Xerophyte

Central Spines

1 to 4 (of which one longer and pointing downward), up to 3,5 cm long, stouter and flatter than the radials, often banded.

Description

Ferocactus macrodiscusSN|4317]]SN|4317]] is a medium sized barrel cactus with a depressed-globose stem and blue-green epidermis. Growth from seed is quite rapid and plants will flower when only a few cm across. Flowers are white with pinkish-purple striped petals. Two subspecies are recognized, the nominate form and subsp. septentrionalis (J.Meyrán) N.P.Taylor.

Flowers

Obconic,, 3-4(-5) cm long and about 3-4 cm in diameter. Inner perianth-segments linear-oblong, acute bright purple/pink with pale margins. Stamens and style included.

Blooming Season

From early spring into summer.

Spines

Yellow or red and curved.

Ribs

(13-)16 to 21(-35), somewhat flattened, sometimes acute on the margin, somewhat depressed at the distant areoles.

Stem

Solitary, flat, depressed-globose, or disc-shaped up to 10 cm tall and 30-45 cm in diameter (but up to nearly 60 in some cases).

Radial Spines

6 to 8, more or less curved backward, 2-3 cm long.

Fruits

Nearly spherical, to 4 x 3 cm, red.

Areoles

5 to 10 mm long with yellow felt sunken in notches in the ribs.