Taxonomy of the genus Schistophyllidium (Juz. ex. Fed.) Ikonn. (Rosaceae) from Iran

The genus Schistophyllidium is classified under subfamily Rosoideae and tribe Potentillinae. It has 3 species and 2 subspecies in the world and one representative: S. bifurcum (L.) Ikonn. (Syn.: Potentilla bifurca L.) in Iran, distributed in the North (Guilan province), Northwest (Ardabil province) and Western regions (Azerbaijan, Kurdistan and Hamedan provinces). In this research, morphological characters of 22 populations of this species were examined using digital microscopy. Then, their important diagnostic characters were identified and compared with that of allied genera, such as Potentilla and Argentina. Based on the current result, another structure, number of theca and style position (for subtribe delimitation); leaf types, number of blade lobe, number of leaflets of cauline leave (for generic isolation); petiole, leaf and stem hair types plus achene sculpturing pattern (for species identification) are important diagnostic evidences that can be used for separating different taxonomic ranks. The result showed morphological diversity especially plant height and terminal and lateral leaflets characters) between the studied populations

کلیدواژه ها:

Schistophyllidium ، Taxonomy ، Morphology ، Rosaceae ، Iran