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Corolla small; standard white, blue-purple or white with a purple blotch inside, obovate to rounded.
Seeds oblong, minutely granular to granular, with a small persistent white funicular remnant.
Ovary many-ovuled; style short, slender, slightly incurved, with a small capitate stigma.
Vexillary stamen joined to the others, at least initially; anthers uniform.
Pod linear-oblong, compressed, somewhat constricted between the seeds.
Calyx 5-lobed, the two upper lobes joined along much of their length.
Trailing or climbing perennial herbs from a woody rootstock.
Leaves pinnately 3-foliolate; stipules and stipels present.
