This is the biggest among the Gymnocalyciums and the the crested form can reach impressive dimension.
Big plant like this are very rare and highly prized by cactus collectors.

Cultivation: G. saglionis grow very slowly.  These plant tolerate extremely bright situations  but are likely to suffer from sun scorch or stunted growth if over exposed to direct sunlight during the hottest part of the day in summer.
Water regularly in summer but allow to dry fully before watering again. During the winter months they should be rather kept dry. Since they are big sized plants need plenty of space for their roots, repotting should be done every other year or when the plant has outgrown its pot.

Propagation: Gafting or cuttings  (It don't produces offsets)

Photo of conspecific taxa, varieties, forms and cultivars of Gymnocalycium saglionis:

• Gymnocalycium saglionis
• Gymnocalycium saglionis forma cristata
• Gymnocalycium ticarense (G. saglionis ssp. tilcarense)

Scientific name:  Gymnocalycium saglionis (Cels) Britton & Rose1922

It is also occasionally misspelled 'saglione'.

Origin:  Argentina

Conservation status: Listed in CITES appendix 2.

Common Name: Giant Chin Cactus

• Echinocactus saglionis Cels 1847
• Echinocactus hybogonus Salm-Dyck 1850
• Brachycalycium tilcarense Backeberg of 1942
• Gymnocalycium saglionis subsp. tilcarense (Backeberg) H Till and W Till 1997