Xerophyte

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.

Description

Coryphantha longicornisSN|10216]]SN|10216]] is a large growing and solitary or group forming cactus with woolly stem tips.

Roots

Taproot.

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.

Flowers

Diurnal pure yellow, funnel shaped, 3 to 6,5 cm diameter.

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.

Radial Spines

About 12, translucent whitish, acicular, acicular, equal straight or curved, short, gray at tips , 5-15 mm long.

Fruits

Yellow green 15-20 mm long, juicy with attached flower remnants.

Areoles

Woolly when young.