Robynsiophyton

Annual or suffrutescent herbs, prostrate-ascending or erect. Leaves digitately 3-foliolate or sometimes simple in upper parts of branches; stipules 2, free; stipels absent. Inflorescences axillary or sometimes terminal subcapitate racemes; bracts linear-lanceolate. Flowers subsessile, bracteoles absent. Calyx 2-lipped, upper lip 2-lobed, lower lip 3-lobed; calyx +/- as long as corolla, valvate in bud; tube cup-shaped; limb of 5 equal, narrowly lanceolate lobes longer than tube. Corolla : petals clawed; standard without callosities, longer than wings and keel; wings narrow; keel of petals similar to wings, cohering towards tip. Stamens monadelphous with 5 fertile stamens alternating with antherless staminodes; fertile stamens with filaments longer than those of staminodes and with globose to ellipsoid, subbasifixed anthers. Ovary sessile, tomentose; style erect, +/- as long as ovary, glabrous; stigma terminal, capitate; ovules 6-10. Pod +/- compressed, acute with +/- persistent style, dehiscent. Seeds subreniform, with rudimentary arillus.