Xerophyte

Central Spines

0-2 very similar to the radials.

Description

Gymnocalycium gibbosumSN|8057]]SN|8057]] var. nobile is a local or morphological form of the very variable and widely spread Gymnocalycium gibbosumSN|8057]]SN|8057]] characterized by strong, more numerous, longer, overlapping, white yellow spines; it is usually larger than the typical gibbosum.

Flowers

Infundibuliform in the nearest periphery just around the apex, 45-60 mm long, 60-65 in diameter. Tepals ivory white with a brownish mid rib or occasionally reddish.

Blooming Season

Will flower without a distinct resting period.

Ribs

10-16 straight, divided in well distinct, angular ribs.

Stem

Deep olive-green to almost black, flat to almost spherical, 3-5(-10) cm tall, up to 12 cm in diameter, the apex is slightly woolly.

Radial Spines

7-10 (-12) 25-35 mm, strong, long, erect, overlapping, pastel-white (but also yellow or black), with a darker (reddish or brownish) base when young, that becomes whitish-grey as they age.

Fruits

Globose or fusiform, 20-40 mm long green with white bordered scale.

Areoles

Whitish-grey, elongated.