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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 gounellei

Pilosocereus gounellei


     12 images

Taxa Included:
   P. gounellei -
11 images

   P. gounellei zehntneri -
1 image


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Pilosocereus jauruensis

Pilosocereus jauruensis


     No images

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Pilosocereus lanuginosus

Pilosocereus lanuginosus


     7 images

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Pilosocereus leucocephalus

Pilosocereus leucocephalus


     12 images

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Pilosocereus machrisii

Pilosocereus machrisii


     7 images

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Pilosocereus magnificus

Pilosocereus magnificus


     5 images

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Pilosocereus multicostatus

Pilosocereus multicostatus


     No images

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Pilosocereus occultiflorus

Pilosocereus occultiflorus


     No images

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Pilosocereus oligolepis

Pilosocereus oligolepis


     No images

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Pilosocereus pachycladus

Pilosocereus pachycladus


     15 images

Taxa Included:
   P. pachycladus -
9 images

   P. pachycladus pernambucoensis -
6 images


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