Abstract: The present study tends to investigate the anatomy and palynology of Hymenocrater species in Northeast of Iran. To conduct the comparative study of anatomy characters, sections from stem and leaf were prepared using microtome and differential staining. In this part of investigation, arrangement of vessel in stem, stoma type and arrangement of mesophyll in leaf were studied. For the palynology study, too a comparative investigation on the species showed, the pollen was problate spheroidal, hexacolpate, bireticulate and semi- tectate. Finally a variation between the shape of lumina in eu-reticulate and supra reticulate of pollen was observed.