Evaluation of taxonomic value of morphological traits compared to micro-morphological traits pollen grains in confirmation of taxonomic position Polygonatum genus in Iran

Polygonatum)Asparagaceae (genus of 60 species in the world. 3speciesis from this genus distributed in Iran , namely P. glaberrimum and P .orientale and P .sewerzowii .Taxonomic research on 3 species consist of morphology and micromorphology of pollen grain due to comparative with value characteristics. Present study demonstrates the high value characteristics of fine morphologies compared with morphological traits so that the possibility of creating boundaries more precise in the way it provides and the taxonomic position now in the genus Polygonatum confirmed.