Columnar Cacti - Espotoa

Espostoa

Espostoa Britton & Rose 1920: An interesting genus of columnar cacti from Equador, Peru and Bolivia. The genera Thrixanthocereus and Vatricana are generally referred here now as they are very closely related. Quite easy to grow although perhaps the species formerly included in Vatricana and Thrixanthocereus need slightly warmer conditions in winter.

Contents:

First publication of the genus Espostoa (From Britton & Rose)
Bob Ressler's photographs
The genus Espostoa Br.& R by Graham Charles
reproduced from the British Cactus & Succulent Journal 17, 2, 68 - 79 (1999) with kind permission from Graham Charles.
An interesting hybrid Espostoa
Espostoa sp. de Amazonas
Espostoa guentheri (First flowering)

References:

The Cactaceae, Volume 2, Britton & Rose, 1920
Die Cactaceae, Band IV, Curt Backeberg, 1966, 2,515-2,543
The Cactus Family, Edward F.Anderson, 2001, pp 315-322
Beitrag zur Kenntnis der peruanischen Kakteenvegation, Wener Rauh, 1958, pp 516-529
Kakteen in Südamerika, Friedrich Ritter, Band 4, 1981, pp 1,429-1,451