a large growing and solitary or group forming cactus with woolly stem
Most of the plants after a juvenile phase with only radial spines
develop the longer central spines, giving it its characteristic sea
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.
conical/ovate, more or less erect, very firm, 14–17 mm wide up to
2 cm long with a narrow, bare groove
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.
Flowers: Diurnal pure yellow,
3 to 6,5 cm diameter.
Fruits: Yellow green 15-20 mm long,
juicy with attached flower remnants.
Scientific name: Coryphantha
In: Monatsschr. Deutsch. Kakt. Ges. 3: 249 (1931)
Taxonomy: Subgenus Coryphantha,
Section II. A Coryphantha,
Series II. A.c. Salinensis,
By: Dicht&Lüthy Class.
Durango - Mexico (North
Conservation status: Listed in
CITES appendix 2.
Common Mexican Names include:
Biznaga de Piña
species name "longicornis" derives from the Latin 'longus'=
long; and Latin 'cornus'= horn; for the long curved spines
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: 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.