This species is native to Bolivia. This genus (about 200 species around the world) is one of many important legume trees in tropical forests (along with Acacia, Mimosa, Inga, etc). The tree is mycorrhizal and can restore fertility to tropical soils. The flowers are individually quite small but are clustered in large and showy "bottle brush" inflorescences. The red coloration of the flowers and the extention of the stamens suggest what pollination?