Chiastophyllum oppositifolium syn Umbilicus oppositifolius

A shade loving succulent. Clusters of unique bell-shaped, lime-green flowers.

Lamb's tail or gold drop, is a hardy, mat-forming succulent for dappled shade. It is highly valued for its unique architectural form and has received the Royal Horticultural Society's Award of Garden Merit. 

An attractive alpine succulent, another treasure from the Caucusus. It is a hardy, prostrate evergreen growing to 25 cm with large fleshy leaves and racemes of tiny, sulphur-yellow flowers making a wonderful display. 

Wikimedia image in trough by Wilhelm Zimmerling PAR