Pilosocereus floccosus subsp. quadricostatus (F.Ritter) Zappi in Succ. Pl. Res. 3: 86. 1994
Pilosocereus floccosus subsp. quadricostatus in Succ. Pl. Res. 3: 86. 1994
is new combination for Pilosocereus quadricostatus, Kakteen Südamerika 1: 78. 1979
Pilosocereus floccosus subsp. quadricostatus in Succ. Pl. Res. 3: 86. 1994