Stenostephanus ruberrimus (D.N. Gibson) T.F. Daniel Stenostephanus ruberrimus (D.N. Gibson) T.F. Daniel in Proc. Calif. Acad. Sci., ser. 4, 61(4): 371. 2010 sec. Ulloa Ulloa & al. 2018≡Habracanthus ruberrimus D.N. Gibson in Fieldiana, Bot. 34(6): 62, f. 3. 1972 syn. sec. POWO 2019