Erect, shrubs, unarmed; stems terete, grooved. Leaves alternate, 1-foliolate, often absent; stipules absent. Flowers in a terminal, leafless raceme; bracts caducous; bracteoles minute; calyx spathe-like, split above, irregularly 1-lipped, rarely 2-lipped, shortly 5-toothed; petals yellow; standard ovate; wings oblong; keel oblong, beaked; stamens monadelphous, anthers alternately long and short; ovary sessile, style incurved, stigma capitate, ovules many. Pod linear-oblong, compressed, dehiscent; seeds numerous, arillate.
1 species from the Mediterranean region, naturalised in Australia.