Micro-morphological study and First record of Nonea stenosolen Boiss. & Balansa (Boraginaceae) from Iran

For the first time, Nonea stenosolen Boiss. & Balansa (Boraginaceae) is recorded from Iran. The specimen was collected during a field investigation in Kurdistan in 2008. Illustrated descriptions of the species together with a short note on the species as well as its distribution in Iran are provided. Micro-morphological studies on pollen grains and also fruit surface were performed. Pollen grains were heteropolar and 3panto colporate with more or less psilate surface. Mericarp surface had white glands on a wrinkled substrate which is the most important diagnostic feature in species recognition.