Trichocereus thelegonoides (Speg.) Britton & Rose, Cactaceae 2: 131. 1920 Trichocereus thelegonoides (Speg.) Britton & Rose, Cactaceae 2: 131. 1920is new combination for Cereus thelegonoides Speg. in Anales Mus. Nac. Buenos Aires, ser. 3, 4: 480. 1905Taxon for this nameTrichocereus thelegonoides (Speg.) Britton & Rose