Abstract

A new species of Campsiandra (Caesalpinieae) from the Lower Rio Negro and Rio Amazonas of Brazilian Amazonia is described and illustrated. Campsiandra robclarkiana resembles C. nutans Stergios by the size and general characteristics of the flower and inflorescence, and C. steyermarkiana Stergios by the tortuous stamens. However, it is distinguished from all other species of the genus by the highly coriaceous nitid leaflets with appressed puberulence on both surfaces and without a waxy coating underneath.