Xerophyte

Description

Mammillaria lasiacanthaSN|9075]]SN|9075]] a tiny usually unbranched or slowly clustering cactus, deep-seated in substrate and inconspicuous. Adults of M. lasiacantha usually have glabrous spines, but in some populations all plants may retain plumose spines at maturity.

Roots

Diffuse not enlarged.

Flowers

1-2,5 cm; white or cream, usually with sharply defined midstripes of green, yellow, tan, pink, pale purple, or reddish, blooming from January to March.

Spines

40-80 per areole, in several series but all equally thin, mostly appressed, white or very pale pink, often minutely tipped pinkish brown, innocuous, bristlelike, 0,5-6 mm, glabrous to plumose, all interpreted as radial, innermost spines shortest; No central spines.

Stem

Depressed-spheric to short cylindric, 1-3.5cm wide × 1,5-7 cm tall. axils bare.

Fruits

Scarlet, cylindric or clavate, 10-25 mm long with floral remnant persistent ripening in June August.