Cactuspedia home | E-mail | Photo gallery | Dictionary | Search 

This old page has been moved! Click the link next on the right to enter the new Enciclopedia of Cacti. We hope you find this new site informative and useful.

The Encyclopedia of Cacti

  Echinocereus chloranthus
var. cylindricus
(Echinocereus viridiflorus var. cylindricus)
CACTUSPEDIA       

 


The flowers are yellowish-green to dark brick-red , and grow down on the sides forming a band around the middle.
 

Description: Usually grows singly or forms two or more stems , but never forms large clusters or mounds.
Stems: as much as 7,5 cm in diameter and 15 (25) cm tall.
Spines: This species show the extreme variability in spine colour (white, yellow, brown, reddish, black) some plants has only short radials while other have a variable number of centrals.
Flowers: Smaller than others in this genus about 2,5 cm long and 2,5 cm inch broad. They vary from yellowish-green to dark-red or brownish, and grow well down on the sides, often forming a band around the middle. Blooms in March or April.
Fruit: The fruit is small about the size of a small grape, green at first and later turning a purplish red and spiny.

Remarks:
E. chloranthus is part of the E. viridiflorus compless that comprises a large number of infraspecific taxa, differing in various combinations of flower color, spine color, number and thickness of central spines, and other characters, including floral scent. Wherever such taxa are sympatric they intergrade; all are freely interfertile in the greenhouse. Among them:

Recognized subspecies, varieties and forms:
  • E. viridiflorus var. viridiflorus: (Typical form) With small stems and relatively pure yellow flowers, extends from central New Mexico and the Texas Panhandle to South Dakota. (E. viridiflorus var. robustior) is a more robust form but not sufficiently differentiated and considered merely  a local variant of  E. viridiflorus v. viridiflorus.
  • E. viridiflorus var. chloranthus (E. chloranthus) with the most numerous central spines (five or more per areole), giving the plants a bristly appearance, are often considered a separate species.
  • E. viridiflorus var. russanthus (E. russanthus) : Plants with a bristly appearance usually with reddish or russet flowers. Yellow-spined plants may occur at high altitudes.
  • E. viridiflorus var. cylindricus (E. chloranthus var. Cylindricus) : The common morphotype at middle altitudes in Texas and southeastern New Mexico has 0-2(-3) central spines.
  • E. viridiflorus var. correllii  (E. chloranthus var. Cylindricus "corellii") A poorly defined, yellow-spined population near Marathon, Texas.
  • E. viridiflorus var. neocapillus (E. chloranthus var. neocapillus): Remarkable for its softly hairy, not sharply spiny, seedlings.
  • E. chloranthus subsp. rhyolithensis Bristly red-spined plants from New Mexico.
  • NB: Echinocereus viridiflorus in the broad sense may prove paraphyletic with respect to E. davisii, but they are phenologically isolated, with E. davisii flowering earlier and thus appearing reproductively isolated in the wild.

 


 


Cultivation:
In culture E. chloranthus v. cylindricus is without problems and regularly shows its small greenish to brick-red coloured flowers if we provide
an adequate winter rest period. It is sensitive to overwatering (rot prone) needs good drainage, Keep drier and cool in winter. Need full sun; Very cold resistant hardy to -10 C or less for short periods of time.

Propagation:
Seeds or cutting (if available)

Family: Cactaceae (Cactus Family)

Scientific Name: Echinocereus chloranthus v. cylindricus (Engelm.) N.P. Taylor

Origin It is native from a narrow band stretching from the Big Bend of Texas and Mexico to southern New Mexico. El Paso habitat: mainly in the Franklin Mts.

Conservation status: Listed in CITES Appendix II


Common Names include: 
Green-flowered hedgehog, Green-flowered Pitaya

Synonyms:  Taxon synonyms

  • Echinocereus viridiflorus v. cylindricus (Engelm.) Ruempler
  • Echinocereus viridiflorus ssp.cylindricus (Engelmann) N.P.Taylor 1997
  • Echinocereus viridiflorus, Engelmann 1848
 


Echinocereus chloranthus v. cylindricus
SB378 Brewster County, Texas, USA



Photo gallery: Alphabetical listing of Cactus and Succulent pictures published in this site.

Photo gallery Echinocereus

 

Photo of conspecific taxa, varieties, forms and cultivars of plants belonging to the Echinocereus viridiflorus complex.
 E. viridiflorus is a compless that comprises a large number of infraspecific taxa, differing in various combinations of flower color, spine color, number and thickness of central spines, and other characters, including floral scent. Wherever such taxa are sympatric they intergrade; all are freely interfertile in the greenhouse. Among them:

  • E. viridiflorus var. viridiflorus: (Typical form) With small stems and relatively pure yellow flowers, extends from central New Mexico and the Texas Panhandle to South Dakota. (E. viridiflorus var. robustior) is a more robust form but not sufficiently differentiated and considered merely  a local variant of  E. viridiflorus v. viridiflorus.
  • E. viridiflorus var. chloranthus (E. chloranthus) with the most numerous central spines (five or more per areole), giving the plants a bristly appearance, are often considered a separate species.
  • E. viridiflorus var. russanthus (E. russanthus) : Plants with a bristly appearance usually with reddish or russet flowers. Yellow-spined plants may occur at high altitudes.
  • E. viridiflorus var. cylindricus (E. chloranthus var. Cylindricus) : The common morphotype at middle altitudes in Texas and southeastern New Mexico has 0-2(-3) central spines.
  • E. viridiflorus var. correllii  (E. chloranthus var. Cylindricus "corellii") A poorly defined, yellow-spined population near Marathon, Texas.
  • E. viridiflorus var. neocapillus (E. chloranthus var. neocapillus): Remarkable for its softly hairy, not sharply spiny, seedlings.
  • E. chloranthus subsp. rhyolithensis Bristly red-spined plants from New Mexico.

Echinocereus viridiflorus in the broad sense may prove paraphyletic with respect to E. davisii, but they are phenologically isolated, with E. davisii flowering earlier and thus appearing reproductively isolated in the wild.



 

Cactuspedia home | E-mail | Photo gallery | Dictionary | Search 

This old page has been moved! Click the link next on the right to enter the new Enciclopedia of Cacti. We hope you find this new site informative and useful.

The Encyclopedia of Cacti