Cranichis gracilis L.O. Williams Cranichis gracilis L.O. Williams in Ceiba 1(3): 185. 1950 sec. Soto-Arenas & al. 2007=Nezahualcoyotlia gracilis (L.O. Williams) R. González in Bol. Inst. Bot. (Univ. Guadalajara) 4(1-3): 69, f. 1. 1996 syn. sec. Soto-Arenas & al. 2007