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  Echinocereus russanthus
(Echinocereus viridiflorus var. russanthus)
CACTUSPEDIA       

 


Echinocereus russanthus (
L1076 Santa Clara Canyon, Chih. Mx)
The flowers are rust-red  with darker purplish maroon midstripes and greenish-yellow anthers,  Flowering March June.
 

Description: Usually single stemmed cacti that may branch and form clusters, some having as many as a dozen.
Stem:
Erect, spheric to short cylindric, 8-30 tall and 4-8 cm in diameter; ribs 10-20, crests prominent, slightly to conspicuously undulate; areoles 3-12 mm apart.
Spines: Interlocking, bristle-like slender,  typically reddish to brown (but also white or yellowish) obscuring the stems, radiating in all directions.
Flowers: 2-3.5 1.5-3 cm; rust-red, often with darker purplish maroon midstripes, anthers greenish-yellow Flowering: March - June.
Fruits: yellowish green to dark green, dark purple, or reddish tinged, 6-17 mm, pulp white; fruiting 2 months after flowering.
 


The flowers are tiny rusty-red
and have a very spiny calyx.


Echinocereus russanthus
SB420 Brewster County, Texas, USA


Cultivation:
In culture E. russanthus is without problems and regularly shows its small  purplish 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 -20 C or less for short periods of time.

Propagation:
Seeds or cutting (if available)
 

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

Photo gallery Echinocereus

Family: Cactaceae (Cactus Family)

Scientific Name: Echinocereus russanthus Weniger

Origin Native to Chihuahua, Mexico, North to Western Texas.

Conservation status: Listed in CITES Appendix II

Synonyms:

  • Echinocereus viridiflorus var. russanthus
  • Echinocereus chloranthus var. russanthus (Weniger) Lamb. ex Rowley
  • Echinocereus russanthus ssp. fiehnii
  • Echinocereus russanthus var. fiehni
  • Echinocereus russanthus ssp. weedinii,
 


E. russanthus  L1076
This species is heavily covered with a mass
of interlocking bristlelike slender spines
radiating in all directions.

 

Photo of conspecific taxa, varieties, forms and cultivars of plants belonging to the Echinocereus viridiflorus complex.
 E. russanthus 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:

  • 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.



 

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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