Article

The morphology, anatomy of the stems, leaves, SEM of pollen and seed coat surfaces are used to reassess the taxonomic relationships between Ammannia species. The species occurring in Egypt are systematically revised. The results clearly indicate considerable differences between the studied species. The study revealed the presence of five distinct species. On the bases of the observed morphological and anatomical differences Ammannia baccifera is differentiated into 2 different varieties. These varieties are Ammannia baccifera var. baccifera L. and Ammannia baccifera var. attenuata (Hochst. ex A. Rich.) Z. Turki. A key to the species is provided.