Trigonella

Prostrate, decumbent or ascending annual herbs, hairy or glabrescent. Leaves alternate, pinnately trifoliolate; usually petiolate; stipules conspicuous, leafy, adnate to petiole. Inflorescence axillary, flowers solitary, in clusters, or short racemes; calyx campanulate, teeth equal (at least in Victoria); petals yellow; standard narrow, obovate or oblong, gradually narrowed at base; wings and keel shorter, obtuse; stamens diadelphous, 9 united by their filaments around ovary, the tenth entirely free or fused at base, filaments not dilated at the apex; ovary more or less sessile, ovules many. Pod linear-oblong, straight or curved, indehiscent or dehiscent along 1 suture; seeds 1-many, more or less rhomboid (at least in Victoria), tubercled, wrinkled or smooth, exarillate.