Description: Solitary cactus.
The form “longispinum” has longer and stiffer spines but
is practically identical to the normal form in stem and flowers
glaucous-green to grey-black, discoidal that
became elonged with time 10-25 cm tall, up to 12 cm in diameter, the
apex is slightly woolly.
Ribs: 10-16 straight, divided in well distinct angular ribs.
Radial spines: 5-7 25-35 (45) mm long
slightly bent against the plants body, clear brown with a darker base
when young, that became whitish-grey with a black base as they age.
Central spines: 0-2 very similar to the radials.
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, throat greenish with a basal reddish area. Style
white-greenish, stigma white. Anthers cream coloured.
Fruits: Globate or fusiform, 20-40
mm long green with white bordered scales.
Remarks: Seems to be a pretty variable plant you
might get some other names which are effectively the same plant.... and
also not sure all plants identified as this are really this.
Propagation: Direct sow after
last frost. (seldom
Fruit must be significantly
overripe before harvesting seed; clean and dry seeds
Photo of conspecific taxa, varieties, forms and
cultivars of plants belonging to the
has lots of synonyms
like many other Gymnocalyciums)
whit several controversial varieties and subspecies and comprises a multitude of different forms, but where each form
is linked to others by populations of plants with intermediate