The Yellow chin-cactus, Gymnocalycium reductum var. leeanum, is a small cactus that usually grows in clumps. This species flowers readily and profusely. Moreover, the flowers are large (5-6 cm in diameter), pale yellow and remarkably long-lasting, a single bloom often surviving for ten days or more. Gymnocalycium leeanum is a particularly good species to have, it flowers are among the first cactus flowers to appear each year. Buds are seen in February usually and the first blooms may open at the beginning of March and continue into autumn.
Some of the information in this description has been found at desert-tropicals.com, llifle.com and cactus-art.biz
