
Espostoa is a genus of columnar cacti, comprising 16 species known from the Andes of southern Ecuador and Peru. It usually lives at an altitude of between 800m and 2500m. Its fruit is edible, sweet, and juicy. The genus is named after Nicolas E. Esposto, a renowned botanist from Lima. These candle-like cacti are covered with thorns and white hair....
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http://en.wikipedia.org/wiki/Espostoa

(Cotton Ball, Peruvian Old Man, Peruvian Snow Ball, Snowball Cactus) This group consists of sixteen, columnar cacti from the Andes of southern Ecuador and Peru. In their native habitat, they grow in very rocky soil on the sides of steep valleys, but in cultivation, they grow well in any well-drained soil. Most species are clothed in woolly spines t...
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http://www.encyclo.co.uk/local/10004
No exact match found.