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Notes for the Genus:

Pilosocereus

Etymology From the Greek - pilosus -meaning hairy cerues.
The genus Pilosocereus was known as Pilocereus up until 1954 when it was renamed due to a discrepancy found according to the rules of botanical nomenclature. This earlier name meant felted-cereus. Both names refer to the very hairy areoles on the stems - at least the mature flowering portions of the stems. Many of the species in the genus feature spectacular blue-colored stems, but may be green. Plants are either shrubby or large, tree-like. Flowers are tube-like and the floral tubes and unopened buds are often very blue in color. The perianth parts of the flower are often white or pinkish-white with many stamens and a protruding style. Floral tubes have scales and are smooth and spineless. Pollination is done by bats. Fruits are fleshy and contain seed and pulp.

In the wild, this genus is widespread from Mexico and in the Caribbean Islands, down throughout South America. A few species are known in cultivation, while others species by contrast can scarcely be found using an internet image search. Of the species in cultivation, P. pachycladus is produced on a massive scale by large wholesale nurseries. Presumably for the attractive blue skin. As a result, it is one of the most common cactus species in cultivation, next to the "Golden Barrel" - Echinocactus grusonii. It is often sold under the more pleasant sounding synonym P. azureus.

Click on one of the species below for more info.

Pilosocereus chrysostele

Pilosocereus chrysostele


     2 images

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Pilosocereus collinsii

Pilosocereus collinsii


     No images

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Pilosocereus densiareolatus

Pilosocereus densiareolatus


     2 images

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Pilosocereus diersianus

Pilosocereus diersianus


     No images

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Pilosocereus estevesii

Pilosocereus estevesii


     No images

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Pilosocereus flavipulvinatus

Pilosocereus flavipulvinatus


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Pilosocereus flexibilispinus

Pilosocereus flexibilispinus


     No images

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Pilosocereus floccosus

Pilosocereus floccosus


     3 images

Taxa Included:
   P. floccosus -
No images

   P. floccosus quadricostatus -
3 images


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Pilosocereus fulvilanatus

Pilosocereus fulvilanatus


     5 images

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Pilosocereus glaucochrous

Pilosocereus glaucochrous


     3 images

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*Currently 37 of 37 known species in this genus are represented on CactiGuide.com.
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