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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.

Espostoa
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
Type species
Espostoa lanata
Species
See text.

These candle-like cacti are covered with spines 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^{[clarification needed]}, but the temperature must not drop below 12 °C.

Taxonomy

Species list

Image	Scientific name	Distribution
	Espostoa blossfeldiorum (Werderm.) Buxb.	Peru
	Espostoa calva F.Ritter	Peru (Amazonas)
	Espostoa cremnophila Hoxey	Peru
	Espostoa frutescens Madsen	Ecuador
	Espostoa hylaea F.Ritter	Peru (Amazonas)
	Espostoa lanata (Kunth) Britton & Rose	Ecuador, Peru
	Espostoa melanostele (Vaupel) Borg	Peru
	Espostoa mirabilis F.Ritter	Peru (Huanuco)
	Espostoa senilis (F.Ritter) N.P.Taylor	Peru (Ancash)
	Espostoa superba F.Ritter	Peru (Ancash)
	Espostoa utcubambensis G.J.Charles	Peru (Amazonas)

Synonyms

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

• Pilocereus dautwitzii
• Binghamia Britton & Rose
• Pseudoespostoa Backeb.
• Thrixanthocereus Backeb.
• Vatricania Backeb.

Bibliography

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

External links

Data related to Espostoa at Wikispecies

• (in English) photos onr www.cactiguide.com
• (in English) Espostoa guentheri

На других языках

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- [en] Espostoa

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[es] Espostoa

Espostoa es un género de cactus columnares, el cual incluye 16 especies cuyo hábitat abarca desde los Andes hasta el sur de Ecuador y Perú.

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[ru] Эспостоя

Эспостоя[2], или Эспостоа[3] (лат. Espostoa) — род древовидных колоннообразных или кустарниковидных суккулентов семейства Кактусовые (Cactaceae), распространённых в среднегорьях Эквадора и Перу. Род включает, по разным классификациям, от 10[4] до 16 видов.

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