Epiphyllum nelsonii Britton & Rose in Contr. U.S. Natl. Herb. 16: 257. 1913
Epiphyllum nelsonii in Contr. U.S. Natl. Herb. 16: 257. 1913
is basionym for Disocactus nelsonii in Beih. Bot. Centralbl. 61(3): 383. 1942
is basionym for Phyllocactus nelsonii in Monatsschr. Kakteenk. 23: 116. 1913
is basionym for Disocactus nelsonii var. nelsonii
is basionym for Chiapasia nelsonii, Cactaceae 4: 203. 1923
Epiphyllum nelsonii in Contr. U.S. Natl. Herb. 16: 257. 1913