Mammillaria standleyi, L086

Mammillaria standleyi, L086.
Collector : Alfred Bernhard Lau
Locality : Mexicó : border Chihuahua - Sonora (Sierra Obscura 200m) 
Fairly easy to grow, requiring typical mammillaria care. Not sure about its frost resistance though as this is the first season it rests at low temperatures.

Echinopsis flower

Easy to grow. Good drainage, ventilation and a cold winter rest ensure next year's flowering.