gymnocalycium ragonesei

Gymnocalycium ragonesei is native to Chaco province, Argentina, inhabiting calcareous and clayey soils on hilly slopes. It is a polycarpic species with globose stems up to 6 cm diameter. Notably, it features slender spines and early spring flowering within its genus. Globose stem 4-6 cm diameter, with 6-8 rounded ribs. Radial spines thin, 5-8 mm long, pale yellow. Spring flowering produces white flowers with petals 3-4 cm wide.