A Systematic Study of the Genus Merremiadissecta (jacq.) Hallier f.in Iraq
A critical taxonomic study of the genus Merremiadissecta (Jacq.)Hallier f. in Iraq. The present revision treats
with taxonomic determinations based on a phenological characteristics, leaf anatomy, and palynologicalstuded by light
microscope and scanning electron microscope, the results showed that climber plant with lobed leaf, cymose flower, and
capsule fruit, anatomic study notes Bifacial leaf, paracytic stomata on abaxial and adaxial surface, with cross section of
blade and margin, homogeneous cells composed of parenchyma cells in midrib, circular petiole, containing anguler
collenchyma with cortex surrounded one central vascular bundle and two lateral bundles, palynology study by light
microscope appears pollen grain monad, , radial symmetry and isopolar, tricolporate, medium in size, while the study of the
scanning electron microscopy has shown that the surface decoration in a small grid microreticulate. This research could be
provided a taxonomical key for Merremiadissecta plant in Iraq.
Keywords - Merremiadissecta, Merremia Iraq, SEM systematic study.