Aphanostephus arkansanus (DC.) A.Gray accepted as Aphanostephus skirrhobasis (DC.) Trel. ex Coville & Branner (original description)
Aphanostephus humilis (Benth.) A.Gray accepted as Aphanostephus ramosissimus var. humilis (Benth.) B.L.Turner & Birdsong (original description)
Baccharis wrightii A.Gray (original description)
Bahia pedata A.Gray accepted as Hymenothrix pedata (A.Gray) B.G.Baldwin (original description)
Bellis mexicana A.Gray accepted as Astranthium mexicanum (A.Gray) Larsen (original description)
Bolanosa A.Gray (original description)
Brickellia baccharidea A.Gray (original description)
Brickellia brachyphylla (A.Gray) A.Gray (original description)
Brickellia cavanillesii (Cass.) A.Gray (original description)
Brickellia corymbosa (DC.) A.Gray (original description)
Brickellia coulteri A.Gray (original description)
Brickellia diffusa (Vahl) A.Gray (original description)
Brickellia galeottii A.Gray accepted as Brickellia veronicaefolia (Kunth) A.Gray (original description)
Brickellia hartwegii A.Gray accepted as Brickellia paniculata (Mill.) B.L.Rob. (original description)
Brickellia hebecarpa (DC.) A.Gray (original description)
Brickellia laciniata A.Gray (original description)
Brickellia lanata (DC.) A.Gray (original description)
Brickellia microphylla (Nutt.) A.Gray (original description)
Brickellia oliganthes (Less.) A.Gray (original description)
Brickellia parvula A.Gray (original description)
Brickellia pendula (Schrad.) A.Gray (original description)
Brickellia pinifolia (Gardner) A.Gray accepted as Pseudobrickellia brasiliensis (Spreng.) R.M.King & H.Rob. (original description)
Brickellia reniformis A.Gray accepted as Brickellia californica (Torr. & A.Gray) A.Gray (original description)
Brickellia reticulata (DC.) A.Gray (original description)
Brickellia riddellii (Torr. & A.Gray) A.Gray accepted as Brickellia dentata (DC.) Sch.Bip. (original description)
Brickellia scoparia (DC.) A.Gray (original description)
Brickellia secundiflora (Lag.) A.Gray (original description)
Brickellia spinulosa (A.Gray) A.Gray (original description)
Brickellia tomentella A.Gray (original description)
Brickellia veronicifolia (Kunth) A.Gray accepted as Brickellia veronicaefolia (Kunth) A.Gray (original description)
Carphephorus triangularis (DC.) A.Gray accepted as Eupatoriastrum triangulare (DC.) B.L.Rob. (original description)
Carphochaete bigelovii A.Gray (original description)
Carphochaete grahamii A.Gray (original description)
Conoclinium betonicum var. integrifolium A.Gray accepted as Conoclinium betonicifolium var. integrifolium (A.Gray) T.F.Patt. (original description)
Conoclinium dissectum A.Gray accepted as Conoclinium greggii (A.Gray) Small (original description)
Electra galeottii A.Gray accepted as Coreopsis mutica var. subvillosa DC. (original description)
Eupatorium pedunculosum (DC.) A.Gray accepted as Phanerostylis pedunculosa (DC.) R.M.King & H.Rob. (original description)
Eupatorium solidaginifolium A.Gray accepted as Koanophyllon solidaginifolium (A.Gray) R.M.King & H.Rob. (original description)
Eupatorium subuligerum A.Gray accepted as Barroetea subuligera A.Gray (original description)
Eupatorium wrightii A.Gray accepted as Ageratina wrightii (A.Gray) R.M.King & H.Rob. (original description)
Gnaphalium microcephalum A.Gray accepted as Pseudognaphalium canescens (DC.) Anderb. (original description)
Grindelia squarrosa var. grandiflora (Hook.) A.Gray accepted as Grindelia squarrosa (Pursh) Dunal (original description)
Guardiola atriplicifolia A.Gray accepted as Guardiola mexicana Bonpl. (original description)
Gutierrezia alamanii A.Gray (original description)
Gutierrezia eriocarpa A.Gray accepted as Gutierrezia sphaerocephala A.Gray (original description)
Heterosperma dicranocarpum A.Gray accepted as Dicranocarpus parviflorus (A.Gray) A.Gray (original description)
Hymenatherum acerosum (DC.) A.Gray accepted as Thymophylla acerosa (DC.) Strother (original description)
Hymenatherum boeberoides A.Gray accepted as Thymophylla tenuifolia (Cass.) Rydb. (original description)
Hymenatherum diffusum A.Gray accepted as Thymophylla tenuifolia (Cass.) Rydb. (original description)
Hymenatherum polychaetum A.Gray accepted as Thymophylla aurea var. polychaeta (A.Gray) Strother (original description)
Iva dealbata A.Gray accepted as Leuciva dealbata (A.Gray) Rydb. (original description)
Laphamia A.Gray accepted as Perityle Benth. (original description)
Laphamia angustifolia A.Gray accepted as Perityle angustifolia (A.Gray) Shinners (original description)
Laphamia halimifolia A.Gray accepted as Perityle lindheimeri var. halimifolia (A.Gray) A.M.Powell (original description)
Laphamia lindheimeri A.Gray accepted as Perityle lindheimeri (A.Gray) Shinners (original description)
Laphamia rupestris A.Gray accepted as Perityle rupestris var. rupestris (A.Gray) Shinners (original description)
Laphamia sect. Pappothrix A.Gray accepted as Perityle Benth. (original description)
Laphamia subg. Monothrix A.Gray (original description)
Lepachys columnaris var. tagetes (E.James) A.Gray accepted as Ratibida tagetes (E.James) Barnhart (original description)
Lepachys peduncularis var. picta A.Gray accepted as Ratibida peduncularis var. picta (A.Gray) (original description)
Linosyris coronopifolia A.Gray accepted as Isocoma coronopifolia (A.Gray) Greene (original description)
Linosyris heterophylla A.Gray accepted as Isocoma pluriflora (Torr. & A.Gray) Greene (original description)
Linosyris hirtella A.Gray accepted as Isocoma pluriflora (Torr. & A.Gray) Greene (original description)
Linosyris pulchella A.Gray accepted as Lorandersonia pulchella (A.Gray) Urbatsch, R.P.Roberts & Neubig (original description)
Linosyris ramulosa (DC.) A.Gray accepted as Baccharis pteronioides DC. (original description)
Linosyris wrightii A.Gray accepted as Isocoma pluriflora (Torr. & A.Gray) Greene (original description)
Machaeranthera canescens A.Gray (original description)
Nicolletia edwardsii A.Gray (original description)
Palafoxia lindenii A.Gray (original description)
Perezia adnata A.Gray accepted as Acourtia humboldtii (Less.) B.L.Turner (original description)
Perezia hebeclada (DC.) A.Gray accepted as Acourtia cordata (Cerv.) B.L.Turner (original description)
Perezia microcephala (DC.) A.Gray accepted as Acourtia microcephala DC. (original description)
Perezia nudicaulis A.Gray accepted as Acourtia nudicaulis (A.Gray) B.L.Turner (original description)
Perezia patens A.Gray accepted as Acourtia patens (A.Gray) Reveal & R.M.King (original description)
Perezia rigida (DC.) A.Gray accepted as Acourtia fruticosa (La Llave & Lex.) B.L.Turner (original description)
Perezia seemannii A.Gray accepted as Acourtia fruticosa (La Llave & Lex.) B.L.Turner (original description)
Perezia wrightii A.Gray accepted as Acourtia wrightii (A.Gray) Reveal & R.M.King (original description)
Porophyllum amplexicaule Engelm. ex A.Gray (original description)
Porophyllum greggii A.Gray (original description)
Porophyllum scoparium A.Gray (original description)
Pterigeron A.Gray (original description)
Sanvitalia angustifolia Engelm. ex A.Gray accepted as Sanvitalia procumbens Lam. (original description)
Sartwellia A.Gray (original description)
Sartwellia flaveriae A.Gray (original description)
Simsia sanguinea A.Gray (original description)
Solidago radula var. rotundifolia (DC.) A.Gray accepted as Solidago radula Nutt. (original description)
Tessaria borealis A.Gray (original description)
Thelesperma longipes A.Gray (original description)
Thymophylla greggii var. radiata A.Gray accepted as Thymophylla setifolia var. greggii (A.Gray) Strother (original description)
Trichocoronis greggii A.Gray accepted as Trichocoronis sessilifolia (S.Schauer) B.L.Rob. (original description)
Varilla texana A.Gray (original description)
Vernonia rugeliana Shuttlew. ex A.Gray accepted as Vernonia noveboracensis (L.) Michx. (original description)
Viguiera cordifolia A.Gray accepted as Aldama cordifolia (A.Gray) E.E.Schill. & Panero (original description)
Zexmenia brevifolia A.Gray accepted as Jefea brevifolia (A.Gray) Strother (original description)
Zexmenia crocea A.Gray accepted as Lasianthaea crocea (A.Gray) K.M.Becker (original description)
Zexmenia ghiesbrechtii A.Gray accepted as Lasianthaea macrocephala (Hook. & Arn.) K.M.Becker (original description)
Zexmenia greggii A.Gray accepted as Lasianthaea macrocephala (Hook. & Arn.) K.M.Becker (original description)
Zexmenia helianthoides (DC.) A.Gray accepted as Lasianthaea helianthoides Zucc. ex DC. (original description)
Zexmenia seemannii A.Gray accepted as Lasianthaea seemannii (A.Gray) K.M.Becker (original description)
Zexmenia texana (Torr. & A.Gray) A.Gray accepted as Wedelia hispida Kunth (original description)