The present research deals with the unique species in genus of Samolus L. which is
Samolus valerandi L. In Iraq. The morphological characters of stems, leaves, flowers,
bracts and bracteoles were found to be important valve to separate this species from other
species of primulaceae. The anatomy of stem, leaves, petioles and Peduncles characters
were found to be of diagnostic value for the species. Samolus valerandi has Tricolporate
pollen grains, and distributed in two geographical districts DWD and LSM.