Xerophyte

Central Spines

3, light brown to reddish, 12 to 20 mm long, the lowest the longest.

Flowers

37 to 40 mm long, 48 to 57 mm wide, deep yellow, with a slight reddish stripes; Inner perianth segments to 25 mm long. Corolla tube with green scales, axils with wool and 2-3 dark brown bristles (10 mm long). Style yellow, 2 mm in diameter, 22 to 24 mm long. Stigma 4 mm Ø, lobes 11, 3 to 4 mm long, purple. Stamens to 25 mm long, at the level of the stigma, above yellow, orange below, and red- purple at the base. Anther intensely yellow.

Ribs

8 to 9, deeply cut, vertical, up to 6 mm hight, maximum width at the base 12-18 mm.

Stem

48-60 mm wide, 35-50 mm tall, clumping darker green and can get deep purplish to maroon during winter dormancy, though this colour can be retained if grown in sufficient light. However the new growth is green but will soon darken to match the older epidermis.

Radial Spines

c. 9 light brown, reddish-brown, or yellowish.

Areoles

4-5 mm in diameter, illiptical to round, 10 to 16 mm apart.