This member of the Crassulaceae family was given this name by James Edgar Dandy in 1948. It is found in England, France, Spain, Portugal and south west Turkey, growing between rocks and in old brick-walls. Needs to be kept moist, and can do with little to much sun. It will stay green in winter and it can't stand frost. The tuberous root will grow to two centimetres in diameter, the leaves to ten centimetres in height. The 30 centimetres high flowers are pale green, and besides seeds, it can be reproduced by leaf cuttings and dividing of the roots.
The genera name means 'navel', as to dimpled leaf centres. The species name means 'rock-growing'. Wild plant from England. Wild plant from England. Wild plant from Lisbon, Portugal.
