Acamptopappus shockleyi A.Gray (original description)
Actinella vaseyi A.Gray accepted as Hymenoxys vaseyi (A.Gray) Cockerell (original description)
Ambrosia canescens A.Gray (original description)
Ambrosia pumila (Nutt.) A.Gray (original description)
Antennaria flagellaris (A.Gray) A.Gray (original description)
Antennaria stenophylla (A.Gray) A.Gray (original description)
Artemisia parishii A.Gray accepted as Artemisia tridentata subsp. parishii (A.Gray) H.M.Hall & Clem. (original description)
Aster palmeri A.Gray accepted as Neonesomia palmeri (A.Gray) Urbatsch & R.P.Roberts (original description)
Aster stenomeres A.Gray accepted as Ionactis stenomeres (A.Gray) Greene (original description)
Baccharis sarothroides A.Gray (original description)
Barroetea pavonii A.Gray (original description)
Bigelowia bigelovii (A.Gray) A.Gray accepted as Ericameria nauseosa var. bigelovii (A.Gray) G.L.Nesom & G.I.Baird (original description)
Bigelowia intricata A.Gray (original description)
Brickellia cylindracea var. laxa A.Gray accepted as Brickellia cylindracea (original description)
Brickellia frutescens A.Gray (original description)
Brickellia grandiflora var. petiolaris A.Gray accepted as Brickellia grandiflora (Hook.) Nutt. (original description)
Brickellia lemmonii A.Gray (original description)
Brickellia odontophylla A.Gray (original description)
Brickellia pringlei A.Gray (original description)
Cnicus rothrockii A.Gray accepted as Cirsium arizonicum var. rothrockii (A.Gray) D.J.Keil (original description)
Crepis pleurocarpa A.Gray (original description)
Dugesia A.Gray (original description)
Dugesia mexicana (A.Gray) A.Gray (original description)
Erigeron dryophyllus A.Gray (original description)
Erigeron muirii A.Gray (original description)
Erigeron pringlei A.Gray (original description)
Eupatorium coahuilense A.Gray accepted as Phanerostylis coahuilensis (A.Gray) R.M.King & H.Rob. (original description)
Eupatorium cuspidatum Pav. ex A.Gray accepted as Barroetea pavonii A.Gray (original description)
Eupatorium fendleri (A.Gray) A.Gray accepted as Brickelliastrum fendleri (A.Gray) R.M.King & H.Rob. (original description)
Eupatorium pauperculum A.Gray accepted as Ageratina paupercula (A.Gray) R.M.King & H.Rob. (original description)
Eupatorium setiferum Pav. ex A.Gray accepted as Barroetea pavonii A.Gray (original description)
Gnaphalium wrightii A.Gray accepted as Pseudognaphalium canescens subsp. canescens (DC.) W.A.Weber (original description)
Grindelia arizonica A.Gray (original description)
Grindelia costata A.Gray accepted as Grindelia grandiflora Hook. (original description)
Gymnolomia triloba A.Gray accepted as Zaluzania grayana B.L.Rob. & Greenm. (original description)
Hecastocleis A.Gray (original description)
Hecastocleis shockleyi A.Gray (original description)
Kuhnia schaffneri A.Gray accepted as Brickellia schaffneri (A.Gray) Shinn. (original description)
Lagophylla glandulosa A.Gray (original description)
Leptosyne arizonica A.Gray accepted as Coreocarpus arizonicus (A.Gray) S.F.Blake (original description)
Lessingia glandulifera A.Gray (original description)
Madia yosemitana Parry ex A.Gray accepted as Jensia yosemitana (Parry ex A.Gray) B.G.Baldwin (original description)
Micropus amphibolus A.Gray (original description)
Parthenium confertum A.Gray (original description)
Parthenium hysterophorus var. lyratum A.Gray accepted as Parthenium confertum var. lyratum (A.Gray) Rollins (original description)
Pluchea borealis A.Gray (original description)
Plummera A.Gray accepted as Hymenoxys Cass. (original description)
Plummera floribunda A.Gray accepted as Hymenoxys ambigens var. floribunda (A.Gray) W.L.Wagner (original description)
Rudbeckia mohrii A.Gray (original description)
Rudbeckia montana A.Gray (original description)
Senecio lemmonii A.Gray (original description)
Solidago bicolor var. lanata (Hook.) A.Gray accepted as Solidago hispida Muhl. ex Willd. (original description)
Solidago bigelovii var. wrightii (A.Gray) A.Gray accepted as Solidago wrightii A.Gray (original description)
Solidago boottii var. brachyphylla (Chapm. ex Torr. & A.Gray) A.Gray accepted as Solidago brachyphylla Chapm. ex Torr. & A.Gray (original description)
Solidago boottii var. ludoviciana A.Gray accepted as Solidago ludoviciana (A.Gray) Small (original description)
Solidago caesia var. axillaris (Pursh) A.Gray accepted as Solidago caesia var. caesia L. (original description)
Solidago caesia var. paniculata A.Gray accepted as Solidago caesia var. caesia L. (original description)
Solidago confinis A.Gray (original description)
Solidago curtisii var. pubens (M.A.Curtis ex Torr. & A.Gray) A.Gray accepted as Solidago bicolor L. (original description)
Solidago humilis var. gillmanii A.Gray accepted as Solidago simplex var. gillmanii (A.Gray) G.S.Ringius (original description)
Solidago missouriensis var. extraria A.Gray (original description)
Solidago missouriensis var. montana A.Gray accepted as Solidago missouriensis Nutt. (original description)
Solidago multiradiata var. neomexicana A.Gray accepted as Solidago glutinosa Nutt. accepted as Solidago simplex var. simplex (original description)
Solidago sect. Paniculatae A.Gray (original description)
Solidago sect. Thyrsiflorae A.Gray accepted as Solidago subsect. Thyrsiflorae (A.Gray) A.Gray (original description)
Solidago sempervirens var. viminea (Aiton) A.Gray (original description)
Solidago serotina var. gigantea (Aiton) A.Gray accepted as Solidago gigantea Aiton (original description)
Solidago spectabilis (D.C.Eaton) A.Gray (original description)
Stevia plummerae A.Gray (original description)
Synedrella vialis (Less.) A.Gray accepted as Calyptocarpus vialis Less. (original description)
Vernonia ervendbergii A.Gray accepted as Vernonia greggii subsp. ervendbergii (A.Gray) G.C.Chapman & S.B.Jones (original description)
Vernonia greggii A.Gray (original description)
Vernonia schaffneri A.Gray accepted as Vernonia greggii subsp. schaffneri (A.Gray) G.C.Chapman & S.B.Jones (original description)
Viguiera lanata (Kellogg) A.Gray (original description)
Viguiera tephrodes (A.Gray) A.Gray accepted as Helianthus niveus subsp. tephrodes (A.Gray) Heiser (original description)