Peniocereus greggii (Engelm.) Britton & Rose in Contr. U.S. Natl. Herb. 12: 428, pl. 74, 75. 1909
Peniocereus greggii in Contr. U.S. Natl. Herb. 12: 428, pl. 74, 75. 1909
is new combination for Cereus greggii, Mem. Tour N. Mexico: 102. 1848
Peniocereus greggii in Contr. U.S. Natl. Herb. 12: 428, pl. 74, 75. 1909