Xerophyte

Roots

Taproots expanded, often with necks.

Flowers

Borne on young areoles, funnelform, 2 x 2 cm, scales of pericarpel and tube with dense woolly hairs and sometimes bristles, tube very short. Perianth pale yellow. Style and stigmas yellow.

Spines

Thin, needle-like, yellow-brown to black, becoming grey; centrals 1-2, 1-3 cm long, upcurved; radial s 10-16, 8-15 mm long.

Ribs

About 13, 5- 10 mm high, notched and forming tubercles and often with sunken areoles.

Stem

Grey to dark green about 5,5 cm across.

Fruits

Club-shaped, elongate, hollow 1-2 (or more) cm long, 1-1.5 cm, dark red or reddish brown, dehiscing by basal pores.