• Cleistocactus parvisetus (Otto) F.A.C.Weber in Rol.-Goss.
• Cereus parvisetus Otto in Pfeiff.

Description: Originally described from a Brazilian specimen grown at Berlin, as follows: Simple, slender, 15 mm. in diameter, erect, with 12 angles; ribs somewhat compressed; areoles close together, white; upper spines 4 or 5, brown; lower spines 6 to 8, white, hair-like. According to Schumann this species is found in the Serra da Lapa, Minas Geraes, Brazil. We do not know its relationship, although Weber thought it was a Cleistocactus. It was introduced only once, probably by Riedel, and is not now in cultivation. This comes from the same region as the species of Leocereus and should be compared with plants of that genus.

Bibliography: "THE CACTACEAE" [Britton & Rose] vol. 2, pag 175. 1920