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  Coryphantha longicornis (“grandis”form)
(Syn: Coryphantha grandis)
CACTUSPEDIA       

 


Coryphantha longicornis (“grandis”form)
It is a large growing and solitary or group forming cactus with woolly stem tips.
Most of the plants after a juvenile phase with only radial spines develop the longer central spines, giving it its characteristic sea urchin appearance.
 

Description: C. longicornis is a large growing and solitary or group forming cactus with woolly stem tips.
Stem: Fat squat globose to short cylindrical glossy green or dull green, up to more than 9-20(-30) cm high and 10-15 cm broad.
Tubercles:
Spirally arranged, conical/ovate, more or less erect, very firm, 14–17 mm wide up to 2 cm long with a narrow, bare groove above; on new growth the groove may show some felt. Axil bare or slightly woolly with one gland.
Areoles: Woolly when young.
Central spines:
3, rigid, stiff, white to brown, often with black tips, about 1.2-2,5 cm long. The lower one is curved and descending, while the upper and lateral ones are shorter.
Radial spines: About 12, translucent whitish, acicular, acicular, equal straight or curved, short, gray at tips , 5-15 mm long.
Roots: Taproot.
Flowers: Diurnal pure yellow,
funnel shaped, 3 to 6,5 cm diameter.
Fruits: Yellow green 15-20 mm long
, juicy with attached flower remnants.
 
Family: Cactaceae (Cactus Family)

Scientific name:  Coryphantha longicornis Bodeker
In: Monatsschr. Deutsch. Kakt. Ges. 3: 249 (1931)

Taxonomy: Subgenus Coryphantha, Section II. A Coryphantha, Series II. A.c. Salinensis, By: Dicht&Lüthy Class.

Origin
Durango - Mexico (North America)

Conservation status: Listed in CITES appendix 2.

Common Mexican Names include: Biznaga de Piña

Etymology: The species name "longicornis" derives from the Latin 'longus'=  long; and Latin 'cornus'= horn; for the long curved spines

Synonyms:  

  • Coryphantha grandis L.Bremer,
    In: Cact. Succ. Jour. 50 (3): 134 1978

Notes: This is a variable species especially regarding the length of the lower central spine. The plants with shorter central spines are sometime referred as C. grandis, while those  with longer centrals are referred as C. longicornis. (But this classification is arbitrary and intermediate form are commonly found either in habitat and in cultivation)
 

 


Cultivation: In culture C. longicornis is without problems, and regularly shows its large yellow flowers. It does best in slight shade, but does well in full sun too. It is sensitive to overwatering (rot prone), and needs a very porous soil with good drainage.  It flowers quite early, but needs about 8-12 years to reach the typical, definite outlook.  It tolerates fairly low temperatures as long as it is kept dry (hardy to -5° C or less for short periods of time).

Propagation: Propagation is by seed.

 

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

Photo gallery coryphantha



 

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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