Mammillaria plumosa
Dict. Hort. [Bois] 2: 804. 1898
Family
Cactaceae
Genus
Species
Mammillaria plumosa
Author
F.A.C.Weber in Bois
Chinese genus
乳突球属
Chinese name
白星
Primary
DescriptionEdit description
Central Spines
Absent.
Seeds
Black.
Description
Mammillaria plumosaSN|9350]]SN|9350]] is a clumping plants that forms low, dense mounds sometime up to 40 cm wide entirely covered by the mass of white feathery spines.
Tubercles
Small, flattened, 2-4 mm long, somewhat woolly in their axil.
Flowers
Whitish yellow, up to 3-15 mm long (occasionally with pink midstrips), with a strong sweet scent. Perianth segment with a reddish line running down to the centre.
Stem
Depressed globose or somewhat elongate, without latex, spherical, 4- 7 cm high and in diameter. Light green, but appearing white because of the dense spines.
Radial Spines
About 40 per areole 1 - 7 mm long, white, weak, interlacing, feathery. The spines in this specie have very long hairs along the spine-axis arranged as are the segments of a bird's feather and that furnish an epidermal protection against the blasting sun of the desert.