Eriocephala schumanniana subsp. claviceps (F.Ritter) Guiggi in Cactology 3 (Suppl. III): 1. 2012
Eriocephala schumanniana subsp. claviceps in Cactology 3 (Suppl. III): 1. 2012
is new combination for Eriocactus claviceps in Succulenta (Netherlands) 45: 115. 1966