herbs or undershrubs. Leaves odd-pinnate, leaflets numerous, sensitive, linear,
stipules setaceous or lanceolate, stipules absent. Flowers in axillary, simple
or branched racemes, bracts stipule-like, bracteoles adpressed to calyx. Sepals
5, connate in deeply 2-lipped calyx, lower ones entire or shortly 3-lobed.
Petals standard obovate, incurved, keels not beaked. Stamens 10, connate in 2
bundles of 5 each, anthers uniform. Ovary stipitate, linear, many-ovuled,
styles incurved, stigmas capitate. Fruits linear, long stipitate lomentum, with
2-8 flattened, separating joints, 1-seeded. Seed sub-reniform, compressed.