يك گونه جديد و يك گزارش جديد از جنس Agrostis براي فلور ايران

Agrostis gariana is described as a new species to the science from Lorestan province, Iran. The new species is closely related to A. canina from Sect. Agraulus. A. vinealis, as an Irano- Turanian element from Sect. Agraulus, is a new record for the flora of Iran. These species are compared with the closely related species and their distribution data and illustrations are provided.