Antennaria luzuloides var. microcephala (A.Gray) Cronquist accepted as Antennaria luzuloides subsp. aberrans (E.E.Nelson) R.J.Bayer & Stebbins (original description)
Aster spathulatus var. intermedius (A.Gray) Cronquist (original description)
Aster welshii Cronquist accepted as Symphyotrichum welshii (Cronquist) G.L.Nesom (original description)
Bahia nudicaulis var. desertorum (M.E.Jones) Cronquist accepted as Platyschkuhria integrifolia (A.Gray) Rydb. (original description)
Bahia nudicaulis var. oblongifolia (A.Gray) Cronquist accepted as Platyschkuhria integrifolia (A.Gray) Rydb. (original description)
Bahia nudicaulis var. ourolepis (S.F.Blake) Cronquist accepted as Platyschkuhria integrifolia (A.Gray) Rydb. (original description)
Balsamorhiza hookeri var. platylepis (W.M.Sharp) Cronquist accepted as Balsamorhiza hookeri (Hook.) Nutt. (original description)
Brickellia longifolia var. multiflora (Kellogg) Cronquist accepted as Brickellia multiflora Kellogg (original description)
Chrysothamnus parryi var. affinis (A.Nelson) Cronquist accepted as Ericameria parryi var. affinis (A.Nelson) G.L.Nesom & G.I.Baird (original description)
Cirsium murdockii (S.L.Welsh) Cronquist accepted as Cirsium eatonii var. murdockii S.L.Welsh (original description)
Cirsium murdockii S.L.Welsh (original description)
Crepis nana var. ramosa (Babc.) Cronquist accepted as Askellia pygmaea (Ledeb.) Sennikov (original description)
Crepis runcinata subsp. runcinata var. andersonii (A.Gray) Cronquist accepted as Crepis runcinata subsp. andersonii (A.Gray) Babc. & Stebbins (original description)
Crepis runcinata var. andersonii (A.Gray) Cronquist accepted as Crepis runcinata subsp. andersonii (A.Gray) Babc. & Stebbins (original description)
Dicoria canescens subsp. brandegeei (A.Gray) Cronquist accepted as Dicoria canescens A.Gray (original description)
Dicoria canescens var. brandegeei (A.Gray) Cronquist accepted as Dicoria canescens A.Gray (original description)
Dicoria canescens var. hispidula (Rydb.) Cronquist accepted as Dicoria canescens A.Gray (original description)
Dicoria canescens var. wetherillii (Eastw.) Cronquist accepted as Dicoria canescens A.Gray (original description)
Haplopappus bloomeri var. greenei (A.Gray) Cronquist accepted as Ericameria greenei (A.Gray) G.L.Nesom (original description)
Haplopappus leverichii Cronquist accepted as Isocoma humilis G.L.Nesom (original description)
Haplopappus rusbyi (Greene) Cronquist accepted as Isocoma rusbyi Greene (original description)
Haplopappus spinulosus var. paradoxus (B.L.Turner & R.L.Hartm.) Cronquist (original description)
Hymenoclea sandersonii (S.L.Welsh) N.H.Holmgren (original description)
Hymenoclea sandersonii S.L.Welsh (original description)
Hymenoxys acaulis var. epunctata (A.Nelson) Cronquist accepted as Tetraneuris acaulis var. epunctata (A.Nelson) Kartesz & Gandhi (original description)
Hymenoxys argentea var. ivesiana (Greene) Cronquist accepted as Tetraneuris ivesiana Greene (original description)
Kuhnia eupatorioides var. chlorolepis (Wooton & Standl.) Cronquist accepted as Brickellia chlorolepis (Wooton & Standl.) Shinners (original description)
Leucosyris carnosa var. intricata (A.Gray) Cronquist accepted as Leucosyris carnosa (A.Gray) Greene (original description)
Machaeranthera confertifolia (Cronquist) Cronquist accepted as Xylorhiza confertifolia (Cronquist) T.J.Watson (original description)
Machaeranthera cronquistii (S.L.Welsh & N.D.Atwood) Cronquist accepted as Xylorhiza cronquistii S.L.Welsh & N.D.Atwood (original description)
Machaeranthera linearifolia (T.J.Watson) Cronquist accepted as Xylorhiza glabriuscula Nutt. (original description)
Malacothrix clevelandii var. stebbinsii (W.S.Davis & P.H.Raven) Cronquist accepted as Malacothrix stebbinsii W.S.Davis & P.H.Raven (original description)
Senecio fremontii var. inexpectatus Cronquist (original description)
Solidago canadensis var. lepida (DC.) Cronquist (original description)
Solidago simplex var. spathulata (DC.) Cronquist accepted as Solidago spathulata DC. (original description)
Solidago spectabilis var. confinis (A.Gray) Cronquist accepted as Solidago confinis A.Gray (original description)
Thelesperma subnudum var. marginatum (Rydb.) Melchert ex Cronquist accepted as Thelesperma subnudum A.Gray (original description)