Rebutia glacilifolia boreali
(This plant comes in a 3.5" pot. You will receive a very similar plant to the one in the picture. It may or may not be blooming at the time of your purchase. The plant is shipped in its pot to prevent any damage to the roots).
Rebutias bloom easily and have relatively large daytime flowers. They come from the lower part of the stem. They are borne freely at the base of the stems and last several days.
Frost tolerance: 9b-12
Minimum avg. temperature: 45°F (8°C)
Sun exposure: Full sun to part sun
Origin: Mountains of northern Argentina.
Growth habits: Clumping, pale green flattened heads, 2.5" in diameter (6 cm), 1.4" tall (3.5 cm); tubercles in 16 to 20 rows; 0 or 1 central spine, 0.1" long (2.5 mm), 20-30 whitish very small radials.
Some of the information in this description has been found at desert-tropicals.com, llifle.com and cactus-art.biz