Umbilicus oppositifolius

Umbilicus oppositifolius, common names lamb's-tail and gold drop, is a succulent, perennial flowering plant, a species in the genus "Umbilicus" of the family Crassulaceae. It is endemic to shady mountain areas in the Caucasus.
It is widely listed under its synonym "Chiastophyllum oppositifolium".
It is a hardy, prostrate evergreen growing to with large fleshy leaves and racemes of tiny, sulphur-yellow flowers.
It has gained the Royal Horticultural Society's Award of Garden Merit. 