basally to form clumps.
Stems: 10-25 cm tall , 3-5 cm in diameter, dull green, often
becoming reddish. Without latex.
Tubercles: Cylindrical four-sided basally, keeled 7-10 mm long ,
5-7 mm in diameter; axils without wool, but sometimes with a few more or
less setose bristles. Tubercule arrangement: 8 - 13
Central spines: 1 to 4 brown needle-like ascending, dark brown or
black, the lowest one elongated (up to 1.5 cm. long), hooked at apex or
Radials: 11 to 18 obscuring the tubercles, 7-14 mm long,
needle-like rather stout, spreading, dull white with dark tips.
Flowers: Wide funnelform purplish pink (White and yellow
varieties are mentioned) inodorous 3 cm in diameter. Outer perianth-segments
greenish or sometimes pinkish; margins somewhat scarious; inner perianth-segments
narrowly oblong, nearly white with a brown stripe down center; style
pink, twice as long as the pink filaments; stigma-lobes 8, linear,
Blooming season (Europe): April, In cultivation the flowers remain open
for several days (at least three).
Fruit: Pale scarlet, clavate, 14 to 18 mm. long;
Seeds: 1 mm. in diameter, constricted below, black with a large
elliptic basal hilum.