Agoseris monticola Greene (original description)
Antennaria alsinoides Greene (original description)
Antennaria borealis Greene (original description)
Antennaria confinis Greene accepted as Antennaria rosea subsp. confinis (Greene) R.J.Bayer (original description)
Antennaria holmii Greene (original description)
Antennaria nardina Greene (original description)
Antennaria nardinae Greene (original description)
Antennaria nemoralis Greene accepted as Antennaria plantaginifolia (L.) Richardson (original description)
Antennaria oxyphylla Greene accepted as Antennaria rosea subsp. rosea Greene (original description)
Antennaria propinqua Greene (original description)
Antennaria sordida Greene accepted as Antennaria rosea subsp. confinis (Greene) R.J.Bayer (original description)
Arnica arnoglossa Greene accepted as Arnica lonchophylla Greene (original description)
Arnica attenuata Greene accepted as Arnica angustifolia subsp. angustifolia Vahl (original description)
Arnica bernardina Greene accepted as Arnica chamissonis Less. (original description)
Arnica betonicifolia Greene accepted as Arnica latifolia Bong. (original description)
Arnica chionophila Greene accepted as Arnica cordifolia Hook. (original description)
Arnica columbiana Greene accepted as Arnica chamissonis Less. (original description)
Arnica crocea Greene accepted as Arnica mollis Hook. (original description)
Arnica diversifolia Greene accepted as Arnica ovata Greene (original description)
Arnica grandifolia Greene accepted as Arnica latifolia Bong. (original description)
Arnica incana (A.Gray) Greene accepted as Arnica chamissonis Less. (original description)
Arnica lessingii (Torr. & A.Gray) Greene (original description)
Arnica lonchophylla Greene (original description)
Arnica macilenta Greene accepted as Arnica chamissonis Less. (original description)
Arnica macounii Greene accepted as Pentacalia amplexicaulis (Kunth) Cuatrec. (original description)
Arnica merriamii Greene accepted as Arnica mollis Hook. (original description)
Arnica multiflora Greene accepted as Arnica gracilis Rydb. (original description)
Arnica ovalifolia Greene (original description)
Arnica ovata Greene (original description)
Arnica rivularis Greene accepted as Arnica mollis Hook. (original description)
Arnica rydbergii Greene (original description)
Arnica scaberrima Greene accepted as Arnica mollis Hook. (original description)
Arnica subcordata Greene accepted as Arnica cordifolia Hook. (original description)
Arnica teucriifolia Greene accepted as Arnica latifolia Bong. (original description)
Arnica tomentella Greene accepted as Arnica nevadensis A.Gray (original description)
Arnica tomentosa J.M.Macoun ex Greene (original description)
Arnica ventorum Greene accepted as Arnica latifolia Bong. (original description)
Aster adsurgens Greene (original description)
Aster armeriifolius Greene accepted as Symphyotrichum ascendens (Lindl.) G.L.Nesom (original description)
Aster distichophyllus Greene (original description)
Aster ensatus Greene (original description)
Aster exsul Greene (original description)
Aster fulcratus Greene (original description)
Aster glastifolius Greene (original description)
Aster laetevirens Greene accepted as Symphyotrichum lanceolatum (Willd.) G.L.Nesom (original description)
Aster limoniifolius Greene (original description)
Aster limosus Greene (original description)
Aster majusculus Greene (original description)
Aster nelsonii Greene (original description)
Aster oxylepis Greene (original description)
Aster pratincola Greene (original description)
Aster proximus Greene (original description)
Aster spithamaeus Greene (original description)
Aster vallicola Greene accepted as Symphyotrichum spathulatum var. intermedium (A.Gray) G.L.Nesom (original description)
Aster violaceus Greene (original description)
Bidens amplissima Greene (original description)
Bidens ciliolata Greene accepted as Bidens cernua L. (original description)
Bidens cusickii Greene accepted as Bidens cernua L. (original description)
Bidens elegans Greene accepted as Bidens laevis (L.) Britton, Sterns & Poggenb. (original description)
Bidens expansa Greene accepted as Bidens laevis (L.) Britton, Sterns & Poggenb. (original description)
Bidens formosa Greene accepted as Bidens laevis (L.) Britton, Sterns & Poggenb. (original description)
Bidens glaucescens Greene accepted as Bidens campylotheca subsp. pentamera (Sherff) Ganders & Nagata (original description)
Bidens gracilenta Greene accepted as Bidens cernua L. (original description)
Bidens hyperborea Greene (original description)
Bidens kelloggii Greene accepted as Bidens cernua L. (original description)
Bidens leptomeria Greene accepted as Bidens cernua L. (original description)
Bidens leptopoda Greene accepted as Bidens cernua L. (original description)
Bidens lonchophylla Greene accepted as Bidens cernua L. (original description)
Bidens lugens Greene accepted as Bidens laevis (L.) Britton, Sterns & Poggenb. (original description)
Bidens macounii Greene accepted as Bidens cernua L. (original description)
Bidens marginata Greene accepted as Bidens cernua L. (original description)
Bidens parryi Greene accepted as Bidens laevis (L.) Britton, Sterns & Poggenb. (original description)
Bidens persicifolia Greene accepted as Bidens laevis (L.) Britton, Sterns & Poggenb. (original description)
Bidens prionophylla Greene accepted as Bidens cernua L. (original description)
Bidens riparia Greene accepted as Bidens comosa (A.Gray) Wiegand (original description)
Bidens vulgata Greene (original description)
Bidens vulgata var. puberula (Wiegand) Greene accepted as Bidens vulgata Greene (original description)
Chaenactis pedicularia Greene accepted as Chaenactis douglasii var. douglasii (Hook.) Hook. & Arn. (original description)
Chrysopsis bakeri Greene accepted as Heterotheca villosa var. minor (Hook.) Semple (original description)
Chrysopsis hirsutissima Greene accepted as Heterotheca villosa var. minor (Hook.) Semple (original description)
Chrysopsis pedunculata Greene accepted as Heterotheca villosa var. pedunculata (Greene) V.L.Harms ex Semple (original description)
Chrysothamnus arizonicus (Greene) Greene accepted as Ericameria nauseosa var. latisquamea (A.Gray) G.L.Nesom & G.I.Baird (original description)
Chrysothamnus bakeri Greene accepted as Chrysothamnus vaseyi (A.Gray) Greene (original description)
Chrysothamnus formosus Greene accepted as Ericameria nauseosa var. speciosa (Nutt.) G.L.Nesom & G.I.Baird (original description)
Chrysothamnus gnaphalodes (Greene) Greene accepted as Ericameria nauseosa var. hololeuca (A.Gray) G.L.Nesom & G.I.Baird (original description)
Chrysothamnus latisquameus (A.Gray) Greene accepted as Ericameria nauseosa var. latisquamea (A.Gray) G.L.Nesom & G.I.Baird (original description)
Chrysothamnus plattensis (Greene) Greene (original description)
Coleosanthus abbreviatus Greene accepted as Brickellia oblongifolia Nutt. (original description)
Coleosanthus nepetifolius Greene (original description)
Conoclinium nepetifolium Greene accepted as Conoclinium coelestinum (L.) DC. (original description)
Coreopsis angustata Greene (original description)
Erigeron accedens Greene accepted as Erigeron divergens Torr. & A.Gray (original description)
Erigeron gormanii Greene accepted as Erigeron compositus Pursh (original description)
Erigeron purpuratus Greene (original description)
Erigeron setulosus Greene accepted as Erigeron concinnus var. concinnus (Hook. & Arn.) Torr. & A.Gray (original description)
Eucephalus formosus Greene accepted as Herrickia glauca var. glauca (Nutt.) Brouillet (original description)
Eucephalus macounii Greene accepted as Eucephalus glaucescens (A.Gray) Greene (original description)
Eupatorium eurybiifolium Greene accepted as Ageratina altissima (L.) R.M.King & H.Rob. (original description)
Grindelia subincisa Greene accepted as Grindelia decumbens Greene (original description)
Gutierrezia divergens Greene accepted as Gutierrezia californica (DC.) Torr. & A.Gray (original description)