Abstract
The species M. incorruptibile, M. fluminense, M. fulvovenosum, M. firmum and M. legale are described and illustrated. The most relevant characters for species delimitation as well as the preferred habitat and the geographic distribuition are discussed. New data concerning the habit and floral traits of M. fluminense are also presented.
Key words:
Taxonomy; morphology; Leguminosae; Machaerium; atlantic forest