PROENÇA, C.E.B. et al. 2007. PLEONOTOMA ORIENTALIS (BIGNONIACEAE – BIGNONIEAE): EXPANDED DESCRIPTION, DISTRIBUTION AND A NEW VARIETY OF A POORLY KNOWN SPECIES. Edinburgh Journal of Botany. 64, 1 (Mar. 2007), 17–23. DOI:https://doi.org/10.1017/S0960428606000680.