- [ Echinocereus rigidissimus variety rubispinus (G.Frank & A.B.Lau) N.P.Taylor]

- [ Echinocereus rigidissimus variety rubispinus (G.Frank & A.B.Lau) N.P.Taylor]

TEST 5 444739 - / W. Curtis, Bot. Mag., ser. 2, vol. 1(): : t. 24, fig. 2 (1984) [C. King] — - [Cactaceae]
W. Curtis, Bot. Mag., ser. 2, vol. 1(): : t. 24, fig. 2 (1984) [C. King]