Cajanus cajan ~ Pigeon Pea
Pigeon peas, or tree bean as they are known in Taiwan, are a perennial bush type bean which grows into a shrub/small tree. The beans come after the yellow flowers and the plants can be harvested for multiple years. Grown in much of Asia and now worldwide, the beans are used in cooking as a dry bean.
As with many bean species, soaking the seeds until swelling is a good way to speed up germination.