SDS-PAGE of seed protein profiles , SEM of seed coat surface patterns and selected macromorphological
characters were studied in the related taxa Caesalpinia gilliesii, C. pulcherrima, C. sepiaria and Delonix
regia. The obtained characters were used as one set of data and analyzed using the NTSYS-pc program.
The dendrogram produced showed a closer relationship between D. regia & C. pulcherrima. Taxonomic
relationships between the four taxa were discussed in the light of their morphological, anatomical,
embryological and phytochemical criteria. Merging of C. pulcherrima in the genus Delonix has been
suggested.