Sprawling, trailing, grey-green shrublet up to 35cm and 1m in diameter. Leaves 1-foliolate, light grey-green, opposite, cordate in shape and clasping the stem; flowers solitary, up to 10mm long, yellow turning brownish-orange after pollination. Pods oblong, upper margin convex.

For Carl Gottlob Rafn (1769-1808), Danish botanist and co-author of Flora of Denmark and Holstein.