Xerophyte

Description

Unbranched (rarely few branched).

Flowers

5-8 × 7-10 cm; inner tepals purplish pink, darker proximal portion and midstripes, tips relatively thin and delicate; anthers dark yellow. Filaments and throat greenish.

Spines

13-17 per areole, stiff and straight, white, pink, brown 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.

Ribs

13-19, crests slightly undulate, sometimes tuberculate;

Stem

Erect, short cylindric, to 20(-40) × 4-6 cm;

Fruits

Dark green, brownish tinged, 15-23 mm, pulp white, fruiting 2 months after flowering.

Areoles

Round , closely set 4-8 mm apart.

Blooming Times

Spring to summer