Sidotheca emarginata (H.M.Hall) Reveal in Harvard Pap. Bot. 9(1): 211. 2004 sec. Reveal 2005
- ≡Oxytheca emarginata H.M.Hall in Univ. Calif. Publ. Bot. 1(1): 75–76, pl. 14. 1902 syn. sec. WFO 2018
- ≡Eriogonum emarginatum (H.M.Hall) S.Stokes, Eriogonum: 27. 1936 syn. sec. Reveal 2005