Aster argillicola Peck (original description)
Aster argillicola M.Peck (original description)
Erigeron uncialis S.F.Blake (original description)
Erigeron uncialis var. conjugans S.F.Blake (original description)
Hieracium siskiyouense M.Peck accepted as Hieracium bolanderi A.Gray (original description)
Hieracium siskiyouense Peck (original description)
Scorzonella leachiana Peck (original description)
Scorzonella leachiana M.Peck accepted as Microseris laciniata subsp. leptosepala (Nutt.) K.L.Chambers (original description)