Sisyrinchium serrulatum (E.P. Bicknell) Espejo & López-Ferr. Sisyrinchium serrulatum (E.P. Bicknell) Espejo & López-Ferr. in Acta Bot. Mex. 41: 4. 1997 sec. Espejo Serna & al. 2010≡Hydastylus serrulatus E.P. Bicknell in Bull. Torrey Bot. Club 27: 385-386. 1900 syn. sec. Espejo Serna & al. 2010