Abstract
Byttneria catalpifolia subsp. catalpifolia is presented as a new record and the rediscovery of Byttneria fulva for the Pará state, based on collections from the region of the Volta Grande of Xingu river. Morphological descriptions, geographic distribution data and illustrations are presente, and taxonomic relationships of the two species are discussed.
Key words:
Amazon; distribution; taxonomy; Xingu
