[2] Gymnocalycium nigriareolatum is a cactus that grows either as a solitary plant or in clusters.

The plant typically has 10 sharp-edged ribs with shallow, transverse notches.

These spines are 1–3 cm long, with the three lowest being the longest.

The flowers are funnel-shaped, either white with a pinkish throat or carmine red.

[3] This species is native to the Sierra de Graciana and Cuesta de los Angeles in the Catamarca province of Argentina, where it grows on rocky terrain at altitudes of 500 to 1500 meters.