var. tetrapila (Hook.f. & Taylor) E.D. Cooper – accepted
  Tricholepidozia tetradactyla (Hook.f. & Taylor) E.D. Cooper – accepted
  Triandrophyllum subtrifidum (Hook.f. & Taylor) Fulford & Hatcher – accepted
  Triandrophyllum subtrifidum var. subtrifidum (Hook.f. & Taylor) Fulford & Hatcher – accepted
  Lobatiriccardia alterniloba (Hook.f. & Taylor) Furuki – accepted
  Lobatiriccardia alterniloba var. alterniloba (Hook.f. & Taylor) Furuki – accepted
  Isotachis intortifolia (Hook.f. & Taylor) Gottsche – accepted
  Trichocolea mollissima (Hook.f. & Taylor) Gottsche – accepted
  Aneura multifida var. submersa (Hook.f. & Taylor) Gottsche, Lindenb. & Nees – not accepted
  Frullania aterrima (Hook.f. & Taylor) Gottsche, Lindenb. & Nees – accepted
  Frullania clavata (Hook.f. & Taylor) Gottsche, Lindenb. & Nees – accepted
  Frullania congesta (Hook.f. & Taylor) Gottsche, Lindenb. & Nees – accepted
  Frullania fugax (Hook.f. & Taylor) Gottsche, Lindenb. & Nees – accepted
  Frullania monocera (Hook.f. & Taylor) Gottsche, Lindenb. & Nees – accepted
  Frullania monocera var. monocera (Hook.f. & Taylor) Gottsche, Lindenb. & Nees – accepted
  Frullania pycnantha (Hook.f. & Taylor) Gottsche, Lindenb. & Nees – accepted
  Frullania rostrata (Hook.f. & Taylor) Gottsche, Lindenb. & Nees – accepted
  Frullania squarrosula (Hook.f. & Taylor) Gottsche, Lindenb. & Nees – accepted
  Lejeunea primordialis (Hook.f. & Taylor) Gottsche, Lindenb. & Nees – accepted
  Lepidozia glaucophylla (Hook.f. & Taylor) Gottsche, Lindenb. & Nees – accepted
  Lepidozia laevifolia (Hook.f. & Taylor) Gottsche, Lindenb. & Nees – accepted
  Lepidozia laevifolia var. laevifolia (Hook.f. & Taylor) Gottsche, Lindenb. & Nees – accepted
  Lophocolea bispinosa (Hook.f. & Taylor) Gottsche, Lindenb. & Nees – accepted
  Lophocolea humifusa (Hook.f. & Taylor) Gottsche, Lindenb. & Nees – accepted
  Lophocolea humistrata (Hook.f. & Taylor) Gottsche, Lindenb. & Nees – accepted
  Lophocolea lenta (Hook.f. & Taylor) Gottsche, Lindenb. & Nees – accepted
  Lophocolea leptantha (Hook.f. & Taylor) Gottsche, Lindenb. & Nees – accepted
  Lophocolea perpusilla (Hook.f. & Taylor) Gottsche, Lindenb. & Nees – accepted
  Lophocolea sabuletorum (Hook.f. & Taylor) Gottsche, Lindenb. & Nees – accepted
  Lophocolea subviridis (Hook.f. & Taylor) Gottsche, Lindenb. & Nees – accepted
  Lophocolea textilis (Hook.f. & Taylor) Gottsche, Lindenb. & Nees – accepted
  Plagiochila aculeata (Hook.f. & Taylor) Gottsche, Lindenb. & Nees – accepted
  Plagiochila ansata (Hook.f. & Taylor) Gottsche, Lindenb. & Nees – accepted
  Plagiochila fuscella (Hook.f. & Taylor) Gottsche, Lindenb. & Nees – accepted
  Plagiochila fuscella var. fuscella (Hook.f. & Taylor) Gottsche, Lindenb. & Nees – accepted
  Plagiochila gregaria (Hook.f. & Taylor) Gottsche, Lindenb. & Nees – accepted
  Plagiochila heterodonta (Hook.f. & Taylor) Gottsche, Lindenb. & Nees – accepted
  Plagiochila incurvicolla (Hook.f. & Taylor) Gottsche, Lindenb. & Nees – accepted
  Plagiochila incurvicolla var. incurvicolla (Hook.f. & Taylor) Gottsche, Lindenb. & Nees – accepted
  Plagiochila minutula (Hook.f. & Taylor) Gottsche, Lindenb. & Nees – accepted
  Plagiochila uncialis (Hook.f. & Taylor) Gottsche, Lindenb. & Nees – accepted
  Radula aneurismalis (Hook.f. & Taylor) Gottsche, Lindenb. & Nees – accepted
  Radula aquilegia (Hook.f. & Taylor) Gottsche, Lindenb. & Nees – accepted
  Radula buccinifera (Hook.f. & Taylor) Gottsche, Lindenb. & Nees – accepted
  Radula flavifolia (Hook.f. & Taylor) Gottsche, Lindenb. & Nees – accepted
  Radula fulvifolia (Hook.f. & Taylor) Gottsche, Lindenb. & Nees – accepted
  Radula helix (Hook.f. & Taylor) Gottsche, Lindenb. & Nees – accepted
  Radula marginata (Hook.f. & Taylor) Gottsche, Lindenb. & Nees – accepted
  Radula uvifera (Hook.f. & Taylor) Gottsche, Lindenb. & Nees – accepted
  Symphyogyna rhodina (Hook.f. & Taylor) Gottsche, Lindenb. & Nees – accepted
  Thysananthus anguiformis (Hook.f. & Taylor) Gottsche, Lindenb. & Nees – accepted
  Zoopsis argentea (Hook.f. & Taylor) Gottsche, Lindenb. & Nees – accepted
  Zoopsis argentea var. argentea (Hook.f. & Taylor) Gottsche, Lindenb. & Nees – accepted
  Cheilolejeunea ascensionis (Hook.f. & Taylor) Grolle – accepted
  Clasmatocolea fulvella (Hook.f. & Taylor) Grolle – accepted
  Clasmatocolea humilis (Hook.f. & Taylor) Grolle – accepted
  Clasmatocolea humilis var. humilis (Hook.f. & Taylor) Grolle – accepted
  Clasmatocolea notophylla (Hook.f. & Taylor) Grolle – accepted
  Clasmatocolea obvoluta (Hook.f. & Taylor) Grolle – accepted
  Clasmatocolea obvoluta var. obvoluta (Hook.f. & Taylor) Grolle – accepted
  Clasmatocolea strongylophylla (Hook.f. & Taylor) Grolle – accepted
  Clasmatocolea trachyopa (Hook.f. & Taylor) Grolle – accepted
  Diplasiolejeunea plicatiloba (Hook.f. & Taylor) Grolle – accepted
  Goebelobryum unguiculatum (Hook.f. & Taylor) Grolle – accepted
  Herzogobryum atrocapillum (Hook.f. & Taylor) Grolle – accepted
  Kurzia hippurioides (Hook.f. & Taylor) Grolle – accepted
  Kurzia hippurioides var. hippurioides (Hook.f. & Taylor) Grolle – accepted
  Kurzia nemoides (Hook.f. & Taylor) Grolle – accepted
  Saccogynidium vasculosum (Hook.f. & Taylor) Grolle – accepted
  Symphyogyna tenuinervis (Hook.f. & Taylor) Grolle – accepted
  Tetracymbaliella cymbalifera (Hook.f. & Taylor) Grolle – accepted
  Microlejeunea latitans (Hook.f. & Taylor) Heinrichs, Schäf.-Verw., Pócs & S. Dong – accepted
  Pachyglossa tenacifolia (Hook.f. & Taylor) Herzog & Grolle – accepted
  Clasmatocolea inflexispina (Hook.f. & Taylor) J.J. Engel – accepted
  Clasmatocolea rigens (Hook.f. & Taylor) J.J. Engel – accepted
  Hepatostolonophora rotata (Hook.f. & Taylor) J.J. Engel – accepted
  Hepatostolonophora rotata var. rotata (Hook.f. & Taylor) J.J. Engel – accepted
  Heteroscyphus planiusculus (Hook.f. & Taylor) J.J. Engel – accepted
  Leptoscyphus physanthus (Hook.f. & Taylor) J.J. Engel – accepted
  Plagiochila circinalis var. hemicardia (Hook.f. & Taylor) J.J. Engel & G.L. Merr. – accepted
  Dinckleria fruticella (Hook.f. & Taylor) J.J. Engel & Heinrichs – accepted
  Heteroscyphus allodontus (Hook.f. & Taylor) J.J. Engel & R.M. Schust. – accepted
  Syzygiella acinacifolia (Hook.f. & Taylor) K. Feldberg, Vána, Hentschel & Heinrichs – accepted
  Syzygiella tasmanica (Hook.f. & Taylor) K. Feldberg, Vána, Hentschel & Heinrichs – accepted
  Riccardia cochleata (Hook.f. & Taylor) Kuntze – accepted
  Cryptolophocolea leucophylla (Hook.f. & Taylor) L. Söderstr. – accepted
  Cryptolophocolea pallidovirens (Hook.f. & Taylor) L. Söderstr. – accepted
  Cryptolophocolea spinifera (Hook.f. & Taylor) L. Söderstr. – accepted
  Pachyglossa austrigena (Hook.f. & Taylor) L. Söderstr. – accepted
  Pachyglossa austrigena ssp. austrigena (Hook.f. & Taylor) L. Söderstr. – accepted
  Nephelolejeunea nudipes (Hook.f. & Taylor) L. Söderstr. & A. Hagborg – accepted
  Cheilolejeunea microscypha (Hook.f. & Taylor) M. Wigginton – accepted
  Cheilolejeunea rotalis (Hook.f. & Taylor) M. Wigginton – accepted
  Balantiopsis diplophylla (Hook.f. & Taylor) Mitt. – accepted
  Balantiopsis diplophylla var. diplophylla (Hook.f. & Taylor) Mitt. – accepted
  Balantiopsis erinacea (Hook.f. & Taylor) Mitt. – accepted
  Lembidium nutans (Hook.f. & Taylor) Mitt. – accepted
  Lembidium nutans var. nutans (Hook.f. & Taylor) Mitt. – accepted
  Lepidozia spinosissima (Hook.f. & Taylor) Mitt. – accepted
  Leptoscyphus aequatus (Hook.f. & Taylor) Mitt. – accepted
  Solenostoma inundatum (Hook.f. & Taylor) Mitt. ex Steph. – accepted
  Acrobolbus ochrophyllus (Hook.f. & Taylor) R.M. Schust. – accepted
  Andrewsianthus perigonialis (Hook.f. & Taylor) R.M. Schust. – accepted
  Cheilolejeunea implexicaulis (Hook.f. & Taylor) R.M. Schust. – accepted
  Cheilolejeunea mimosa (Hook.f. & Taylor) R.M. Schust. – accepted
  Eotrichocolea polyacantha (Hook.f. & Taylor) R.M. Schust. – accepted
  Eotrichocolea polycantha (Hook.f. & Taylor) R.M. Schust. – not accepted
  Heteroscyphus supinus (Hook.f. & Taylor) R.M. Schust. – accepted
  Acrolejeunea mollis (Hook.f. & Taylor) Schiffn. – accepted
  Heteroscyphus chlorophyllus (Hook.f. & Taylor) Schiffn. – accepted
  Heteroscyphus fissistipus (Hook.f. & Taylor) Schiffn. – accepted
  Heteroscyphus fissistipus var. fissistipus (Hook.f. & Taylor) Schiffn. – accepted
  Heteroscyphus oblongifolius (Hook.f. & Taylor) Schiffn. – accepted
  Cephalozia physocaula (Hook.f. & Taylor) Steph. – accepted
  Harpalejeunea marginalis (Hook.f. & Taylor) Steph. – accepted
  Harpalejeunea parasitica (Hook.f. & Taylor) Steph. – accepted
  Isotachis humectata (Hook.f. & Taylor) Steph. – accepted
  Lopholejeunea plicatiscypha (Hook.f. & Taylor) Steph. – accepted
  Schistochila balfouriana (Hook.f. & Taylor) Steph. – accepted
  Schistochila repleta (Hook.f. & Taylor) Steph. – accepted
  Schistochila splachnophylla (Hook.f. & Taylor) Steph. – accepted
  Schistochila tuloides (Hook.f. & Taylor) Steph. – accepted
  Cephalozia tubulata (Hook.f. & Taylor) Trevis. – accepted
  Dinckleria pleurata (Hook.f. & Taylor) Trevis. – accepted
  Lepidolaena reticulata (Hook.f. & Taylor) Trevis. – accepted
  Pallavicinia xiphoides (Hook.f. & Taylor) Trevis. – accepted
  Riccardia alcicornis (Hook.f. & Taylor) Trevis. – accepted
  Riccardia nana (Hook.f. & Taylor) Trevis. – accepted
  Riccardia submersa (Hook.f. & Taylor) Trevis. – accepted
  Asterella australis (Hook.f. & Taylor) Verd. – accepted
  Pachyglossa otiphylla (Hook.f. & Taylor) Vána – accepted
  Protolophozia multicuspidata (Hook.f. & Taylor) Vána & L. Söderstr. – accepted
  Spruceanthus olivaceus (Hook.f. & Taylor) X.Q. Shi, R.L. Zhu & Gradst. – accepted
  Zoopsis Hook.f. ex Gottsche – accepted
  Acropeltis phyllophora Hooker and Harvey – not accepted
  Nitophyllum lividum Hooker and Harvey – not accepted
  Myriogramme livida (Hooker and Harvey) Kylin – accepted
  Carpopeltis phyllophora (Hooker and Harvey) Schmitz – accepted
  Mimulus luteus var. cupreus (hort. ex Dombrain) Hook. – not accepted
  Alloplectus speciosus hort. ex Hook. – not accepted
  Columnea crassifolia hort. ex Hook. – not accepted
  Naegelia amabilis hort. ex Hook. – not accepted
  Aster attenuatus (Howell) M. Peck non Lindl. ex Hook. – not accepted
  Anemidictyon J. Sm. ex Hook. – not accepted
  Cyathea integra J. Sm. ex Hook. – accepted
  Cyathea integra var. integra J. Sm. ex Hook. – not accepted
  Schizocaena J. Sm. ex Hook. – not accepted
  Cyathea lepifera (J. Sm. ex Hook.) Copel. – accepted
  Sphaeropteris integra (J. Sm. ex Hook.) R.M. Tryon – not accepted
  Sphaeropteris lepifera (J. Sm. ex Hook.) R.M. Tryon – not accepted
  Cyathea tenera (J. Sm. ex Hook.) T. Moore – accepted – helecho gigante
  Rhabdonia J.D. Hooker & Harvey – accepted
  Daltonia splachnoiodes (J.E. Smith) Hook. & Taylor – not accepted
  Alopecurus elatior Jacq. ex Hook. f. – not accepted
  Adenophorus tamariscinus (Kaulf.) Hook. & Grev. – accepted – wahini noho mauna
  Adenophorus tamariscinus var. tamariscinus (Kaulf.) Hook. & Grev. – accepted – wahini noho mauna
  Deparia prolifera (Kaulf.) Hook. & Grev. – accepted – prolific false spleenwort
  Didissandra rufa King ex Hook. f. – not accepted
  Phinaea caripensis (Klotzsch ex Hanst.) Benth. & Hook. f. ex Soler. – not accepted
  Nephrodium funestum (Kunze) Hook. – not accepted
  Oryzopsis miliacea (L.) Benth. & Hook. ex Asch. & Schweinf. – not accepted
  Carum petroselinum (L.) Benth. & Hook. f. – not accepted
  Pieris mariana (L.) Benth. & Hook. f. – not accepted
  Osmanthus americanus (L.) Benth. & Hook. f. ex A. Gray – accepted – devilwood
  Osmanthus americanus var. americanus (L.) Benth. & Hook. f. ex A. Gray – accepted – American devilwood, devilwood
  Carum copticum (L.) Benth. & Hook. f. ex C.B. Clarke – not accepted
  Pentaraphia acaulis (L.) Benth. & Hook. f. ex Fawc. – not accepted
  Dichelachne crinata (L. f.) Hook. f. – not accepted – clovenfoot plumegrass
  Dichelachne crinita (L. f.) Hook. f. – accepted
  Chlorophora tinctoria (L.) Gaudich. ex Benth. & Hook. f. – not accepted – fustictree
  Barosma crenulata (L.) Hook. – not accepted
  Hedyotis caerulea (L.) Hook. – not accepted
  Helminthostachys zeylanica (L.) Hook. – accepted – kamraj
  Nabalus albus (L.) Hook. – not accepted
  Nabalus altissimus (L.) Hook. – not accepted
  Peperomia maculosa (L.) Hook. – accepted – spotted peperomia
  Senecio palustris (L.) Hook. – not accepted
  Brizopyrum spicatum (L.) Hook. & Arn. – not accepted
  Kallstroemia maxima (L.) Hook. & Arn. – accepted – big caltrop
  Rhynchosia tomentosa (L.) Hook. & Arn. – accepted – twining snoutbean
  Rhynchosia tomentosa var. tomentosa (L.) Hook. & Arn. – accepted – twining snoutbean
  Anthoceros punctatus var. laevis (L.) Hook. & Taylor ex Lindenb. – not accepted
  Agrostis spica-venti ssp. interrupta (L.) Hook. f. – not accepted
  Aira caespitosa ssp. alpina (L.) Hook. f. – not accepted
  Crinum latifolium var. zeylanicum (L.) Hook. f. – not accepted
  Lepturus filiformis var. incurvatus (L.) Hook. f. – not accepted
  Festuca distichophylla (Labill.) Hook. f. – not accepted
  Poa flabellata (Lam.) Hook. f. – not accepted
  Cananga odorata (Lam.) Hook. f. & Thomson – accepted – ilang-ilang, ylang-ylang
  Cunninghamia lanceolata (Lamb.) Hook. – accepted – Chinese fir
  Potentilla bipinnatifida var. glabrata (Lehm. ex Hook.) Kohli & Packer – not accepted – tansy cinquefoil
  Potentilla pensylvanica var. glabrata (Lehm. ex Hook.) S. Watson – not accepted
  Pentaraphia floribunda (Lem.) Benth. & Hook. f. ex Carričre – not accepted
  Hypochaeris brasiliensis (Less.) Benth. & Hook. ex Griseb. – not accepted – Brazilian catsear
  Haplopappus ericoides (Less.) Hook. & Arn. – not accepted
  Haplopappus ericoides var. ericoides (Less.) Hook. & Arn. – not accepted
  Episcia fulgida (Linden ex André) Hook. f. – not accepted
  Pleurothallis racemiflora Lindl. ex Hook. – accepted – ladies' bonnet orchid, Pleurothallis fragante
  Nepenthes edwardsiana Low ex Hook. f. – accepted
  Notholaena candida (M. Martens & Galeotti) Hook. – accepted
  Pellaea decomposita (M. Martens & Galeotti) Hook. – not accepted
  Pellaea decompositus (M. Martens & Galeotti) Hook. – not accepted
  Sinningia gracilis (Mart.) Benth. & Hook. f. ex Fritsch – not accepted
  Naegelia multiflora (Martens & Galeotti) Hook. – not accepted
  Nephrophyllidium crista-galli (Menzies ex Hook.) Gilg – accepted – deer-cabbage, deercabbage
  Fauria crista-galli (Menzies ex Hook.) Makino – not accepted – deercabbage
  Pyrola rotundifolia var. asarifolia (Michx.) Hook. – not accepted
  Ranunculus flammula var. filiformis (Michx.) Hook. – not accepted – greater creeping spearwort
  Deyeuxia canadensis (Michx.) Munro ex Hook. – not accepted
  Atamisquea Miers ex Hook. & Arn. – accepted
  Atamisquea emarginata Miers ex Hook. & Arn. – accepted – atamisquea, vomitbush
  Lithrea Miers ex Hook. & Arn. – accepted
  Tillaea minima Miers ex Hook. & Arn. – not accepted
  Oreocharis primuloides (Miq.) Benth. & Hook. f. ex C.B. Clarke – accepted
  Dyera costulata (Miq.) Hook. f. – accepted – jelutong
  Acacia cavenia (Molina) Hook. & Arn. – not accepted
  Achneria Munro ex Benth. & Hook. f. – not accepted
  Deyeuxia groenlandica Munro ex Hook. f. – not accepted
  Echinochloa glabrescens Munro ex Hook. f. – accepted
  Sporobolus ciliatus Munro ex Hook. f. – not accepted
  Stapelia nobilis N.E. Br. ex Hook. f. – not accepted
  Sinningia macrophylla (Nees & Mart.) Benth. & Hook. f. ex Fritsch – accepted
  Jacobinia candicans (Nees) Benth. & Hook. f. – not accepted
  Lappago occidentalis Nees ex Hook. – not accepted
  Saccharum chinense Nees ex Hook. & Arn. – not accepted
  Festuca tolucensis var. hephaestophila (Nees ex Steud.) Nees ex Hook. – not accepted
  Brizopyrum douglasii (Nees) Hook. & Arn. – not accepted
  Rhus integrifolia (Nutt.) Benth. & Hook. f. ex W.H. Brewer & S. Watson – accepted – lemonade sumac
  Apium echinatum (Nutt. ex DC.) Benth. & Hook. f. ex S. Watson – not accepted
  Abronia fragrans Nutt. ex Hook. – accepted – heart's-delight, sweet sand verbena, prairie snowball, snowball sand verbena
  Cunila coccinea Nutt. ex Hook. – not accepted
  Nuttallia pedata Nutt. ex Hook. – not accepted
  Pholisma Nutt. ex Hook. – accepted
  Pholisma arenarium Nutt. ex Hook. – accepted – desert Christmas tree
  Spiraea dumosa Nutt. ex Hook. – not accepted
  Cerasus ilicifolia Nutt. ex Hook. & Arn. – not accepted
  Cercocarpus parvifolius Nutt. ex Hook. & Arn. – not accepted
  Horkelia parviflora Nutt. ex Hook. & Arn. – not accepted
  Lupinus parviflorus Nutt. ex Hook. & Arn. – accepted – lodgepole lupine
  Lupinus parviflorus ssp. parviflorus Nutt. ex Hook. & Arn. – accepted – lodgepole lupine
  Lupinus truncatus Nutt. ex Hook. & Arn. – accepted – collared annual lupine
  Lupinus argenteus var. parviflorus (Nutt. ex Hook. & Arn.) C.L. Hitchc. – not accepted
  Prunus ilicifolia (Nutt. ex Hook. & Arn.) D. Dietr. – accepted – hollyleaf cherry
  Prunus ilicifolia ssp. ilicifolia (Nutt. ex Hook. & Arn.) D. Dietr. – not accepted – hollyleaf cherry
  Prunus ilicifolia var. ilicifolia (Nutt. ex Hook. & Arn.) D. Dietr. – accepted – hollyleaf cherry
  Horkelia fusca ssp. parviflora (Nutt. ex Hook. & Arn.) D.D. Keck – not accepted – smallflower horkelia
  Potentilla douglasii var. parviflora (Nutt. ex Hook. & Arn.) J.T. Howell – not accepted – pinewoods horkelia
  Lupinus argenteus ssp. parviflorus (Nutt. ex Hook. & Arn.) L.Ll. Phillips – not accepted
  Oenothera caespitosa ssp. marginata (Nutt. ex Hook. & Arn.) Munz – not accepted – tufted evening primrose, tufted evening-primrose
  Oenothera caespitosa var. marginata (Nutt. ex Hook. & Arn.) Munz – not accepted
  Oenothera cespitosa ssp. marginata (Nutt. ex Hook. & Arn.) Munz – accepted – tufted evening primrose, tufted eveningprimrose
  Oenothera cespitosa var. marginata (Nutt. ex Hook. & Arn.) Munz – not accepted
  Horkelia fusca var. parviflora (Nutt. ex Hook. & Arn.) Wawra – accepted
  Callirhoe pedata (Nutt. ex Hook.) A. Gray – accepted – palmleaf poppymallow
  Plagiobothrys tenellus (Nutt. ex Hook.) A. Gray – accepted – Pacific popcornflower
  Holodiscus dumosus (Nutt. ex Hook.) A. Heller – not accepted – bush oceanspray, rockspirea
  Calamintha coccinea (Nutt. ex Hook.) Benth. – not accepted – scarlet calamint
  Satureja coccinea (Nutt. ex Hook.) Bertol. – not accepted
  Aspidotis (Nutt. ex Hook.) Copel. – accepted – lacefern
  Bromus oregonus Nutt. ex Hook. f. – not accepted
  Clinopodium coccineum (Nutt. ex Hook.) Kuntze – accepted – scarlet calamint
  Eriogonum salsuginosum (Nutt.) Hook. – not accepted
  Anemopsis californica (Nutt.) Hook. & Arn. – accepted – yerba-mansa, yerba mansa
  Anemopsis californica var. californica (Nutt.) Hook. & Arn. – not accepted – yerba mansa
  Coreopsis maritima (Nutt.) Hook. f. – accepted – sea dahlia
  Cneoridium dumosum (Nutt.) Hook. f. ex Baill. – accepted – bush rue
  Calanthera dactyloides (Nutt.) Kunth ex Hook. – not accepted
  Orothamnus Pappe ex Hook. – accepted
  Orothamnus zeyheri Pappe ex Hook. – accepted
  Agropyron repens ssp. pungens (Pers.) Hook. f. – not accepted
  Andropogon sorghum var. vulgaris (Pers.) Stapf ex Hook. f. – not accepted
  Deyeuxia arundina Phil. ex Durand & Hook. f. – not accepted
  Heliconia metallica Planch. & Linden ex Hook. – accepted – shining bird of paradise, shining bird-of-paradise
  Guilleminea lanuginosa (Poir.) Moq. ex Benth. & Hook. f. – not accepted
  Pieris floribunda (Pursh) Benth. & Hook. f. – accepted – mountain fetterbush
  Lygodesma juncea (Pursh) D. Don ex Hook. – not accepted
  Lygodesmia juncea (Pursh) D. Don ex Hook. – accepted – rush skeletonplant, rush skeleton-plant, rush skeletonweed, skeletonweed, skeletonplant
  Eriogynia pectinata (Pursh) Hook. – not accepted
  Habenaria dilatata (Pursh) Hook. – not accepted
  Habenaria orbiculata (Pursh) Hook. – not accepted
  Lycopodium clavatum var. tristachyum (Pursh) Hook. – not accepted
  Nabalus serpentarius (Pursh) Hook. – not accepted
  Senecio aureus var. gracilis (Pursh) Hook. – not accepted
  Tanacetum suaveolens (Pursh) Hook. – not accepted
  Hypodermis R. Br. ex Hook. – not accepted
  Hypoderris R. Br. ex Hook. – accepted
  Hierochloe redolens R. Br. ex Hook. f. – not accepted
  Tortula leucostoma (R. Br.) Hook. & Grev. – accepted
  Dichelachne sciurea (R. Br.) Hook. f. – not accepted
  Halophila ovalis (R. Br.) Hook. f. – accepted – seagrass
  Didymocarpus incanus (R. Brown) Benth. & Hook. f. ex C.B. Clarke – not accepted
  Paspalum sanguinale var. ciliare (Retz.) Hook. f. – not accepted
  Digitaria sanguinalis f. ciliaris (Retz.) Hook. f. ex Haines – not accepted
  Digitaria marginata var. ciliaris (Retz.) Hook. f. ex Ridl. – not accepted
  Dryas drummondii Richardson ex Hook. – accepted – Drummond's mountain-avens
  Dryas drummondii var. drummondii Richardson ex Hook. – not accepted – Drummond's mountain-avens
  Eutrema arenicola Richardson ex Hook. – not accepted
  Arabidopsis arenicola (Richardson ex Hook.) Al-Shehbaz, Elven, D.F. Murray & Warwick – accepted
  Arabis arenicola (Richardson ex Hook.) Gelert – not accepted – sand rockcress
  Dryas octopetala var. drummondii (Richardson ex Hook.) S. Watson – not accepted
  Aeschynanthus javanicus Rollinson ex Hook. – not accepted
  Coix lacryma-jobi var. ma-yuen (Rom. Caill.) Stapf ex Hook. f. – accepted
  Brassica trilocularis (Roxb.) Hook. f. & Thomson – not accepted
  Hodgsonia heteroclita (Roxb.) Hook. f. & Thomson – accepted – Chinese lardplant
  Parkinsonia praecox (Ruiz & Pav. ex Hook.) J. Hawkins – accepted
  Disporum trachycarpum (S. Watson) Benth. & Hook. f. – not accepted – rough-fruit fairybells, wartberry fairybells, roughfruit fairybells
  Tortula gracilis Schleich. ex Hook. & Grev. – not accepted
  Didymodon rigidulus var. gracilis (Schleich. ex Hook. & Grev.) R.H. Zander – accepted – rigid didymodon moss
  Tayloria splachnoides (Schleich. ex Schwägr.) Hook. – accepted – splachnoid dung moss
  Acacia pentagona (Schumach. & Thonn.) Hook. f. – accepted
  Chrysosplenium americanum Schwein. ex Hook. – accepted – water-mat, American golden saxifrage
  Heterostega curtipendula Schwein. ex Hook. f. – not accepted
  Orthotrichum elegans Schwägr. ex Hook. & Grev. – not accepted
  Lewinskya elegans (Schwägr. ex Hook. & Grev.) F. Lara, Garilleti & Goffinet – accepted
  Orthotrichum speciosum ssp. elegans (Schwägr. ex Hook. & Grev.) Lindb. – not accepted
  Orthotrichum speciosum var. elegans (Schwägr. ex Hook. & Grev.) Warnst. – not accepted – elegant lanceolateleaf rock moss
  Achimenes mexicana (Seem.) Benth. & Hook. f. ex Fritsch – accepted
  Astragalus polaris (Seem.) Benth. ex Hook. f. – accepted – polar milkvetch
  Episcia chontalensis (Seem.) Hook. f. – not accepted
  Cotula australis (Sieber ex Spreng.) Hook. f. – accepted – Australian waterbuttons
  Tabebuia aurea (Silva Manso) Benth. & Hook. f. ex S. Moore – accepted – Caribbean trumpet-tree
  Fatsia horrida (Sm.) Benth. & Hook. f. ex W.H. Brewer & S. Watson – not accepted
  Telfairia pedata (Sm. ex Sims) Hook. – accepted – oysternut
  Cibotium glaucum (Sm.) Hook. & Arn. – accepted – hapu'u
  Daltonia splachnoides (Sm.) Hook. & Taylor – accepted
  Anthoceros punctatus var. major (Smith) Hook. & Wilson – not accepted
  Cyathea conjugata (Spruce ex Hook.) Domin – accepted
  Deschampsia airiformis (Steud.) Benth. & Hook. f. – accepted
  Actinostachys pennula (Sw.) Hook. – accepted – ray spiked fern, ray fern
  Polystachya luteola (Sw.) Hook. – not accepted
  Lycopodium cernuum var. curvatum (Sw.) Hook. & Grev. – not accepted
  Antirhea lucida (Sw.) Hook. f. – not accepted – palo iloron
  Sedum sieboldii Sweet ex Hook. – not accepted – Siebold's stonecrop
  Hylotelephium sieboldii (Sweet ex Hook.) H. Ohba – accepted
  Polypodium phyllitidis var. latum (T. Moore) Hook. – not accepted
  Noteroclada Taylor ex Hook.f. & Wilson – accepted
  Dalbergia barclayi Telf. ex Hook. – not accepted
  Mundulea barclayi (Telf. ex Hook.) R. Viguier ex Du Puy & Labat – accepted
  Gleichenia glauca (Thunb. ex Houtt.) Hook. – not accepted
  Tricyrtis hirta (Thunb.) Hook. – accepted – toadlily
  Lespedeza striata (Thunb.) Hook. & Arn. – not accepted
  Filicium Thwaites ex Benth. & Hook. f. – accepted
  Populus trichocarpa Torr. & A. Gray ex Hook. – accepted – black cottonwood
  Nuttallia cerasiformis Torr. & A. Gray ex Hook. & Arn. – not accepted
  Osmaronia cerasiformis (Torr. & A. Gray ex Hook. & Arn.) Greene – not accepted
  Oemleria cerasiformis (Torr. & A. Gray ex Hook. & Arn.) J.W. Landon – accepted – Indian plum
  Claytonia spathulata var. exigua (Torr. & A. Gray) Hook. & Arn. – not accepted
  Lupinus foliosus (Torr. & A. Gray) Nutt. ex Hook. – not accepted
  Carex complanata Torr. & Hook. – accepted – blue sedge, hirsute sedge
  Carex microdonta Torr. & Hook. – accepted – littletooth sedge
  Carex oxylepis Torr. & Hook. – accepted – sharpscale sedge
  Carex oxylepis var. oxylepis Torr. & Hook. – not accepted – sharpscale sedge
  Cyperus cephalanthus Torr. & Hook. – accepted – buttonbush flatsedge
  Cyperus drummondii Torr. & Hook. – accepted – Drummond's sedge
  Cyperus lutescens Torr. & Hook. – not accepted
  Cyperus setigerus Torr. & Hook. – accepted – lean flatsedge
  Fimbristylis puberula var. drummondii (Torr. & Hook.) D.B. Ward – not accepted
  Cyperus acuminatus Torr. & Hook. ex Torr. – accepted – taperleaf flatsedge, taper-tip flat sedge, tapertip flatsedge
  Fimbristylis drummondii (Torr. & Hook. ex Torr.) Boeckeler – not accepted
  Cyperus virens var. drummondii (Torr. & Hook.) Kük. – not accepted – Drummond's flatsedge
  Cyperus uniflorus Torr. & Hook., non Thunb. – not accepted
  Mirabilis coccinea (Torr.) Benth. & Hook. f. – accepted – scarlet four-o'clock, red four-o'clock, scarlet four o'clock
  Vilfa cuspidata Torr. ex Hook. – not accepted
  Vilfa depauperata Torr. ex Hook. – not accepted
  Sporobolus cuspidatus (Torr. ex Hook.) Alph. Wood – not accepted
  Agrostis drummondii Torr. ex Hook. f. – not accepted
  Muhlenbergia cuspidata (Torr. ex Hook.) Rydb. – accepted – plains muhly
  Sporobolus depauperatus (Torr. ex Hook.) Scribn. – not accepted
  Tripterocalyx (Torr.) Hook. – accepted – sandpuffs
  Tripterocalyx micranthus (Torr.) Hook. – accepted – sandpuffs, small-flower sandpuffs, smallflower sand verbena
  Deyeuxia anomala (Trin.) Benth. & Hook. f. – not accepted
  Colpodium arundinaceum (Trin.) Hook. – not accepted
  Deyeuxia aleutica (Trin.) Munro ex Hook. – not accepted
  Grimmia apocarpa var. stricta (Turner) Hook. & Taylor – not accepted
  Dryas octopetala var. integrifolia (Vahl) Hook. f. – not accepted
  Parathesis crenulata (Vent.) Hook. f. ex Hemsl. – accepted – scratchthroat
  Pieris nitida (W. Bartram ex Marshall) Benth. & Hook. f. – not accepted
  Conradia neglecta W. Hook. – not accepted
  Pentaraphia neglecta (W. Hook.) Hanst. – not accepted
  Gesneria neglecta (W. Hook.) Kuntze – not accepted
  Gesneria pumila ssp. neglecta (W. Hook.) L.E. Skog – accepted
  Gesneria marchii Wailes ex Hook. – not accepted
  Corytholoma marchii (Wailes ex Hook.) Decne. – not accepted
  Rechsteineria marchii (Wailes ex Hook.) Kuntze – not accepted
  Strophanthus gratus (Wall. & Hook.) Baill. – accepted – ouabain
  Alsophila gigantea Wall. ex Hook. – not accepted
  Alsophila latebrosa Wall. ex Hook. – not accepted
  Cyathea spinulosa Wall. ex Hook. – accepted
  Poinciana gilliesii Wall. ex Hook. – not accepted
  Asplenium varians Wall. ex Hook. & Grev. – accepted – variable spleenwort
  Cyrtomium caryotideum (Wall. ex Hook. & Grev.) C. Presl – accepted – dwarf netvein hollyfern
  Cyathea contaminans (Wall. ex Hook.) Copel. – accepted
  Cyathea contaminans var. contaminans (Wall. ex Hook.) Copel. – not accepted
  Cyathea latebrosa (Wall. ex Hook.) Copel. – accepted
  Caesalpinia gilliesii (Wall. ex Hook.) D. Dietr. – not accepted – bird-of-paradise shrub, paradise caesalpinia, paradise poinciana, bird of paradise, Mexican bird of paradise, bird-of-paradise
  Dillenia ovata Wall. ex Hook. f. & Thomson – accepted – ovate dillenia
  Podophyllum emodi Wall. ex Hook. f. & Thomson – not accepted
  Cyathea gigantea (Wall. ex Hook.) Holttum – accepted
  Erythrostemon gilliesii (Wall. ex Hook.) Klotzsch – accepted
  Sinningia carolinae (Wawra) Benth. & Hook. f. ex Seibert & Voss – not accepted
  Corallocarpus Welw. ex Benth. & Hook.f. – accepted
  Cyathea camerooniana var. aethiopica (Welw. ex Hook.) Holttum – accepted
  Cyathea munita Willd. ex Hook. – accepted
  Habenaria blephariglottis (Willd.) Hook. – not accepted
  Clausena anisata (Willd.) Hook. f. – accepted
  Mastigolejeunea auriculata (Wilson & Hook.) Steph. – not accepted
  Thysananthus auriculatus (Wilson & Hook.) Sukkharak & Gradst. – accepted
  Agrostis vulgaris var. nigra (With.) Hook. f. – not accepted
  Trillium discolor Wray ex Hook. – accepted – mottled wakerobin
   

A gray bar