زهرا کریمی - MSc Graduate in Plant Systematics & Ecology, University of Mazandaran, Babolsar, Iran
آرمان محمودی اطاقوری - Associate Prof., Department of Plant Sciences, University of Mazandaran, Babolsar, Iran
حبیب زارع - Asistant Prof., Nowshahr Botanical Garden, Mazandaran Agricultural and Natural Resources Research and Education Center, AREEO, Sari, Iran.
پیروز عزیزی - Prof., Department of Soil Sciences, Faculty of Agricultural Sciences, University of Guilan, Rasht, Iran

The genus Plagiomnium (Mniaceae) of mosses embraces about ۳۴ species in the world out of which seven species are mainly distributed in the northern forest areas of Iran. The aim of this study is biosystematics survey on this genus by the help of numerical taxonomy as well as palynological methods within the natural habitats of the Hyrcanian regions in Guilan, Mazandaran and Golestan provinces (north of Iran). After collection of samples from natural habitats, they were transferred to the laboratory, and were examined and analyzed. In this research, ۳۸ qualitative and quantitative morphometrical traits belonging to three species of Plagiomnium were studied. Also, by investigated spores of Scanning Electron Microscope (SEM), it was determined that, spores were spherical, exine surface granulated, and sculptures were gemmate type. By using Cluster Analysis (CA), and Principle Component Analysis (PCA), the relationships between the Plagiomnium species were studied and it was determined that, the numerical taxonomy as well as palynological study are able to classify Plagiomnium species.    

exine, numerical taxonomy, Morphology, Palynology, Sculptures