Gymnocalycium stellatum var.
paucispinum (Backeb.) R.Strong
The 'Gymnocalycium asterias (
or asterium) '
synonym was recently deemed an
illegitimate name during
reclassifications, but it is still widely used.
Origin: Argentina (Cordoba, Catamarca)
Conservation status: Listed in
CITES appendix 2.
stellatum subsp. occultum (Frič ex Schütz) H.Till & W.Till,
- Gymnocalycium obductum Piltz,
Pubblished in: Succulenta 69(4): 74-78 + title
plate, 1990 = stellatum
asterium A. castellanos 1957 (Illegitimate name)
Gymnocalycium stellatum ssp. asterium
occultum Fric ex Schütz 1962
Description: G. stellatum var paucispinum
is a beautifull
slowly growing plant with a noticeably flatten
body, at first
solitary, later clustering.
Stem: Dark grayish-brown to olive coloured epidermis, flattened
globose, 7.5-10 cm in diameter. Will
offset after a considerable period of time.
Ribs: 7-11, flat rounded, without prominent chin-like
Spines: Usually 3 (occasionally more) brown, becoming grey with
short, straight to slightly curved and flattened against the stem
(rarely sticking out - easy cactus to handle)
Flowers: Creamy-white with a dull red
throat, up to
6,5 cm long, 4.5 cm in diameter.
Fruit: Cylindical, tannish-green.
Blooming season: Flowers are produced in late spring and remain
open for up to twelve days.
Two subspecies are
“occultum” subspecies occurs in Catamarca.
“stellatum” subspecies occurs in Cordoba.
Cultivation: This Gymnocalycium is supposed to be one of the most
difficult species in cultivation, and very slow to get to a reasonable
size. It will offset after a considerable period of time. It is a summer
growing species that needs regular water in summer (but do not
over-water ). Keep rather dry in winter. This plant does not like
extremely bright situations. Give it some shade during the hottest
part of the day. Keep this plant in a
growth will stop altogether. Feed it with a high potassium
fertilizer in summer. It is quite frost resistant if kept dry (hardy to
Propagation: Direct sow after last frost.(seldom
Photo of conspecific
taxa, varieties, forms and cultivars of plants
belonging to the Gymnocalicyum