Xerophyte

Flowers

Mostly near the apex, bell-shaped, pure white or white with a hint of lilac, about 30 mm in length and diameter. Inner petals are white to light pink, outer petals are a light purple colour with a dark purple centre strip. Filaments and style are white. Anthers creamy-white to pale yellow.

Forma Aurea

The crested schizochromic form (Gymnocalycium eurypleurumSN|21445]]SN|21445]] f. aurata cristata) has pale yellow stems due to the absence (or reduced production) of chlorophyll pigments

Blooming Season

Flowers freely throughout the Summer.

Spines

Stout, awl shaped, glassy white to light-brown in clusters of about 7 mostly straight up to10-30(-60) mm in length, very symetrical, and tending to curve upwards, away from the body of the cactus. no obvious central spine. The 1 or 2 central spines - when one exists - have the same length.

Ribs

Very flat and broad, with scarcely evident protuberances and often a small horizontal indention above the areoles.

Stem

Fan shaped somewhat depressed along the line meristem yellow to orangish, 7-10 cm in width, with a somewhat sunken apex.

Fruits

Round or barrel shaped.

Areoles

Covered by some tomentum.