First description by Rischer & Krüger - MafM 27(2): 50 - 58 2003

Body: Plants solitary, rarely clustering from base, flattened globose, oblong, to 10 - 15 mm long and to 35 mm wide.
Roots: Taproot, 15 - 50 mm long and 35 mm in diameter.
Sap: Without latex
Tubercule: Conical, dark green, widely separated, rounded at the top, somewhat soft, 5 mm wide, 7 - 9 mm long.
Axil: With some short bristles
Radial spine: 19 - 25, mostly 24, glassy white, interlacing, smooth, 3 - 4 mm long.
Central spine: Absent.
Flower: Funnelform, violet-pink, 35 - 50 mm long, 30 - 40 mm wide, stigmas yellow.
Fruit: Ripens in the body, brownish, 4 - 5 mm wide and long.
Seed: Black, 1,2 mm long and 1 mm wide.
Habitat Substrate: Volcanic rocks with sandy humus soil.
Geographic Distribution: Durango, Mexico - near Canatlan.
Bibliography: MafM 27(2): 50 - 58 (2003)