• Echinocereus procumbens var. longispinus Hirscht

• Echinocereus pentalophus (DC.) H.P.Kelsey & Dayton
• Cereus pentalophus DC.
• Cereus pentalophus var. radicans DC.
• Cereus pentalophus var. simplex DC.
• Cereus pentalophus var. subarticulatus DC.
• Echinocereus leptacanthus (DC. ex Salm-Dyck) K.Schum.
• Cereus leptacanthus. DC. ex Salm-Dyck
• Echinocereus pentalophus var. leptacanthus Lem. ex Rümpler
• Echinocereus pentalophus f. cristatus hort.
• Echinocereus pentalophus f. monstruosus hort.

• Echinocereus pentalophus subs. leonensis (Mathsson) N.P.Taylor
• Cereus leonensis (Mathsson) Orcutt
• Echinocereus leonensis Mathsson
• Echinocereus pentalophus var. leonensis (Mathsson) N.P.Taylor

• Echinocereus pentalophus subs. procumbens (Engelm.) W.Blum & Mich.Lange
• Cereus procumbens Engl.
• Echinocereus pentalophus var. procumbens (Engelm.) P.Fourn. in P.Fourn.
• Echinocereus procumbens (Engelm.) Lem.
• Echinocereus pentalophus var. procumbens f. albiflorus hort.
• Echinocereus procumbens var. longispinus Hirscht

Description: Echinocereus pentalophusSN|1587]]SN|1587]] var. procumbens distinguishes from the standard species for its stems that are semi-prostrate, and the thinnest of all the subspecies. Moreover it stems are deeper green in colour, with 4 to 5 ribs, and 5 to 7 spines per areole. It is a very fine sight in bloom, having few equals within the genus Echinocereus.
habit: It is a matforming cactus with many crowded finger-like stems. Established plants can reach a height of 20 cm and width of 100 cm.
Stems: Semi-prostrate, branched above ground, sprawling and decumbent, reddish-purple to dark green. Stems are weak, 2 cm in diameter.
Ribs: 4-5, with low tubercles.
Central spines: 0 or 1 central spine.
Radial spines: 5 or 7, short, brown, yellowish, tan or ashy white, usually very stiff and straight.
Flowers: Huge, up to 12 cm long lilac, brilliant pink or magenta with a distinct white throat can almost hide the plant, blossoms in mid April-may.
Fruits: Green with white pulp. Fruiting 3-4 months after flowering.