Alysicarpus vaginalis  

prostrate herb, stems erect, creeping. Leaves 1-foliate, dimorphic, lanceolate, lanceolate-oblong, dark greenish, often with a maroonish hue, pale underneath. Inflorescences panicle, terminal or axillary. Calyx tube green, calyx lobes 5, green. Corolla papilionaceous form, 5, free, Standard out side pale violet, wings violet, keels pale greenish, tips pale violet. Stamens 10, connate, filament greenish above. Fruits legume, upright, green, drying brownish. Seeds numberous.