Aster wasatchensis var. pulcher (S.F.Blake) S.L.Welsh accepted as Herrickia glauca var. pulchra (S.F.Blake) Brouillet (original description)
Baccharis viminea var. atwoodii S.L.Welsh accepted as Baccharis salicifolia (Ruiz & Pav.) Pers. (original description)
Chrysopsis zionensis (Semple) S.L.Welsh accepted as Heterotheca zionensis Semple (original description)
Cirsium clavatum var. markaguntense S.L.Welsh accepted as Cirsium clavatum var. clavatum (original description)
Cirsium joannae S.L.Welsh, N.D.Atwood & L.C.Higgins (original description)
Cirsium wheeleri var. salinense S.L.Welsh accepted as Cirsium wheeleri (A.Gray) Petr. (original description)
Enceliopsis nudicaulis var. bairdii S.L.Welsh accepted as Enceliopsis nudicaulis (A.Gray) A.Nelson (original description)
Erigeron higginsii S.L.Welsh accepted as Erigeron canaani S.L.Welsh (original description)
Erigeron pumilus var. intermedius (Cronquist) S.L.Welsh (original description)
Erigeron ursinus var. meyerae S.L.Welsh accepted as Erigeron ursinus D.C.Eaton (original description)
Haplopappus acaulis var. atwoodii S.L.Welsh accepted as Stenotus acaulis (Nutt.) Nutt. (original description)
Haplopappus scopulorum var. canonis S.L.Welsh (original description)
Senecio cliffordii N.D.Atwood & S.L.Welsh accepted as Packera spellenbergii (T.M.Barkley) C.Jeffrey (original description)
Senecio streptanthifolius var. platylobus (Rydb.) S.L.Welsh (original description)
Senecio werneriifolius var. barkleyi S.L.Welsh (original description)
Senecio werneriifolius var. malmstenoides S.L.Welsh (original description)
Thelesperma subnudum var. pubescens (Dorn) S.L.Welsh accepted as Thelesperma subnudum A.Gray (original description)
Townsendia beamanii S.L.Welsh (original description)
Townsendia strigosa var. prolixa (M.E.Jones) S.L.Welsh accepted as Townsendia strigosa Nutt. (original description)