Espostoa

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Espostoa
Espostoa lanata, Huntington.jpg
Espostoa lanata
Scientific classification
Kingdom: Plantae
(unranked): Angiosperms
(unranked): Eudicots
(unranked): Core eudicots
Order: Caryophyllales
Family: Cactaceae
Subfamily: Cactoideae
Tribe: Trichocereeae
Genus: Espostoa
Britton & Rose
Species

See text.

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. Only the older specimens can divide.

In adulthood, a cephalium sometimes appears, similar to the Mexican genus Cephalocereus.

They were discovered by Alexander von Humboldt and Aimé Bonpland in the early nineteenth century.

They are appreciated for their decorative qualities due to their white fleece. They can be propagated by seed. For full development they must be planted in the ground. The cultivated specimens very rarely flourish.

Like all cacti, Espostoa requires a sunny location and well-drained soil. But in summer, it appreciates fertilizer and wetter conditions. In winter, it needs a rest, but the temperature must not drop below 12 °C.

Taxonomy[edit]

Species list[edit]

Sometimes called "old Peruvian man", it is the most common species. Arborescent type tree up to 5 m high in the wild and 1 m in culture. Trunk diameter 5 to 12 cm in diameter, with 20 to 25 ribs flattened obscured by tissue woolly. The white cover is due to long fuses back. The central sharp goads sometimes cross the wool up to 2 inches long. Older plants have a cephalium on the side from which appear white flowers at night.

Cactaceae Espostoa lanata (HBK) Britt & Rose, photo is taken at Bedugul Botanical Garden, Bali, Indonesia, cactus with white hairy, so sometimes it calls 'Old Peruvian Man'

Synonymy[edit]

The following genera or species have been included in this genus:

Bibliography[edit]

  • Innes C, Wall B (1995). Cacti' Succulents and Bromaliads. Cassell & The Royal Horticultural Society.
  • Edward F. Anderson : "The Cactus Family" (2001)

External links[edit]