Feather cactus

Feather cactus grows in cracks of the limestone or gravely sand in arid areas.

The stem is green, spherical and has tubercles (lumps).   It grows four to seven centimeters in diameter and grows in cluster to form a mound which becomes up to about 40cm in width.

There is no central spine but there are about 40 radial spines which are white, feather-like, soft and protect the stem from the strong sunshine in a desert.   These spines are one to seven millimeters in length and has long hairs which are arranged like a comb and looks like a bird's feather.

The flower is about 15mm in diameter and white to light yellow with a pink stripe running down the middle of the petal.   It releases a strong, sweet scent.

This species is listed in Convention on International Trade in Endangered Species of Wild Fauna and Flora (CITES) appendix 2.

Classification: Cactaceae Mammillaria
Scientific name: Mammillaria plumosa F.A.C. Weber
Japanese name: Shiraboshi
English Name: Feather cactus
Native locality: Altitude of 780m to 1350m in Coahuila and Nuevo Leon, Northeastern Mexico
Ecological description: Evergreen perennial cactus
RDB : ---
Planting place: South and Central America Greenhouse
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