Subordo
Cactineae
Bessey in C.K. Adams
pub. Johnson's Universal Cyclop. 8: 462. 15 Nov 1895.
Familia
Cactaceae
Juss.
pub. Gen. Pl.: 310. 4 Aug 1789. common name:
Cactus
Genus
Efossus
Orcutt
syn. Stenocactus (K.Schum.) A.W.Hill
Individual specimen entries are published in the sample database supplied with
The Compleat Botanica for species or varieties of this supra-generic taxon.