Superb compact species from the USA or Mexico.

Plant raised from seed obtained from a specialist cactus nursery in 1986.

Identity unknown - if you may be able to identify this plant, please let me know.

Flowers approx. 6.5cm. diameter produced in midsummer, remaining open for about three days, longer in cool weather.

Kept slightly moist in winter at a minimum temperature of 50 degrees F.