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Herbs or low shrubs, sometimes almost acaulescent; all parts of plant except petals and stamens with numerous dark, scattered glands; stems sometimes with plumose setae.
Stamens 10; filaments alternately longer and shorter, variously hairy, villous basally in the Flora area; anthers uniform, opening by longitudinal slits.
Leaves bipinnate, imparipinnate; leaflets opposite, usually small; stipules fringed, serrate or laciniate; stipels when present small and setaceous.
Inflorescence a terminal or leaf-opposed raceme, elsewhere sometimes axillary; bracts small, fringed, deciduous; bracteoles lacking.
Pods oblong to ovate, straight or falcate, compressed, longitudiunally dehiscent, the valves often glandular.
Petals 5, imbricate, unequal, the upper one modified, ± funnel-shaped, the others in two lateral pairs.
Ovary subsessile, few–many-ovulate; style often incurved and clavate apically; stigma terminal.
Flowers hermaphrodite, pedicellate, pink to red (elsewhere sometimes yellow with red markings).
Seeds compressed.
