Xerophyte

Habit

It is solitary to densely caespitose. The size and shape of the stems is somewhat variable from small evenly flattened rounded tops merging together very low to the ground, to form even mounds with larger headed, separately standing stems.

Central Spines

Usually absent, occasionally 1, stiff, glassy white to yellowish, yellow at the base.

Seeds

Black.

Description

Mammillaria schiedeanaSN|2251]]SN|2251]] ssp dumetorum is a small clustering cactus, with short, closely interwoven, white plumose spines. It has less than 50 radial spines per areole and are stiffer than the fine spines of 'ssp. Schiedeana'. The flowers are near white.

Roots

It has thick root.

Tubercles

Cylindrical, terete, tapered towards the tips, green, close together and without latex. Axil hairy, but no woolly.

Flowers

Whitish, about 1 cm long and in diameter.

Stem

Flattened globose, dark green, 55 mm high, 35-75 mm in diameter, somewhat soft in texture.

Radial Spines

Always less than 50, mostly about 30, close to the stem, in 2 or 3 whorls, fine, needle-like to bristle-like. The 12 or14 outer marginal spines of the areoles are thin, somewhat thicker, awl-shaped, stiff, glassy white to yellowish, yellow at the base, the inner almost hair-like and thinner.

Fruits

Red.

Areoles

Round slightly woolly.