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Taxon author: Pennell

ITIS records citing taxon author "Pennell"
 
 Kingdom Animalia
  Anomalocera opalus Pennell, 1976 -- valid
 
 Kingdom Plantae
  Acerates hirtella Pennell -- not accepted
  Afzelia pectinata ssp. peninsularis Pennell -- not accepted
  Agalinis acuta Pennell -- not accepted -- sandplain false foxglove, sandplain gerardia
  Agalinis caddoensis Pennell -- accepted -- Caddo false foxglove
  Agalinis calycina Pennell -- accepted -- leoncita false foxglove
  Agalinis decemloba (Greene) Pennell -- accepted -- ten-lobed false foxglove
  Agalinis delicatula Pennell -- not accepted
  Agalinis divaricata (Chapm.) Pennell -- accepted -- pineland false foxglove
  Agalinis edwardsiana Pennell -- accepted -- plateau false foxglove
  Agalinis edwardsiana var. glabra Pennell -- not accepted
  Agalinis fasciculata var. peninsularis Pennell -- not accepted
  Agalinis filicaulis (Benth.) Pennell -- accepted -- Jackson false foxglove
  Agalinis flava var. macrantha (Pennell) B. Boivin -- not accepted
  Agalinis georgiana (C.L. Boynt.) Pennell -- accepted
  Agalinis harperi Pennell -- accepted -- coastal plain false foxglove
  Agalinis holmiana Pennell -- not accepted
  Agalinis homalantha Pennell -- accepted -- San Antonio false foxglove
  Agalinis keyensis Pennell -- not accepted
  Agalinis laxa Pennell -- accepted -- twoline false foxglove
  Agalinis oligophylla Pennell -- accepted -- ridgestem false foxglove
  Agalinis oligophylla var. pseudaphylla Pennell -- not accepted
  Agalinis paupercula var. borealis Pennell -- not accepted -- smallflower false foxglove
  Agalinis paupercula var. neoscotica (Greene) Pennell & H. St. John -- not accepted
  Agalinis pedicularia var. caesariensis (Pennell) S.F. Blake -- not accepted
  Agalinis pinetorum Pennell -- not accepted -- coastal plain false foxglove, coastalplain false foxglove
  Agalinis pinetorum var. delicatula (Pennell) Pennell -- not accepted
  Agalinis pseudaphylla (Pennell) Shinners -- not accepted
  Agalinis pulchella Pennell -- accepted -- purple gerardia, St. Mark's false foxglove
  Agalinis purpurea (L.) Pennell -- accepted -- purple false foxglove
  Agalinis purpurea var. carteri Pennell -- not accepted
  Agalinis purpurea var. purpurea (L.) Pennell -- accepted -- purple false foxglove
  Agalinis purpurea var. racemulosa (Pennell) B. Boivin -- not accepted
  Agalinis spiciflora (Engelm.) Pennell -- not accepted
  Agalinis stenophylla Pennell -- not accepted
  Agalinis strictifolia (Benth.) Pennell -- accepted -- stiffleaf false foxglove
  Agalinis tenella Pennell -- accepted
  Agalinis tenuifolia ssp. leucanthera (Raf.) Pennell -- not accepted
  Agalinis tenuifolia var. leucanthera (Raf.) Pennell -- not accepted -- slenderleaf false foxglove
  Agalinis tenuifolia var. parviflora (Nutt.) Pennell -- not accepted -- slender-leaf false foxglove, slenderleaf false foxglove
  Agalinis tenuifolia var. polyphylla (Small) Pennell -- not accepted -- slenderleaf false foxglove
  Agalinis viridis (Small) Pennell -- accepted -- green false foxglove
  Antirrhinum coulterianum ssp. orcuttianum (A. Gray) Pennell -- not accepted
  Antirrhinum hookerianum Pennell ex Millsp. -- not accepted
  Antirrhinum multiflorum Pennell -- not accepted
  Asarina acerifolia (Pennell) Pennell -- not accepted
  Asarina antirrhiniflora (Humb. & Bonpl. ex Willd.) Pennell -- not accepted
  Asarina erubescens (D. Don) Pennell -- not accepted
  Asarina filipes (A. Gray) Pennell -- not accepted
  Asarina petrophila (Coville & C.V. Morton) Pennell -- not accepted
  Asarina stricta (Hook. & Arn.) Pennell -- not accepted
  Asarina wislizeni (Engelm. ex A. Gray) Pennell -- not accepted
  Asclepias hirtella (Pennell) Woodson -- accepted -- green milkweed, prairie milkweed, tall-green milkweed
  Asclepias longifolia ssp. hirtella (Pennell) J. Farmer & C.R. Bell -- not accepted
  Asclepias longifolia var. hirtella (Pennell) J. Farmer & C.R. Bell -- not accepted
  Aureolaria calycosa (Mack. & Bush) Pennell -- not accepted
  Aureolaria dispersa (Small) Pennell -- not accepted
  Aureolaria flava ssp. macrantha Pennell -- not accepted
  Aureolaria flava ssp. reticulata (Raf.) Pennell -- not accepted
  Aureolaria flava ssp. typica Pennell -- not accepted
  Aureolaria flava var. macrantha Pennell -- not accepted -- smooth yellow false foxglove
  Aureolaria flava var. reticulata (Raf.) Pennell -- not accepted
  Aureolaria grandiflora (Benth.) Pennell -- accepted -- largeflower yellow false foxglove
  Aureolaria grandiflora ssp. cinerea (Pennell) Pennell -- not accepted
  Aureolaria grandiflora ssp. pulchra (Pennell) Pennell -- not accepted
  Aureolaria grandiflora ssp. serrata (Torr. ex Benth.) Pennell -- not accepted
  Aureolaria grandiflora ssp. typica Pennell -- not accepted
  Aureolaria grandiflora var. cinerea Pennell -- not accepted -- largeflower yellow false foxglove
  Aureolaria grandiflora var. grandiflora (Benth.) Pennell -- not accepted -- largeflower yellow false foxglove
  Aureolaria grandiflora var. pulchra Pennell -- not accepted -- largeflower yellow false foxglove
  Aureolaria grandiflora var. serrata (Torr. ex Benth.) Pennell -- not accepted -- largeflower yellow false foxglove
  Aureolaria microcarpa Pennell -- not accepted
  Aureolaria patula (Chapm.) Pennell -- accepted -- spreading yellow false foxglove
  Aureolaria pectinata (Nutt.) Pennell -- accepted -- combleaf yellow false foxglove
  Aureolaria pectinata ssp. eurycarpa (Pennell) Pennell -- not accepted
  Aureolaria pectinata ssp. floridana Pennell -- not accepted
  Aureolaria pectinata ssp. transcendens (Pennell) Pennell -- not accepted
  Aureolaria pectinata ssp. typica Pennell -- not accepted
  Aureolaria pectinata var. eurycarpa Pennell -- not accepted
  Aureolaria pectinata var. floridana (Pennell) Pennell -- not accepted
  Aureolaria pectinata var. ozarkensis Pennell -- not accepted
  Aureolaria pectinata var. transcendens Pennell -- not accepted
  Aureolaria pedicularia (L.) Raf. ex Pennell -- accepted -- fernleaf yellow false foxglove
  Aureolaria pedicularia ssp. ambigens (Fernald) Pennell -- not accepted
  Aureolaria pedicularia ssp. austromontana (Pennell) Pennell -- not accepted
  Aureolaria pedicularia ssp. caesariensis Pennell -- not accepted
  Aureolaria pedicularia ssp. carolinensis Pennell -- not accepted
  Aureolaria pedicularia ssp. intercedens (Pennell) Pennell -- not accepted
  Aureolaria pedicularia ssp. typica Pennell -- not accepted
  Aureolaria pedicularia var. austromontana Pennell -- not accepted -- fernleaf yellow false foxglove
  Aureolaria pedicularia var. caesariensis (Pennell) Pennell -- not accepted
  Aureolaria pedicularia var. carolinensis (Pennell) Pennell -- not accepted
  Aureolaria pedicularia var. intercedens Pennell -- not accepted -- fernleaf yellow false foxglove
  Aureolaria virginica (L.) Pennell -- accepted -- downy yellow false foxglove
  Bacopa egensis (Poepp.) Pennell -- accepted -- Brazilian waterhyssop
  Bacopa eisenii (Kellogg) Pennell -- accepted -- Gila River waterhyssop, western hydranthele
  Bacopa monnieri (L.) Pennell -- accepted -- coastal waterhyssop, herb of grace, herb-of-grace
  Besseya arizonica Pennell -- not accepted -- Arizona coraldrops
  Besseya cinerea (Raf.) Pennell -- not accepted
  Besseya oblongifolia Pennell -- not accepted -- eggleaf coraldrops
  Brachystigma Pennell -- accepted -- desert foxglove
  Brachystigma wrightii (A. Gray) Pennell -- accepted -- Arizona desert foxglove, Wright's brachystigma
  Buchnera arizonica (A. Gray) Pennell -- not accepted -- Arizona bluehearts
  Buchnera breviflora Pennell -- not accepted
  Cassia aristellata (Pennell) Cory ex Cory & H.B. Parks -- not accepted
  Cassia deeringiana (Small & Pennell) J.F. Macbr. -- not accepted
  Cassia keyensis (Pennell) J.F. Macbr. -- not accepted
  Castilleja affinis ssp. litoralis (Pennell) T.I. Chuang & Heckard -- accepted -- coast Indian paintbrush
  Castilleja angustifolia var. flavescens (Pennell ex Edwin) N.H. Holmgren -- accepted -- northwestern Indian paintbrush, northwestern paintbrush
  Castilleja annua Pennell -- accepted -- Fairbanks annual Indian paintbrush
  Castilleja arachnoidea ssp. schizotricha (Greenm.) Pennell -- not accepted
  Castilleja arachnoidea ssp. shastensis (Eastw.) Pennell -- not accepted
  Castilleja calcicola Pennell ex Edwin -- not accepted
  Castilleja caudata (Pennell) Rebrist. -- accepted -- Port Clarence Indian paintbrush
  Castilleja caudata var. auricoma (Pennell) Hultén -- accepted -- Port Clarence Indian paintbrush
  Castilleja caudata var. caudata (Pennell) Rebrist. -- accepted -- Port Clarence Indian paintbrush
  Castilleja chrymactis Pennell -- accepted -- green Indian paintbrush
  Castilleja ciliata Pennell -- not accepted
  Castilleja citrina Pennell -- not accepted
  Castilleja clokeyi Pennell -- not accepted
  Castilleja cryptantha Pennell & G.N. Jones -- accepted -- obscure Indian paintbrush
  Castilleja douglasii ssp. insularis (Eastw.) Pennell -- not accepted
  Castilleja elongata Pennell -- not accepted -- tall paintbrush
  Castilleja flavescens Pennell ex Edwin -- not accepted
  Castilleja franciscana Pennell -- not accepted
  Castilleja fulva Pennell -- accepted -- Elko Indian paintbrush
  Castilleja glandulifera Pennell -- accepted -- gland Indian paintbrush
  Castilleja glandulifera ssp. pallida (Eastw.) Pennell -- not accepted
  Castilleja gyroloba Pennell -- not accepted
  Castilleja henryae Pennell -- not accepted
  Castilleja hispida ssp. abbreviata (Fernald) Pennell -- not accepted
  Castilleja hispida ssp. acuta Pennell -- accepted -- acute Indian paintbrush
  Castilleja hispida var. acuta (Pennell) Ownbey -- not accepted
  Castilleja hyetophila Pennell -- accepted -- coastal red Indian paintbrush
  Castilleja hyperborea Pennell -- accepted -- northern Indian paintbrush
  Castilleja inflata Pennell -- not accepted
  Castilleja inverta (A. Nelson & J.F. Macbr.) Pennell & Ownbey -- not accepted
  Castilleja labiata Pennell -- not accepted
  Castilleja latebracteata Pennell -- not accepted
  Castilleja linariifolia var. omnipubescens (Pennell) Clokey -- not accepted
  Castilleja litoralis Pennell -- not accepted
  Castilleja ludoviciana Pennell -- not accepted -- Jeff Davis Parish Indian paintbrush
  Castilleja martinii var. clokeyi (Pennell) N.H. Holmgren -- not accepted
  Castilleja mearnsii Pennell -- not accepted
  Castilleja mendocinensis (Eastw.) Pennell -- accepted -- Mendocino Coast Indian paintbrush, Mendocino coast paintbrush
  Castilleja mogollonica Pennell -- not accepted -- White Mountains paintbrush
  Castilleja mollis Pennell -- accepted -- soft-leaved Indian paintbrush, soft-leaved paintbrush, softleaf Indian paintbrush
  Castilleja muelleri Pennell -- not accepted -- Kluane Lake Indian paintbrush
  Castilleja nivea Pennell & Ownbey -- accepted -- snow Indian paintbrush
  Castilleja oreopola ssp. albida Pennell -- not accepted
  Castilleja ownbeyana Pennell -- not accepted -- common Wallowa paintbrush
  Castilleja pallida ssp. caudata Pennell -- not accepted
  Castilleja pallida ssp. elegans (Malte) Pennell -- not accepted
  Castilleja pallida var. caudata (Pennell) B. Boivin -- not accepted
  Castilleja parviflora var. albida (Pennell) Ownbey -- accepted -- smallflower Indian paintbrush
  Castilleja peckiana Pennell -- accepted -- peakpaintbrush, Peck's Indian paintbrush
  Castilleja pilosa var. steenensis (Pennell) N.H. Holmgren -- accepted -- Steen's mountain paintbrush, Steenes Indian paintbrush
  Castilleja psittacina (Eastw.) Pennell -- not accepted
  Castilleja purpurea var. citrina (Pennell) Shinners -- accepted -- citron paintbrush, prairie Indian paintbrush
  Castilleja raupii Pennell -- accepted -- castilléjie de Raup, Raup's Indian paintbrush
  Castilleja setosa Pennell -- accepted
  Castilleja steenensis Pennell -- not accepted
  Castilleja subinclusa ssp. franciscana (Pennell) T.I. Chuang & Heckard -- accepted -- longleaf Indian paintbrush
  Castilleja subinclusa var. franciscana (Pennell) G.L. Nesom -- not accepted
  Castilleja taedifera Pennell -- not accepted
  Castilleja thompsonii Pennell -- accepted -- Thompson's Indian paintbrush
  Castilleja tortifolia Pennell -- not accepted
  Castilleja villicaulis Pennell & Ownbey -- not accepted
  Castilleja villosissima Pennell -- not accepted
  Castilleja wallowensis Pennell -- accepted -- Wallowa Indian paintbrush
  Castilleja wherryana Pennell -- not accepted
  Castilleja wightii ssp. anacapensis (Dunkle) Pennell -- not accepted
  Castilleja wightii ssp. inflata (Pennell) Munz -- not accepted
  Castilleja wightii ssp. litoralis (Pennell) Munz -- not accepted
  Castilleja wightii ssp. rubra Pennell -- not accepted
  Castilleja williamsii Pennell -- not accepted
  Castilleja xanthotricha Pennell -- accepted -- yellowhair Indian paintbrush
  Castilleja yukonis Pennell -- accepted -- Yukon Indian paintbrush
  Cerastium arvense var. villosissimum Pennell -- not accepted
  Cerastium velutinum var. villosissimum (Pennell) J.K. Morton -- accepted -- Octoraro Creek chickweed
  Chamaecrista deeringiana Small & Pennell -- accepted -- Florida Keys sensitive pea
  Chamaecrista keyensis Pennell -- not accepted
  Chamaecrista lineata var. keyensis (Pennell) H.S. Irwin & Barneby -- accepted -- Big Pine partridge pea, narrowpod sensitive pea
  Chelone chlorantha Pennell & Wherry -- not accepted
  Chelone glabra var. chlorantha (Pennell & Wherry) Cooperr. -- not accepted
  Chelone glabra var. elongata Pennell & Wherry -- not accepted
  Chelone glabra var. ochroleuca Pennell & Wherry -- not accepted
  Chelone glabra var. typica Pennell -- not accepted
  Chelone montana (Raf.) Pennell & Wherry -- not accepted
  Chelone obliqua var. erwiniae Pennell & Wherry -- accepted -- Erwin's red turtlehead
  Chelone obliqua var. speciosa Pennell & Wherry -- accepted -- red turtlehead
  Chloropyron molle ssp. hispidum (Pennell) Tank & J.M. Egger -- accepted -- hispid bird's-beak
  Collinsia austromontana (Newsom) Pennell -- not accepted
  Collinsia bartsiifolia var. hirsuta (Kellogg) Pennell -- accepted -- white blue eyed Mary
  Collinsia rattanii ssp. glandulosa (Howell) Pennell -- accepted -- sticky blue eyed Mary
  Cordylanthus bolanderi (A. Gray) Pennell -- not accepted
  Cordylanthus brunneus (Jeps.) Pennell -- not accepted
  Cordylanthus capillaris Pennell -- not accepted
  Cordylanthus carnulosus Pennell -- not accepted
  Cordylanthus compactus Pennell -- not accepted
  Cordylanthus diffusus Pennell -- not accepted
  Cordylanthus ferrisianus Pennell -- not accepted
  Cordylanthus glandulosus Pennell & Clokey -- not accepted
  Cordylanthus hispidus Pennell -- not accepted
  Cordylanthus littoralis ssp. platycephalus (Pennell) Munz -- not accepted
  Cordylanthus mollis ssp. hispidus (Pennell) T.I. Chuang & Heckard -- not accepted -- hispid bird's-beak
  Cordylanthus pallescens Pennell -- not accepted
  Cordylanthus palmatus ssp. carnulosus (Pennell) Munz -- not accepted
  Cordylanthus pilosus ssp. diffusus (Pennell) Munz -- not accepted
  Cordylanthus platycephalus Pennell -- not accepted
  Cordylanthus ramosus ssp. setosus Pennell -- not accepted
  Cordylanthus tenuifolius Pennell -- not accepted
  Cordylanthus tenuis ssp. capillaris (Pennell) T.I. Chuang & Heckard -- accepted -- Pennell's bird's beak, Pennell's bird's-beak
  Cordylanthus tenuis ssp. pallescens (Pennell) T.I. Chuang & Heckard -- accepted -- pallid bird's-beak
  Cordylanthus viscidus (Howell) Pennell ex M. Peck -- not accepted
  Cordylanthus wrightii ssp. tenuifolius (Pennell) T.I. Chuang & Heckard -- accepted -- Wright's bird's beak, Wright's bird's-beak
  Cracca angustifolia (Featherm.) Pennell -- not accepted
  Dasystephana tenuifolia (Raf.) Pennell -- not accepted
  Dicranostegia (A. Gray) Pennell -- accepted
  Dicranostegia orcuttiana (A. Gray) Pennell -- accepted -- Orcutt's bird's-beak
  Diplacus fasciculatus (Pennell) McMinn -- accepted -- Santa Lucia Mountain bush monkeyflower
  Dodecatheon pulchellum ssp. superbum (Pennell & Stair) Hultén -- not accepted
  Eysenhardtia angustifolia Pennell -- not accepted
  Gerardia acuta (Pennell) Pennell -- not accepted
  Gerardia caddoensis (Pennell) Pennell -- not accepted
  Gerardia calycina (Pennell) Pennell -- not accepted
  Gerardia edwardsiana (Pennell) Pennell -- not accepted
  Gerardia edwardsiana ssp. glabra (Pennell) Pennell -- not accepted
  Gerardia edwardsiana ssp. typica Pennell -- not accepted
  Gerardia fasciculata ssp. peninsularis (Pennell) Pennell -- not accepted
  Gerardia flava var. macrantha (Pennell) Fernald -- not accepted
  Gerardia gatesii (Benth.) Pennell -- not accepted
  Gerardia grandiflora var. cinerea (Pennell) Cory -- not accepted
  Gerardia grandiflora var. pulchra (Pennell) Fernald -- not accepted
  Gerardia homalantha (Pennell) Pennell -- not accepted
  Gerardia keyensis (Pennell) Pennell -- not accepted
  Gerardia laxa (Pennell) Pennell -- not accepted
  Gerardia maritima ssp. grandiflora (Benth.) Pennell -- not accepted
  Gerardia obtusifolia (Raf.) Pennell -- not accepted
  Gerardia paupercula ssp. borealis (Pennell) Pennell -- not accepted
  Gerardia paupercula var. borealis (Pennell) Deam -- not accepted
  Gerardia paupercula var. typica Pennell -- not accepted
  Gerardia pedicularia var. austromontana (Pennell) Fernald -- not accepted
  Gerardia pedicularia var. intercedens (Pennell) Fernald -- not accepted
  Gerardia pseudaphylla (Pennell) Pennell -- not accepted
  Gerardia pulchella Pennell -- not accepted
  Gerardia pulchella var. delicatula (Pennell) Pennell -- not accepted
  Gerardia pulcherrima Pennell -- not accepted
  Gerardia purpurea ssp. parvula Pennell -- not accepted
  Gerardia purpurea var. carteri (Pennell) Pennell -- not accepted
  Gerardia purpurea var. racemulosa (Pennell) Gleason -- not accepted
  Gerardia racemulosa Pennell -- not accepted
  Gerardia stenophylla (Pennell) Pennell -- not accepted
  Gerardia tenella (Pennell) Pennell -- not accepted
  Gerardia tenuifolia ssp. leucanthera (Raf.) Pennell -- not accepted
  Gerardia tenuifolia ssp. macrophylla (Benth.) Pennell -- not accepted
  Gerardia tenuifolia ssp. parviflora (Nutt.) Pennell -- not accepted
  Gerardia tenuifolia ssp. polyphylla (Small) Pennell -- not accepted
  Gerardia tenuifolia var. typica Pennell -- not accepted
  Gratiola aurea var. obtusa Pennell -- not accepted
  Gratiola pilosa var. epilis Pennell -- not accepted
  Gratiola virginiana var. aestuariorum Pennell -- accepted -- roundfruit hedgehyssop
  Gratiola viscidula Pennell -- accepted -- Short's hedgehyssop
  Gratiola viscidula ssp. shortii Durand ex Pennell -- not accepted
  Gratiola viscidula ssp. viscidula Pennell -- not accepted
  Gratiola viscidula var. shortii (Durand ex Pennell) Gleason -- not accepted
  Hemianthus glomeratus (Chapm.) Pennell -- not accepted
  Hydranthelium rotundifolium (Michx.) Pennell -- not accepted
  Ilysanthes inequalis (Walter) Pennell -- not accepted
  Kneiffia brevistipata Pennell -- not accepted
  Kneiffia perennis (L.) Pennell -- not accepted
  Kneiffia semiglandulosa Pennell -- not accepted
  Kneiffia tetragona (Roth) Pennell -- not accepted
  Leucophyllum violaceum Pennell -- not accepted
  Limosella pubiflora Pennell -- accepted -- Chiricahua Mountain mudwort, Chiricahua mudwort
  Linaria canadensis var. texana (Scheele) Pennell -- not accepted
  Lindernia anagallidea (Michx.) Pennell -- not accepted
  Lindernia ciliata (Colsmann) Pennell -- accepted -- fringed false pimpernel
  Lindernia dubia (L.) Pennell -- accepted -- moistbank pimpernel, shortstalk lindernia, yellow-seed false pimpernel, yellowseed false pimpernel
  Lindernia dubia var. dubia (L.) Pennell -- not accepted -- yellow-seed false pimpernel, yellowseed false pimpernel
  Lindernia dubia var. inundata (Pennell) Pennell -- not accepted -- false pimpernel, lindernie litigieuse variété estuarienne, yellowseed false pimpernel
  Lindernia dubia var. major (Pursh) Pennell -- not accepted
  Lindernia dubia var. typica Pennell -- not accepted
  Mabrya acerifolia (Pennell) Elisens -- accepted -- brittlestem
  Macranthera flammea (W. Bartram) Pennell -- accepted -- flameflower
  Macuillamia repens (Sw.) Pennell -- not accepted
  Maurandya acerifolia Pennell -- not accepted
  Mecardonia acuminata var. microphylla (Raf.) Pennell -- accepted -- axilflower
  Mecardonia acuminata var. peninsularis Pennell -- accepted -- axilflower
  Mecardonia dianthera (Sw.) Pennell -- not accepted
  Mecardonia vandellioides auct. non (Kunth) Pennell -- not accepted
  Melampyrum lineare var. pectinatum (Pennell) Fernald -- accepted -- narrowleaf cowwheat
  Melasma melampyroides (Rich.) Pennell -- not accepted
  Mimulus bifidus Pennell -- not accepted
  Mimulus bifidus ssp. fasciculatus Pennell -- not accepted
  Mimulus bifidus var. bifidus Pennell -- not accepted
  Mimulus brachiatus Pennell -- accepted -- serpentine monkeyflower
  Mimulus brandegeei Pennell -- accepted -- Santa Cruz Island monkeyflower
  Mimulus brandegei Pennell -- not accepted -- Santa Cruz Island monkey-flower
  Mimulus constrictus (A.L. Grant) Pennell -- not accepted
  Mimulus glabratus ssp. fremontii (Benth.) Pennell -- not accepted
  Mimulus glabratus ssp. michiganensis Pennell -- not accepted -- Michigan monkey flower
  Mimulus glabratus ssp. typicus Pennell -- not accepted
  Mimulus glabratus ssp. utahensis Pennell -- not accepted
  Mimulus glabratus var. michiganensis (Pennell) Fassett -- not accepted -- Michigan monkey-flower, Michigan monkeyflower
  Mimulus guttatus ssp. arenicola Pennell -- not accepted
  Mimulus guttatus ssp. litoralis Pennell -- not accepted
  Mimulus guttatus ssp. littoralis Pennell -- not accepted
  Mimulus guttatus ssp. scouleri (Hook.) Pennell -- not accepted
  Mimulus guttatus var. laxus (Pennell) M. Peck -- not accepted
  Mimulus guttatus var. lyratus (Benth.) Pennell -- not accepted
  Mimulus guttatus var. microphyllus (Benth.) Pennell -- not accepted
  Mimulus laxus Pennell -- not accepted
  Mimulus linearifolius (A.L. Grant) Pennell -- not accepted
  Mimulus macranthus Pennell -- not accepted
  Mimulus maguirei Pennell -- not accepted
  Mimulus michiganensis (Pennell) Posto & Prather -- accepted -- Michigan monkey-flower, Michigan monkeyflower
  Mimulus microcarpus Pennell -- not accepted
  Mimulus microphyton Pennell -- not accepted
  Mimulus multiflorus Pennell -- not accepted
  Mimulus pardalis Pennell -- not accepted
  Mimulus patulus Pennell -- not accepted -- stalk-leaved monkey-flower
  Mimulus platycalyx Pennell -- accepted -- widecalyx monkeyflower
  Mimulus platylaemus Pennell -- accepted -- widethroat pink monkeyflower
  Mimulus rattanii ssp. decurtatus (A.L. Grant) Pennell -- not accepted
  Mimulus rattanii var. decurtatus (A.L. Grant) Pennell -- accepted -- Rattan's monkeyflower
  Mimulus subulatus (A.L. Grant) Pennell -- not accepted
  Mimulus trisulcatus Pennell -- not accepted
  Mimulus unimaculatus Pennell -- not accepted
  Monarda punctata ssp. immaculata Pennell -- not accepted -- spotted beebalm
  Monarda punctata ssp. punctata var. villicaulis (Pennell) E.J. Palmer & Steyerm. -- not accepted -- spotted beebalm
  Monarda punctata ssp. villicaulis Pennell -- not accepted
  Monarda punctata var. immaculata (Pennell) Scora -- accepted
  Monarda punctata var. villicaulis (Pennell) E.J. Palmer & Steyerm. -- accepted -- spotted beebalm
  Nemexia leptanthera (Pennell) Small -- not accepted
  Oenothera pilosella ssp. sessilis (Pennell) Straley -- accepted -- meadow evening primrose, meadow evening-primrose, meadow eveningprimrose
  Oenothera pilosella var. sellilis (Pennell) Straley -- not accepted
  Oenothera sessilis (Pennell) Munz -- not accepted
  Oenothera tetragona var. brevistipata (Pennell) Munz -- not accepted
  Oenothera tetragona var. longistipata (Pennell) Munz -- not accepted
  Oenothera tetragona var. velutina (Pennell) Munz -- not accepted
  Pagesia acuminata (Walter) Pennell -- not accepted
  Pedicularis anaticeps Pennell -- not accepted
  Pedicularis atrosanguinea Pennell & J.W. Thomp. -- not accepted
  Pedicularis attollens ssp. protogyna Pennell -- accepted -- little elephantshead
  Pedicularis bracteosa ssp. paysoniana (Pennell) W.A. Weber -- not accepted
  Pedicularis bracteosa var. atrosanguinea (Pennell & J.W. Thomp.) Cronquist -- accepted -- bracted lousewort
  Pedicularis bracteosa var. flavida (Pennell) Cronquist -- accepted -- towering lousewort
  Pedicularis bracteosa var. latifolia (Pennell) Cronquist -- accepted -- widepetal lousewort
  Pedicularis bracteosa var. pachyrhiza (Pennell) Cronquist -- accepted -- towering lousewort
  Pedicularis bracteosa var. paysoniana (Pennell) Cronquist -- accepted -- Payson's lousewort
  Pedicularis flavida Pennell -- not accepted
  Pedicularis langsdorffii ssp. arctica (R. Br.) Pennell -- accepted -- arctic lousewort
  Pedicularis langsdorfii ssp. arctica (R. Br.) Pennell -- not accepted -- arctic lousewort
  Pedicularis latifolia Pennell -- not accepted
  Pedicularis pachyrhiza Pennell -- not accepted
  Pedicularis paddoensis Pennell -- not accepted
  Pedicularis paysoniana Pennell -- not accepted
  Pedicularis puchella Pennell -- not accepted
  Pedicularis pulchella Pennell -- accepted -- mountain lousewort
  Pedicularis racemosa ssp. alba Pennell -- accepted -- sickletop lousewort
  Pedicularis racemosa var. alba (Pennell) Cronquist -- not accepted
  Pedicularis rainierensis Pennell & F.A. Warren -- accepted -- Mt. Rainier lousewort
  Pedicularis semibarbata ssp. charlestonensis (Pennell & Clokey) Clokey -- not accepted
  Pedicularis semibarbata var. charlestonensis Pennell & Clokey -- accepted -- Charleston lousewort, Charleston pinewood lousewort
  Pedicularis thompsonii Pennell -- not accepted
  Peniophyllum linifolium (Nutt.) Pennell -- not accepted
  Penstemon abietinus Pennell -- accepted -- firleaf beardtongue
  Penstemon aggregatus Pennell -- not accepted
  Penstemon alamosensis Pennell & G.T. Nisbet -- accepted -- Alamo beardtongue, Los Alamos beardtongue
  Penstemon alluviorum Pennell -- not accepted -- lowland beardtongue
  Penstemon alpinus ssp. magnus (Pennell) Penland -- not accepted
  Penstemon alpinus var. nagnus (Pennell) Penland -- not accepted
  Penstemon arkansanus Pennell -- accepted -- Arkansas beardtongue
  Penstemon arkansanus var. pubescens Pennell -- not accepted
  Penstemon attenuatus ssp. palustris (Pennell) D.D. Keck -- not accepted
  Penstemon attenuatus var. palustris (Pennell) Cronquist -- accepted -- sulphur beardtongue
  Penstemon auriberbis Pennell -- accepted -- Colorado beardtongue
  Penstemon australis ssp. laxiflorus (Pennell) R.W. Benn. -- not accepted -- Eustis Lake beardtongue
  Penstemon brevisepalus Pennell -- accepted
  Penstemon brittoniorum Pennell -- not accepted
  Penstemon buckleyi Pennell -- accepted -- Buckley's beardtongue, Buckley's penstemon
  Penstemon caespitosus ssp. perbrevis Pennell -- not accepted
  Penstemon caespitosus var. perbrevis (Pennell) N.H. Holmgren -- accepted -- mat penstemon
  Penstemon canescens var. brittoniorum (Pennell) Pennell -- not accepted
  Penstemon canescens var. typicus Pennell -- not accepted
  Penstemon carnosus Pennell -- accepted -- fleshy beardtongue
  Penstemon caryi Pennell -- accepted -- Cary beardtongue, Cary's beardtongue
  Penstemon cobaea ssp. purpureus (Pennell) Pennell -- not accepted
  Penstemon cobaea ssp. typicus Pennell -- not accepted
  Penstemon cobaea var. purpureus Pennell -- accepted -- cobaea beardtongue
  Penstemon congestus (M.E. Jones) Pennell -- not accepted
  Penstemon crandallii ssp. glabrescens (Pennell) D.D. Keck -- accepted -- Crandall's beardtongue
  Penstemon crandallii ssp. glabrescens var. glabrescens (Pennell) D.D. Keck -- not accepted -- Crandall's beardtongue
  Penstemon cyananthus ssp. longiflorus Pennell -- not accepted
  Penstemon cyananthus ssp. subglaber (A. Gray) Pennell -- not accepted
  Penstemon cyananthus var. longiflorus (Pennell) Neese -- not accepted
  Penstemon cyaneus Pennell -- accepted -- blue penstemon
  Penstemon deamii Pennell -- accepted -- Deam's beardtongue
  Penstemon decurvus Pennell ex Crosswh. -- not accepted
  Penstemon deustus ssp. heterander (Torr. & A. Gray) Pennell & D.D. Keck -- not accepted
  Penstemon deustus ssp. sudans (M.E. Jones) Pennell & D.D. Keck -- not accepted
  Penstemon deustus ssp. variabilis (Suksd.) Pennell & D.D. Keck -- not accepted
  Penstemon dolius M.E. Jones ex Pennell -- accepted -- Jone's penstemon, Jones' beardtongue
  Penstemon dolius var. dolius M.E. Jones ex Pennell -- not accepted -- Jones' beardtongue, Jones' penstemon
  Penstemon elegantulus Pennell -- accepted -- rockvine penstemon
  Penstemon eriantherus var. redactus Pennell & D.D. Keck -- accepted -- longsac penstemon
  Penstemon flavescens Pennell -- accepted -- high mountain penstemon
  Penstemon fruticosus ssp. scouleri (Lindl.) Pennell & D.D. Keck -- not accepted
  Penstemon garrettii Pennell -- not accepted -- Garrett's beardtongue
  Penstemon glaucinus Pennell -- accepted -- blueleaf beardtongue
  Penstemon globosus (Piper) Pennell & D.D. Keck -- accepted -- globe penstemon
  Penstemon gracilis ssp. wisconsinensis (Pennell) Pennell -- not accepted
  Penstemon gracilis var. wisconsinensis (Pennell) Fassett -- not accepted -- Wisconsin penstemon
  Penstemon guadalupensis var. ernstii (Pennell) Cory -- not accepted
  Penstemon humilis ssp. obtusifolius (Pennell) D.D. Keck -- not accepted -- low beardtongue
  Penstemon humilis var. obtusifolius (Pennell) Reveal -- accepted -- low beardtongue
  Penstemon jamesii ssp. ophianthus (Pennell) D.D. Keck -- not accepted
  Penstemon jonesi Pennell -- not accepted
  Penstemon laevigatus ssp. alluviorum (Pennell) R.W. Benn. -- not accepted
  Penstemon laevigatus ssp. deamii (Pennell) R.W. Benn. -- not accepted
  Penstemon laevigatus var. deamii (Pennell) R.W. Benn. -- not accepted
  Penstemon laevis Pennell -- accepted -- southwestern beardtongue, southwestern penstemon
  Penstemon laxiflorus Pennell -- accepted -- nodding beardtongue
  Penstemon leiophyllus Pennell -- accepted -- smoothleaf beardtongue, smoothleaf penstemon
  Penstemon leiophyllus var. leiophyllus Pennell -- accepted -- smoothleaf beardtongue, smoothleaf penstemon
  Penstemon lentus Pennell -- accepted -- handsome beardtongue, handsome penstemon
  Penstemon lentus var. lentus Pennell -- accepted -- handsome beardtongue
  Penstemon leptanthus Pennell -- not accepted -- Sevier Plateau beardtongue
  Penstemon longiflorus (Pennell) S.L. Clark -- accepted -- longflower penstemon
  Penstemon mensarum Pennell -- accepted -- tiger beardtongue
  Penstemon menziesii ssp. thompsonii Pennell & D.D. Keck -- not accepted
  Penstemon moffatii ssp. paysonii (Pennell) D.D. Keck -- not accepted -- Moffatt's beardtongue
  Penstemon multicaulis Pennell -- not accepted
  Penstemon nitidus ssp. polyphyllus Pennell -- not accepted
  Penstemon nitidus var. polyphyllus (Pennell) Cronquist -- accepted -- waxleaf penstemon
  Penstemon oklahomensis Pennell -- accepted -- Oklahoma beardtongue, Oklahoma penstemon
  Penstemon ophianthus Pennell -- accepted -- Arizona beardtongue, coiled anther penstemon
  Penstemon osterhoutii Pennell -- accepted -- Osterhout's beardtongue
  Penstemon pallidus ssp. arkansanus (Pennell) R.W. Benn. -- not accepted
  Penstemon parviflorus Pennell -- not accepted -- Montezuma County beardtongue
  Penstemon parvus Pennell -- accepted -- Aquarius Plateau beardtongue, small beardtongue
  Penstemon peckii Pennell -- accepted -- Peck's beardtongue
  Penstemon procerus ssp. brachyanthus (Pennell) D.D. Keck -- not accepted
  Penstemon procerus var. brachyanthus (Pennell) Cronquist -- accepted -- pincushion beardtongue
  Penstemon retrorsus Payson ex Pennell -- accepted -- Adobe Hills beardtongue
  Penstemon retrosus Payson ex Pennell -- not accepted
  Penstemon rydbergii ssp. aggregatus (Pennell) D.D. Keck -- not accepted
  Penstemon rydbergii var. aggregatus (Pennell) N.H. Holmgren -- accepted -- meadow beardtongue, meadow penstemon
  Penstemon saxosorum Pennell -- accepted -- upland beardtongue
  Penstemon scariosus Pennell -- accepted -- White River beardtongue
  Penstemon scariosus var. garrettii (Pennell) N.H. Holmgren -- accepted -- Garrett's beardtongue
  Penstemon scariosus var. scariosus Pennell -- accepted -- White River beardtongue
  Penstemon spatulatus Pennell -- accepted -- Wallowa beardtongue
  Penstemon strictus ssp. angustus Pennell -- not accepted
  Penstemon subserratus Pennell -- accepted -- finetooth beardtongue
  Penstemon tenuiflorus Pennell -- accepted -- eastern whiteflower beardtongue
  Penstemon tidestromii Pennell -- accepted -- Tidestrom beardtongue, Tidestrom's beardtongue
  Penstemon tolmiei ssp. brachyanthus (Pennell) D.D. Keck -- not accepted
  Penstemon triflorus ssp. integrifolius Pennell -- not accepted -- Heller's beardtongue
  Penstemon triflorus var. integrifolius (Pennell) Cory -- accepted -- Heller's beardtongue
  Penstemon uintahensis Pennell -- accepted -- Uinta Mountain beardtongue, Uintah beardtongue
  Penstemon versicolor Pennell -- accepted -- variable-color beardtongue
  Penstemon virens Pennell ex Rydb. -- accepted -- Front Range beardtongue
  Penstemon wherryi Pennell -- not accepted
  Penstemon whitedii ssp. tristis Pennell & D.D. Keck -- not accepted
  Penstemon wisconsinensis Pennell -- not accepted
  Penstemon X jonesii Pennell (pro. sp.) -- accepted -- Jones' penstemon
  Polygala pretzii Pennell -- not accepted
  Polygala verticillata var. sphenostachya Pennell -- not accepted -- whorled milkwort
  Rhexia interior Pennell -- not accepted
  Rhexia mariana var. interior (Pennell) Kral & Bostick -- accepted -- Maryland meadowbeauty
  Rhinanthus arcticus (Sterneck) Pennell -- not accepted
  Rhinanthus borealis ssp. kyrollae (Chabert) Pennell -- not accepted
  Rhinanthus borealis ssp. kyrolliae (Chabert) Pennell -- not accepted
  Sairocarpus multiflorus (Pennell) D.A. Sutton -- accepted -- Sierra snapdragon
  Schistophragma intermedia (A. Gray) Pennell -- not accepted -- harlequin spiralseed
  Schistophragma intermedium (A. Gray) Pennell -- accepted -- harlequin spiralseed
  Schwalbea americana var. australis (Pennell) Reveal & C.R. Broome -- not accepted
  Schwalbea australis Pennell -- not accepted
  Scrophularia atrata Pennell -- accepted -- black-flowered figwort, darkflowered figwort
  Scrophularia californica var. oregana (Pennell) B. Boivin -- not accepted
  Scrophularia davidsonii Pennell -- not accepted
  Scrophularia minutiflora Pennell -- accepted -- littleflower figwort
  Scrophularia multiflora Pennell -- not accepted
  Scrophularia oregana Pennell -- not accepted -- Oregon figwort
  Scrophularia villosa Pennell -- accepted -- Santa Catalina figwort
  Seymeria harvardii (Pennell) Pennell -- not accepted
  Seymeria havardii (Pennell) Standl. -- not accepted
  Seymeria pectinata ssp. peninsularis (Pennell) Pennell -- accepted -- piedmont blacksenna
  Seymeria texana (A. Gray) Pennell -- accepted -- Texas blacksenna
  Smilax biltmoreana (Small) J.B. Norton ex Pennell -- accepted -- Biltmore's carrionflower
  Smilax hugeri (Small) J.B. Norton ex Pennell -- accepted -- Huger's carrionflower
  Smilax leptanthera Pennell -- not accepted
  Stemodia arizonica Pennell -- not accepted
  Synthyris borealis Pennell -- accepted -- northern kittentails
  Synthyris canbyi Pennell -- accepted -- Mission Mountain kittentails
  Synthyris cymopteroides Pennell -- not accepted
  Synthyris hendersonii Pennell -- not accepted
  Synthyris laciniata ssp. ibapahensis Pennell -- not accepted
  Synthyris lanuginosa (Piper) Pennell & J.W. Thomp. -- accepted -- featherleaf kittentails
  Synthyris missurica (Raf.) Pennell -- accepted -- tailed kittentails
  Synthyris missurica ssp. hirsuta Pennell -- not accepted -- western mountain kittentails
  Synthyris missurica ssp. major (Hook.) Pennell -- accepted
  Synthyris missurica ssp. missurica (Raf.) Pennell -- accepted -- tailed kittentails
  Synthyris missurica ssp. stellata (Pennell) Kartesz & Gandhi -- accepted -- western mountain kittentails
  Synthyris missurica var. major (Hook.) Pennell ex R.J. Davis -- not accepted
  Synthyris oblongifolia (Pennell) L. Hufford & M. McMahon -- accepted -- eggleaf kittentails
  Synthyris paysonii Pennell & L.O. Williams -- not accepted
  Synthyris pinnatifida var. canescens (Pennell) Cronquist -- not accepted -- hairy kittentails
  Synthyris platycarpa Gail & Pennell -- accepted -- Idaho kittentails
  Synthyris ranunculina Pennell -- accepted -- Charleston Mountain kittentails
  Synthyris stellata Pennell -- not accepted
  Tomanthera caddoensis (Pennell) -- not accepted -- Caddo purple false-foxglove
  Tomanthera densiflora (Benth.) Pennell -- not accepted
  Tomanthera pseudaphylla (Pennell) -- not accepted -- Shinner's false-foxglove
  Tragiola pilosa (Michx.) Small & Pennell -- not accepted
  Tragiola pilosa ssp. epilis (Pennell) Pennell -- not accepted
  Veronica catenata Pennell -- accepted -- chain speedwell, sessile water-speedwell
  Veronica catenata var. glandulosa (Farw.) Pennell -- not accepted
  Veronica comosa var. glaberrima (Pennell) B. Boivin -- not accepted
  Veronica connata ssp. glaberrima Pennell -- not accepted
  Veronica connata var. glaberrima (Pennell) Fernald -- not accepted
  Veronica connata var. typica Pennell -- not accepted
  Veronica glandifera Pennell -- not accepted
  Veronica peregrina ssp. xalapensis (Kunth) Pennell -- not accepted -- hairy purslane speedwell, neckweed
  Veronica peregrina var. typica Pennell -- not accepted
  Veronica peregrina var. xalapensis (Kunth) Pennell -- not accepted
  Veronica wormskjoldii ssp. alterniflora (Fernald) Pennell -- not accepted
  Veronica wormskjoldii ssp. nutans (Bong.) Pennell -- accepted -- American alpine speedwell
   

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