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Echinocerteus poselgeri
(Synonym: Wilcoxia poselgeri)

CACTUSPEDIA       

 


E. poselgeri (SB852 Jim Hogg Co, Texas, USA) has bright pink flowers, and makes a spectacular sight and an interesting addition to any collection.
 

Description: Shrubby, scarcely branched, initially erect, later sprawling or clambering.
Stem: Very tall and slender, dark coloured. up to 1.2 m, diameter 2 cm, ribs 6-10
Spines: tan-greyish white; 1 central up to 9 mm long, enlarged at its base, 4mm long; 8-15 straight radials, 4,5mm long, closely appressed (except at the stem tip)
Roots:  tuberlike, Contrarily to E. kroenleinii, the underground storage organ similar to dahlia tubers is not capable of producing new shoots. Those sprout out  only from the main cut stem. Each plant can have up to 8 tubers, 10-20 mm in diameter, with a length of 60-100 mm. The colour is light brown in youth, later brown.
Flower: Pink Rose/Mauve Magenta (Pink-Purple)
Fruits: Ovoidal 20 mm Long, 10-15 mm Ø, dark green to brownish, pulp white
Seeds: Black 1,5mm
Blooming season:  Blossoming time: Late Spring/Early Summer.
Remarks: It apparently looks like some Peniocereus species. However the flowers, fruits, and seeds of E. poselgeri are characteristic for Echinocereus, somewhat comparable to those of E. reichenbachii.
 


Tall 
pencil-thin stem arising
from a tuberous root system


Echinocereus poselgeri GL391
Falcon Lake, Texas, USA
Photo and © copyright by Mladen Turcinovic (Croatia)
 

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Green stigma and yellow  anthers
Family: Cactaceae (Cactus Family)

Scientific Name: Echinocereus poselgeri Lemaire
Published in: Cactées. 57. 1868 Table 2  fig. 2

Conservation status: Listed in CITES Appendix II

Taxonomy: Section Wilcoxia

Type: Lectotypus (L. BENS0N 14 , 1982): USA: Texas, Rio Grande'aboy*Belleville, H. POSELGER coll. 1850 [MO]

Origin: West & South West USA (Texas) and Mexico (Coahuila, Nuevo Leon, Tamaulipas) Locus typicus: USA: Texas, near the Rio Grande, H. POSELGER

Habitat: Among thorn scrub in alluvial soils; 0-200 m;

Synonyms:

  • Cereus tuberosas Poselger.
    Allg.Gartenz. 21: 135, 1853 nom. illegit.
  • Echinocereus tuberosus (H. Poselger) T.  Ruempler
    in FÖRSTER 's Handb. Cacteenk‑,ed. 2: 783, 1886
  • Wilcoxia tuberosa (H. Poselger) K. Kreuzinger
    Verzeichnis: 18, 1935
  • Cereus poselgeri (Ch. Lemaire) J. M. Coulter.
    Contr.U.S. NAT.Herb. 3: 398, 1896
  • Wilcoxia  poselgeri (Ch. Lemaire) N. L. Britton & J. N. Rose.
    Contr.U.S. Nat. Herb. 12: 434, 1896

Common Names include:  Sacasil,  Zocoxochitl Pencil cactus, Dahlia hedgehog cactus.
 

 


Buds just before opening
 


Some photos and information in this page courteously provided by Dieter & Irene Waldeis

Cultivation:  Do not over water. They need to be kept in a cool, dry place during winter rest (at -5 +10°C).   This is important for the flowers as well as for their health. Without this cool winter period they normally won't get any buds.  It  is quite frost hardy -7 (-10)° C.
Sun Exposure:
Best in full or partial sun exposure. In mild climate they grow well when planted freely outside in well-drained soil.
Propagation:
Seeds (usually), it also can be grown from cuttings, as it can branch with time.

Photo of conspecific taxa, varieties, forms and cultivars of plants belonging to the Echinocereus posselgeri complex (This Taxon has lots of synonyms ( like many other cacti) whit several controversial varieties and subspecies and comprises different forms):

 

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

Photo gallery Echinocereus



 

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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