Horridocactus nigricans (A.Dietr. ex K.Schum.) Backeb. & Dölz in Repert. Spec. Nov. Regni Veg. 51: 61. 1942

Horridocactus nigricans (A.Dietr. ex K.Schum.) Backeb. & Dölz in Repert. Spec. Nov. Regni Veg. 51: 61. 1942

Horridocactus nigricans (A.Dietr. ex K.Schum.) Backeb. & Dölz in Repert. Spec. Nov. Regni Veg. 51: 61. 1942

Taxon for this name

Horridocactus nigricans (A.Dietr. ex K.Schum.) Backeb. & Dölz