Chaenactis carphoclinia A.Gray (original description)
Encelia conspersa A.Gray accepted as Encelia californica Nutt. (original description)
Eupatorium schiedeanum var. grosse-dentatum A.Gray accepted as Fleischmannia sonorae (A.Gray) R.M.King & H.Rob. (original description)
Grindelia inuloides var. microcephala (DC.) A.Gray accepted as Grindelia microcephala DC. (original description)
Helianthus cucumerifolius var. praecox (Engelm. & A.Gray) A.Gray accepted as Helianthus praecox Engelm. & A.Gray (original description)
Heliopsis bupthalmoides A.Gray (original description)
Linosyris mexicana var. tomentosa A.Gray (original description)
Peucephyllum A.Gray (original description)
Peucephyllum schottii A.Gray (original description)
Senecio canus var. pygmaeus A.Gray (original description)
Solidago petiolaris A.Gray (original description)
Tithonia tubaeformis A.Gray (original description)
Trichoptilium A.Gray (original description)
Trichoptilium incisum (A.Gray) A.Gray (original description)