Xerophyte

Habit

It is a small low growing crested cactus that will slowly forms tangled groups up to 20 cm in diameter.

Description

The Mammillaria sp. SB500 Cuatrocienagas, Coahuila, MexicoSN|9075]]SN|13771]] is a tiny form of Mammillaria lasiacanthaSN|13771]]SN|9075]] that may retain plumose spines at maturity. The crested form - despite to its beauty - is still very rare and sought after by collectors, for its unique features.

Roots

Diffuse not enlarged.

Flowers

1-2,5 cm tall an in diameter, 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, plumose, all interpreted as radial, innermost spines shortest. No central spines.

Stem

Fan-shaped about 3,5 thick,. Axils bare.

Fruits

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