Plants unbranched (rarely few branched). Stems erect, short cylindric, to 20 × 4-6 cm; ribs 13-19, crests slightly undulate; areoles 4-8 mm apart. Spines 13-17 per areole, stiff and straight, white, pink, or gray, becoming gray with dark tips; radial spines 12-17 per areole, appressed to spreading, 2-12 mm; central spines (0-)1-4 per areole, projecting, 1-4 mm. Flowers 5-8 × 7-10 cm; flower tube 15-25 × 8-20 mm; flower tube hairs 3-5 mm; inner tepals purplish pink, darker proximal portion and midstripes, 35-45 × 10-22 mm, tips relatively thin and delicate; anthers dark yellow; nectar chamber to 3 mm. Fruits dark green, brownish tinged, 15-23 mm, pulp white.
Home