Echinocactus hemifossus var. gracilispinus Placement status: name of verified uncertain applicationEchinocactus hemifossus var. gracilispinus Wight in Ill. Hort. 5(Misc.): 10. 1858 sec. Britton & Rose 192211. Britton, N. L. & Rose, J.N. 1922: Cactaceae 3Content