Erect, perennial herb, up to 0.5 m high; stems rigid, longitudinally ribbed, each rib pubescent?, densely covered with orange pellucid glands. Leaves pinnately trifoliolate. Leaflets ovate-orbicular or subrhomboid, pubescent especially on veins, conspicuously orange, resinous-dotted on undersurface. Stipules conspicuous, linear-lanceolate. Inflorescence an erect, long-pedunculate, axillary, several-to many-flowered raceme, much longer than leaves. Flowers yellow; standard petal pubescent externally. Flowering time May.