Gymnocalycium alboareolatum
Gymnocalycium alboareolatum is a species of cactus in the genus Gymnocalycium, endemic to Argentina.
Description
It grows as a solitary, flattened, spherical plant up to 6 cm in diameter with a large taproot. Its 9–11 ribs feature chin-like projections up to 1 cm long. The cactus lacks central spines but has 6–7 stiff, curved, brown marginal spines, also up to 1 cm long. It produces silver-white flowers up to 6.5 cm long and 4.5 cm wide, and its blue-green fruits are egg- to club-shaped, measuring 2.5–3 cm.
The Gymnocalycium alboareolatum is a cactus native to the area around Villa Bustos in La Rioja, Argentina, found growing on slopes on monte shrubland at altitudes of 1000 to 1500 meters.
Taxonomy
Described in 1985 by Walter Rausch, its name derives from the Latin words albus and areolatus.