Stem and Leaf Anatomies of Some Globularia L. (Plantaginaceae) Taxa Grown in Türkiye and Their Systematic Value

There are 22 species of the genus Globularia L. (Plantaginaceae) in the world. This genus is represented by 11 taxa in Flora of Turkey. Five of these 11 taxa are endemic to Türkiye. The aim of this study is to examine stem and leaf anatomy of four taxa of Globularia (Globularia davisiana O. Schwarz, G. aphyllantes Crantz, G. alypum L. ve G. orientalis L.) in Türkiye. Stem and leaf sections of the taxa were taken with a Leica slide microtome. The anatomical features of plants were examined under a light microscope and their photographs were taken with a Leica DFC 290 digital camera attached to the microscope. According to the study results, the studied taxa has the equifacial leaves and anomocytic type of stomas. The stem and leaves of them have covering secretion trichomes. The related anatomic characters on stem and leaf were discussed and the anatomical features of the species were compared with each other according to these characters.