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Ancistrocactus scherii

CACTUSPEDIA       

 


Ancistrocactus scherii GL707 Falcon Lake. Zapata Co. TX.
Flowers:  Yellowish/greenish brown.
 


The natural hooked spine, was used
by Indians to catch tiny fish.

Description: Solitary cactus (unless injured) until very old age, or with few branches from ground level when old. Seedlings and immature plants often have narrowly cylindrical stems. With age, the stems broaden distally.
Stem:
Cylindric to club-shaped, or spheric, up to 17cm tall, 5-8 cm in diameter.
Spines: Radial spines 13-28 per areole, translucent yellowish, tips red-brown, longest spines 6 to 28 mm long; central spines 3-4 per areole; abaxial central spine tan to whitish 1 per areole, hooked terete or slightly flattened, generally whitish or light brown, 12-38 mm long; adaxial central spines (2-)3 per areole, brown to dark reddish brown, erect, straight, 19-50 mm long. Juvenile spines are all radials numerous, short, tightly appressed and pectinately.
Roots:
Long, fleshy, tuberlike taproots with bulbous swellings, sometimes having bulbous secondary roots, frequently horizontally oriented.
Flowers: Bright green to yellowish (rarely pink to pale reddish) with a brown midline. Flowering in February-March.

Remarks: A. scheeri
is relatively similar above ground to the related species A. brevihamatus, but the roots of A. scheeri are frequently horizontally oriented, strongly tuberlike and  always separated from the stem by a fragile constriction,  in contrast to the short, succulent, vertical  taproots of A. brevihamatus  and  also  the  stems of immature A. brevihamatus, are not obscured by spines and are often flush with the soil surface, whereas those of A. scheeri are nearly hidden by spines and fully exposed above the soil.
Ribs on the stems of A. scheeri seem straighter and better defined than ribs of A. brevihamatus, even prior to sexual maturity.

Cultivation: Need a relatively  large or deep pot to accommodate their extensive roots. They will do their best with lots of sun and become stressed with inadequate light which could result in poor growth and unnatural shape.

Family: Cactaceae (Cactus Family)

Scientific Name: Ancistrocactus scheeri (Rose) Britton & Rose 1923
Published in: The Cactaceae; descriptions and illustrations of plants of the cactus family  4: 4, f. 1, 1923

Origin: USA (Texas); Mexico (Nuevo León, Tamaulipas).

Habitat: Grows under drip line of brush in Tamaulipan thorn scrub community, on plains and low hills, sandy, loamy, silty, or gravelly soils; 20-500 m;

Synonyms:

  • Pediocactus scheeri  (Salm-Dyck) Halda 1998
  • Sclerocactus scheeri (Salm-Dyck) N.P. Taylor 1987
  • Ferocactus scheeri  (Salm-Dyck) N.P.Taylor 1979
  • Echinocactus scheeri  Salm-Dyck
    Published in: Cact. Hort. Dyck. 1849, 155. 1849
  • Ancistrocactus megarhizus (Rose) Britton & Rose;

Common Names include:

  • Fishhook Cactus,
  • Twisted Ribs Cactus

Conservation status:   Listed in CITES appendix 2.


 

 


Photo of conspecific taxa, varieties, forms and cultivars of
plants belonging to the ancistrocactus sheerii complex:

Photo gallery: Alphabetical listi of Cacti and Succulent pictures published in this site.

Photo gallery ANCISTROCACTUS



 

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