Parodia tuberculata
Also known as Parodia quecha, Parodia tuberculata is a globular cactus species with small orange-red blooms. It is
Flowers: Smallish, campanulate, 3 to 5 flowers at a time clustered around the meristem,
Blooming season: Blooms are produced over a long period in late spring to mid Summer.
It is a summer grower species that is easy to cultivate and recommended for beginners. The whole Parodia tuberculata complex has delightful flowers and the plants remain compact. Another advantage is that the plants are cold hardy in winter if kept dry.
Growth rate: It is a slow growing but easily flowering species.
Watering: It requires full sun or light shade and careful watering to keep plant compact, and maintain strong and dense spines and allow the pot to dry out between waterings. Keep dry in winter at a minimum temperature of 0°C.
Hardiness: It is reputedly resistant to frost if kept on the dry side prior to, and during, cold weather and requires a winter rest period (hardy to -7° C, or less for short periods). Parodias grow in nature at high altitudes, and do not thrive well at high temperatures in cultivation. They will often go dormant in mid-summer, and resume growth again when the weather cools in late August. They can tolerate amazingly low temperatures for long periods of time. All species can take a frost, even when not bone dry
Exposition: The plant tolerates extremely bright situations but enjoys filtered sunlight or afternoon shade
Uses: It is an excellent plant for container growing. It always looks good and stays small. It look fine in a cold greenhouse and frame or outdoor in a rockery.

Some of the information in this description has been found at desert-tropicals.com, llifle.com and cactus-art.biz