Millettia glaucescens Kurz, J. Asiat. Soc. Bengal, Pt. 2, Nat. Hist. 42: 67 (1873) (syn: Millettia prainii Dunn; Phaseoloides glaucescens Kuntze);
Bhutan (N); India (N); Assam; Sikkim; West Bengal; Myanmar (N); Nepal (N); Thailand (N) as per ILDIS;
Legume from West Bengal for Id: Request for Id
Nice photographs. Looks like some Winged beans.
… After observing the flowers and the woody legume, my guess goes with Genus Millettia. But cant assign it to any spp.
As collected later from the same area and identified by Dr. Anant Kumar, this is Milletia glaucescens.
Millettia glaucescens Kurz
References: POWO Catalogue of Life The Plant List Ver.1.1 ILDIS GBIF (High resolution specimens) High resolution specimen High resolution specimen 2 Annotated checklist of Flowering plants of Nepal India Biodiversity Portal