Ipomoea clavata (G. Don) Ooststr. ex J.F. Macbr. Ipomoea clavata (G. Don) Ooststr. ex J.F. Macbr. in Field Mus. Nat. Hist., Bot. Ser. 11(1): 3. 1931 sec. Ulloa Ulloa & al. 2018=Ipomoea contrerasii L.O. Williams in Fieldiana, Bot. 32(12): 189. 1970 syn. sec. POWO 2019