Morphological, Anatomical and Palynological Investigation on Sonchus erzincanicus Matthews (Asteraceae).

In this study, Sonchus erzincanicusMatthews (Asteraceae) collected from Erzincan (Turkey) has been investigated by its leaf and stem anatomical features, pollen grain characteristics and ecological features. It is an endemic perennial herbs growing in slightly basic with low organic content soil. Stem cortex seen transparently is composed of parenchyma cells. The leaves are bifacial and have stomata cells that are anomocytic. The pollen type of the species is trizonocolporate. All anatomical studies including transverse sections of the stems and leaves and surface section of leaves are illustrated for the firs time. [ABSTRACT FROM AUTHOR]