Xerophyte

Note

Rumpler writes (1885)

Spines

Variable, all radial or sometime with one central.

Ribs

10-20 (or more), acute, separated by deep vertical grooves, crenate ( notched),obliquely interrupted at the areola.

Stem

Single or forming shoots, ellipsoidal, 5-6(-10) cm thick dark greyish-green, dark blue-green or tan.

Radial Spines

6, stronger and 4-5 thinner, acicular, slightly bent inward, about 26 mm long, at first dark purple and subsequently brownish or grey.