Ferocactus recurvus subsp. greenwoodii (Glass) Pilbeam & Bowdery, Ferocactus: 91. 2005
Ferocactus recurvus subsp. greenwoodii, Ferocactus: 91. 2005
is new combination for Ferocactus recurvus var. greenwoodiae in Cact. Succ. J. (Los Angeles) 40: 160. 1968