| Field notes | Open alluvial thicket along a tributary of the Yom River, in logged, fire-prone deciduous forest with much teak & bamboo; shal bedrock; vine; stem, inflorescence axes, leaf axes green; calyx light greenish; standard dull violet outside, inside violet with a white midstreak above claw; wings violet, keel violet in upper part, lower 1/2 whitish, anthers greyish; filaments, stigma, style white; pods light green; leaflets dark green above light green underneath |