PROENÇA, C. E. B.; FARIAS-SINGER, R.; GOMES, B. M. PLEONOTOMA ORIENTALIS (BIGNONIACEAE – BIGNONIEAE): EXPANDED DESCRIPTION, DISTRIBUTION AND A NEW VARIETY OF A POORLY KNOWN SPECIES. Edinburgh Journal of Botany, v. 64, n. 1, p. 17–23, 6 Mar.2007.