Wilcoxia tomentosa Bravo in Cact. Suc. Mex. 3(2): 28–29, 32, f. 17–18. 1958
Wilcoxia tomentosa in Cact. Suc. Mex. 3(2): 28–29, 32, f. 17–18. 1958
is basionym for Peniocereus tomentosus in Krainz, Kakteen 55-56: CIIa. 1973
is basionym for Wilcoxia viperina var. tomentosa in Cact. Suc. Mex. 19(2): 47. 1974