Xerophyte

Habit

It is a solitary cactus that may occasionally form few branched clumps.

Central Spines

4-8,20-30 mm long.

Roots

Fibrous from a short tap root.

Flowers

Flowers are about 3-5,5 cm long and broad, broadly funnel-form, yellowish-green, dull-yellow or yellow with reddish-brown midveins or reddish.

Spines

Long, stiff, greyish-brown spines with a darker tip, thin to thick, awl shaped. Young spines are almost black, while older ones turn greyish.

Ribs

14-24, noticeably notched with chinlike protrusions.

Stem

Subglobose or globose, sometime elongate (especially in cultivation), 8-20 cm across, very dark greyish-green to purple-black, often with naked or with few spines at the top.

Radial Spines

10-15,10-30 mm.

Fruits

Somewhat elongate, reddish, fleshy, about 1 cm long splitting open by at the base.