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  Echinocereus longisetus CACTUSPEDIA       

 


E. Longisetus SB1707 Encantata, Coahuila, Mexico.

They must be grown in very sunny position to stay compact and produce the characteristic long spines.
 

Description: Echinocereus longisetus is a robust and very attractive plant with bristle like
white spines, which stay simple or (usually) branches from the base and forms a nice group of several stems up to 1 m wide.
Root:
Fibrous.
Stems: Cylindric, more or less erect,15-50 cm long and 5-8 cm in diameter almost completely covered with white bristle like spines.
Ribs: 11 to 14, low, somewhat tuberculate.
Areoles: Circular, yellowish.
Central spines: 5 to 9, slender, elongated, bristly to hairlike, white to brownish, straight to curved, directed downward and very unequal 1-10 cm long,
Radial spines: 18 to 20, 1.5 cm long, white, spreading, the lower 10 to 20 mm long, much longer than the upper.
Flowers: Funnel form, rather small up to 7 cm long and in diameter (but usually less than 5 cm wide) pinkish-purple or purple, not borne near the stem tips, often nearly basal.
Remarks: Echinocereus longisetus
are superficially somewhat similar to the E. viridiflorus complex, but they are much larger and have magenta flowers.

Recognized subspecies, varieties and forms:

  • E. longisetus ssp. longisetus It has stems barely reaching 8 cm in diameter with17 or fewer ribs and straight central spines. Origin: Northern central Coahuila and western central Nuevo Leon.
  • E. longisetus ssp. longisetus It has stems up to 8 cm in diameter, 17-24 ribs and hairlike curled central spines. Origin: Southern Coahuila above 1800 m.
  • Echinocereus longisetus var. rayonensis has thinner stems about 2.5 to 3.5
    in diameter and spines are longer and overall appearance is whiter.



 

Family: Cactaceae (Cactus Family)

Scientific name:  Echinocereus longisetus (Engelm. 1856) Rümpler
In Föster Handbuch der Cacteenkunde 822. ed. 2. 1885

Origin:  Mexico (Coahuila, Nuevo Leon)

Conservation status: Listed in CITES appendix 2.

Synonyms:

  • Cereus longisetus Engelm.
    In Proceedings of the American Academy of Arts and Sciences 3: 280-281. 1856
  • Echinocereus longisetus (Engelm. 1856) Lem.
    In Memoir of a Tour to Northern Mexico 91. 1868
  • Cephalocereus delaetii Gürke 1909
  • Echinocereus delaetii (Gürke) Gürke 1909
  • Echinocereus longisetus var. delaetii (Gürke) N.P.Taylor 1988
  • Echinocereus longisetus ssp. delaetii (Gürke) N.P.Taylor
  • Echinocereus nivosus longisetus
 



 

Cultivation: E. longisetus  is relatively easy to grow and very attractive. Rot easily it is sensitive to overwatering (rot prone), so perfect soil drainage is a must.  In the summer they need an airy location in bright sun; well watered when it's hot. To achieve the best spine density give these plants lots of sun. In the winter light, cool, and absolutely dry conditions. Very cold resistant  above approx -9 C or less for short periods of time.
In mild climate
they grow well when planted freely outside in well-drained soil.

Propagation: Seeds, Cuttings

 

 

 

 

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

Photo gallery Echinocereus



 

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