Actinella acaulis var. glabra (A.Gray) A.Gray accepted as Tetraneuris herbacea Greene (original description)
Ageratum subg. Caelestinum (Cass.) A.Gray (original description)
Aster ericifolius var. tenuis A.Gray (original description)
Aster salicifolius var. coerulescens (DC.) A.Gray accepted as Symphyotrichum praealtum var. praealtum (Poir.) G.L.Nesom (original description)
Aster sect. Heterophylli (Nees) A.Gray (original description)
Aster sect. Sagittiferi A.Gray accepted as Ampelaster G.L.Nesom (original description)
Aster subsect. Homophyllis A.Gray (original description)
Bahia sect. Platyschkuhria (A.Gray) A.Gray accepted as Platyschkuhria (A.Gray) Rydb. (original description)
Bigelowia mohavensis Greene accepted as Ericameria nauseosa var. mohavensis (Greene) G.L.Nesom & G.I.Baird (original description)
Boltonia asteroides var. decurrens (Torr. & A.Gray) Engelm. ex A.Gray accepted as Boltonia decurrens (Torr. & A.Gray) Alph.Wood (original description)
Brickellia wrightii var. tenera (A.Gray) A.Gray accepted as Brickellia californica (Torr. & A.Gray) A.Gray (original description)
Chrysopsis villosa var. stenophylla (A.Gray) A.Gray accepted as Heterotheca stenophylla (A.Gray) Shinners (original description)
Coreopsis sect. Silphidium (Torr. & A.Gray) A.Gray (original description)
Eupatorium perfoliatum var. truncatum (Muhl. ex Willd.) A.Gray accepted as Eupatorium perfoliatum L. (original description)
Evax caulescens var. petiolata A.Gray accepted as Hesperevax caulescens (Benth.) A.Gray (original description)
Haplopappus carthamoides var. cusickii A.Gray accepted as Pyrrocoma carthamoides var. cusickii (A.Gray) Kartesz & Gandhi (original description)
Haplopappus carthamoides var. maximus A.Gray accepted as Pyrrocoma radiata Nutt. (original description)
Haplopappus fremontii (A.Gray) accepted as Oonopsis foliosa var. foliosa (A.Gray) Greene (original description)
Haplopappus fremontii var. wardii A.Gray accepted as Oonopsis wardii (A.Gray) Greene (original description)
Haplopappus lanceolatus var. tenuicaulis (D.C.Eaton) A.Gray accepted as Pyrrocoma lanceolata var. lanceolata (Hook.) Greene (original description)
Haplopappus nanus var. cervinus (S.Watson) A.Gray (original description)
Haplopappus parryi var. minor A.Gray (original description)
Haplopappus racemosus var. glomerellus (Nutt.) A.Gray accepted as Pyrrocoma racemosa var. paniculata (Nutt.) Kartesz & Gandhi (original description)
Haplopappus racemosus var. virgatus (A.Gray) A.Gray (original description)
Haplopappus rubiginosus var. phyllocephalus (DC.) A.Gray accepted as Rayjacksonia phyllocephala (DC.) R.L.Hartm. & M.A.Lane (original description)
Iva sect. Chorisiva A.Gray accepted as Iva L. (original description)
Microseris sect. Nothocalais A.Gray accepted as Nothocalais (A.Gray) Greene (original description)
Perityle californica var. nuda (Torr.) A.Gray (original description)
Rudbeckia sect. Dracopis (Cass.) A.Gray accepted as Rudbeckia L. (original description)
Senecio lyonii A.Gray (original description)
Solidago juncea var. scabrella (Torr. & A.Gray) A.Gray accepted as Solidago juncea Aiton (original description)
Taraxacum officinale var. scopulorum A.Gray accepted as Taraxacum scopulorum (A.Gray) Rydb. (original description)
Vernonia altissima var. grandiflora A.Gray (original description)
Vernonia angustifolia var. scaberrima (Nutt.) A.Gray accepted as Vernonia angustifolia subsp. scaberrima (Nutt.) S.B.Jones & W.Z.Faust (original description)
Vernonia angustifolia var. texana A.Gray accepted as Vernonia texana (A.Gray) Small (original description)