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Taxon author: M.C. Johnst.

ITIS records citing taxon author "M.C. Johnst."
 
 Kingdom Plantae
  Andrachne arida (Warnock & M.C. Johnst.) G.L. Webster -- not accepted -- Trans-Pecos maidenbush
  Atriplex klebergorum M.C. Johnst. -- accepted -- Kleberg's saltbush
  Berberis trifoliata var. glauca (I.M. Johnst.) M.C. Johnst. -- not accepted
  Berberis trifoliolata var. glauca (I.M. Johnst.) M.C. Johnst. ex Laferr. -- not accepted
  Bouteloua chihuahuana (M.C. Johnst.) Columbus -- accepted
  Bouteloua rigidiseta var. chihuahuana M.C. Johnst. -- not accepted
  Ceanothus velutinus ssp. hookeri (M.C. Johnst.) C.L. Schmidt -- not accepted -- Hooker's ceanothus
  Ceanothus velutinus var. hookeri M.C. Johnst. -- accepted -- Hooker's ceanothus
  Celtis spinosa var. pallida (Torr.) M.C. Johnst. -- not accepted
  Cenchrus longisetus M.C. Johnst. -- accepted
  Chamaesyce crepitata var. longa (M.C. Johnst.) Mayfield -- not accepted
  Chamaesyce fruticulosa var. hirtella (M.C. Johnst.) Mayfield -- not accepted
  Chamaesyce geyeri var. wheeleriana (Warnock & M.C. Johnst.) Mayfield -- not accepted -- Geyer's sandmat
  Chamaesyce jejuna (M.C. Johnst. & Warnock) Shinners -- not accepted -- dwarf sandmat
  Chamaesyce scopulorum var. inornata (M.C. Johnst.) V.S. Raju & P.N. Rao -- not accepted
  Chamaesyce scopulorum var. nuda (M.C. Johnst.) V.S. Raju & P.N. Rao -- not accepted
  Chamaesyce spurca (M.C. Johnst.) B.L. Turner -- not accepted
  Chamaesyce stictospora var. sublaevis (M.C. Johnst.) V.S. Raju & P.N. Rao -- not accepted
  Chamaesyce theriaca var. spurca (M.C. Johnst.) Mayfield -- not accepted
  Colubrina cubensis var. floridana M.C. Johnst. -- accepted -- Cuban nakedwood
  Colubrina glandulosa var. antillana (M.C. Johnst.) M.C. Johnst. -- accepted -- glandular nakedwood
  Colubrina greggii var. yucatanensis M.C. Johnst. -- not accepted -- Yucatan nakedwood
  Colubrina rufa var. antillana M.C. Johnst. -- not accepted
  Colubrina stricta Engelm. ex M.C. Johnst. -- accepted -- Comal nakedwood, Comal snakewood
  Colubrina texensis var. pedunculata M.C. Johnst. -- accepted -- hogplum, Texan hogplum
  Colubrina urbanii M.C. Johnst. -- not accepted
  Colubrina verrucosa (Urb.) M.C. Johnst. -- accepted -- Urban's nakedwood
  Condalia correllii M.C. Johnst. -- accepted -- bluewood, Correll's snakewood
  Condalia ericoides (A. Gray) M.C. Johnst. -- accepted -- javelina bush
  Condalia hookeri M.C. Johnst. -- accepted -- bluewood, Brazilian bluewood, lotebush
  Condalia hookeri var. edwardsiana (Cory) M.C. Johnst. -- accepted -- bluewood condalia, Edwards' bluewood, Edwards' brasil
  Condalia hookeri var. hookeri M.C. Johnst. -- accepted -- Brazilian bluewood, Hooker's bluewood
  Condalia warnockii M.C. Johnst. -- accepted -- Warnock's condalia, Warnock's snakewood
  Condalia warnockii var. kearneyana M.C. Johnst. -- accepted -- Kearney's condalia, Kearney's snakewood
  Condalia warnockii var. warnockii M.C. Johnst. -- accepted -- Warnock's snakewood
  Croton corymbulosus var. thermophilus M.C. Johnst. -- not accepted
  Croton lindheimerianus var. tharpii M.C. Johnst. -- accepted -- Tharp's croton, Tharp's threeseed croton
  Croton pottsii var. thermophilus (M.C. Johnst.) M.C. Johnst. -- accepted -- leatherweed
  Cyperus huarmensis (Kunth) M.C. Johnst. -- not accepted
  Cyperus onerosus M.C. Johnst. -- accepted -- flat dune sedge, plains flatsedge
  Dichondra donelliana Tharp & M.C. Johnst. -- accepted -- California ponysfoot
  Dichondra donnelliana Tharp & M.C. Johnst. -- not accepted -- California dichondra, California ponysfoot
  Dichondra recurvata Tharp & M.C. Johnst. -- accepted -- oakwoods ponysfoot
  Dyssodia aurea var. polychaeta (A. Gray) M.C. Johnst. -- not accepted
  Dyssodia setifolia var. greggii (A. Gray) M.C. Johnst. -- not accepted
  Echeandia chandleri (Greenm. & C.H. Thomp.) M.C. Johnst. -- accepted -- Chandler's craglily
  Eleocharis austrotexana M.C. Johnst. -- not accepted -- Rio Grande spikerush
  Ericameria austrotexana M.C. Johnst. -- not accepted
  Euphorbia beamanii M.C. Johnst. -- accepted
  Euphorbia brachycera var. greggii (Engelm. ex Boiss.) M.C. Johnst. -- not accepted
  Euphorbia chaetocalyx var. triligulata (L.C. Wheeler) M.C. Johnst. -- accepted -- bristlecup sandmat, Triligulate bristlecup sandmat
  Euphorbia correllii M.C. Johnst. -- accepted
  Euphorbia crepitata var. longa M.C. Johnst. -- accepted
  Euphorbia cressoides M.C. Johnst. -- accepted
  Euphorbia exstipulata var. lata Warnock & M.C. Johnst. -- not accepted -- squareseed spurge
  Euphorbia fruticulosa var. hirtella M.C. Johnst. -- accepted
  Euphorbia furcillata var. ribana M.C. Johnst. -- not accepted
  Euphorbia geyeri var. wheeleriana Warnock & M.C. Johnst. -- accepted -- Geyer's sandmat
  Euphorbia henricksonii M.C. Johnst. -- accepted
  Euphorbia ivanjohnstonii M.C. Johnst. -- accepted
  Euphorbia jejuna M.C. Johnst. & Warnock -- accepted -- dwarf broomspurge, dwarf sandmat
  Euphorbia mcvaughiana M.C. Johnst. -- accepted
  Euphorbia mcvaughii M.C. Johnst. -- not accepted
  Euphorbia neilmulleri M.C. Johnst. -- accepted
  Euphorbia perennans (Shinners) Warnock & M.C. Johnst. -- accepted -- perennial sandmat, Terlingua spurge
  Euphorbia pinkavana M.C. Johnst. -- accepted
  Euphorbia scopulorum var. inornata M.C. Johnst. -- accepted
  Euphorbia scopulorum var. nuda M.C. Johnst. -- accepted
  Euphorbia simulans (L.C. Wheeler) Warnock & M.C. Johnst. -- accepted -- mimicking sandmat, similar spurge
  Euphorbia stictospora var. sublaevis M.C. Johnst. -- accepted
  Euphorbia theriaca var. spurca M.C. Johnst. -- accepted -- Terlingua sandmat
  Forestiera segregata var. pinetorum (Small) M.C. Johnst. -- accepted -- Florida swampprivet
  Frangula sphaerosperma ssp. longipes (M.C. Johnst. & L.A. Johnst.) Kartesz & Gandhi -- not accepted -- West Indian buckthorn
  Isolepis molesta (M.C. Johnst.) S.G. Sm. -- not accepted -- Gulf Coast bulrush
  Juncus validus var. fascinatus M.C. Johnst. -- accepted -- roundhead rush
  Paronychia jonesii M.C. Johnst. -- accepted -- Jones' nailwort
  Phoradendron leucarpum (Raf.) Reveal & M.C. Johnst. -- not accepted -- oak mistletoe
  Phoradendron serotinum (Raf.) M.C. Johnst. -- accepted -- oak mistletoe
  Phoradendron serotinum ssp. serotinum (Raf.) M.C. Johnst. -- accepted -- oak mistletoe
  Phoradendron serotinum var. macrotomum (Trel.) M.C. Johnst. -- not accepted
  Phoradendron serotinum var. pubescens (Engelm. ex A. Gray) M.C. Johnst. -- not accepted
  Phyllanthopsis arida (Warnock & M.C. Johnst.) Voronts. & Petra Hoffm. -- accepted
  Polygonum striatulum var. texense (M.C. Johnst.) Costea & Tardif -- not accepted
  Polygonum texense M.C. Johnst. -- not accepted
  Prosopis glandulosa var. torreyana (L.D. Benson) M.C. Johnst. -- accepted -- western honey mesquite
  Prosopis laevigata (Humb. & Bonpl. ex Willd.) M.C. Johnst. -- accepted -- smooth mesquite
  Rhamnus sphaerosperma var. longipes M.C. Johnst. & L.A. Johnst. -- accepted -- West Indian buckthorn
  Rhynchosia senna var. texana (Torr. & A. Gray) M.C. Johnst. -- accepted -- rosary bean, Texas snoutbean
  Sageretia thea (Osbeck) M.C. Johnst. -- accepted -- mock buckthorn, pauper's-tea
  Savia arida Warnock & M.C. Johnst. -- not accepted
  Scirpus molestus M.C. Johnst. -- not accepted
  Senecio douglasii var. jamesii (Torr. & A. Gray) Ediger ex Correll & M.C. Johnst. -- not accepted
  Sisymbrium shinnersii M.C. Johnst. -- not accepted
  Solidago altissima var. canescens (A. Gray) M.C. Johnst. -- not accepted
  Solidago altissima var. pluricephala M.C. Johnst. -- not accepted
  Thelypodiopsis shinnersii (M.C. Johnst.) Rollins -- accepted -- Rio Grande tumblemustard
  Thelypodium shinnersii (M.C. Johnst.) Rollins -- not accepted
  Tithymalus beamanii (M.C. Johnst.) SojŠk -- not accepted
  Tithymalus correllii (M.C. Johnst.) SojŠk -- not accepted
  Tithymalus cressoides (M.C. Johnst.) SojŠk -- not accepted
  Tithymalus ivanjohnstonii (M.C. Johnst.) SojŠk -- not accepted
  Tithymalus mcvaughianus (M.C. Johnst.) SojŠk -- not accepted
  Tithymalus neilmulleri (M.C. Johnst.) SojŠk -- not accepted
  Tithymalus pinkavanus (M.C. Johnst.) SojŠk -- not accepted
  Viguiera ludens (Shinners) M.C. Johnst. -- not accepted
  Ziziphus obtusifolia var. canescens (A. Gray) M.C. Johnst. -- accepted -- grayleaf condalia, graythorn, lotebush
  Ziziphus taylorii (Britton) M.C. Johnst. -- accepted -- Taylor's jujube
   

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