Xerophyte

Habit

Solitary, rarely sprouting near base to produce 2-3 branches, but sometimes forming large clusters, often branching or budding above.

Central Spines

1 to 3, longer than radials of which one, yellowish white to red, erect, hooked, 16-27 mm long.

Seeds

1,2 to 1,7 mm long, 0,5-0,8 mm in diameter, finely tuberculate.

Roots

Long fibrous roots.

Flowers

Radial, 4-5(-7) cm long, 3-4cm in diameter, yellow, with a deep red centrer. Pericarpels scaly. Tube will developed. Inner perianth-segments oblong, acute, widely spreading. Stygma lobes pale yellow to white.

Blooming Season

Summer to Autumn (Fall).

Ribs

12-15, more or less oblique or twisted, thin, high, undulate on the margin, not tuberculate 1-2 mm wide, 14-18 mm high.

Stem

7-15(-30) cm high, 5-9 cm in diameter, globose to elongate globose, when young, growing cylindroid later, yellow-green to dull blue-green.

Radial Spines

9 to 17, slender, often 4 cm long, some white, others brownish, radiating, straight, 9-24 mm long.

Fruits

Round, to ovoid, red with white pulp, 8-15 mm long, 10-14 mm in diameter, scaly, nearly naked, fleshy at maturity, indehiscent.

Areoles

5-9 mm long, 2-3 mm wide, 20 mm apart, with extrafloral nectaries.