Anatomy of Carlina corymbosa L., Carthamus dentatus Vahl. and Picnomon acarna (L.) Cass. (Asteraceae)

Species of Carlina corymbosa L.,Carthamus dentatus Vahl. and Picnomon acarna (L.) Cass. are belonging to Asteraceae family. The purpose the study is determine anatomical structures these species in same tribe compare features. Samples root, stem leaf e-ach were collected, fixed examined using a light micros-cope. In addition, some features measured. Secondary growth was observed root cross section each species. Secretory ducts determined all While pith filled with xylem elements C. C .dentatus, P. consists different shaped parenchyma cells. Periderm All contain bicollateral vascular bundles stem. species, glandular non-glandular trichomes on section, surface adaxial abaxial epidermis. has dorsiventral mesophyll, unifacial mesophyll other There bundle whereas collateral identified C.dentatus P.acarna. Also, have only one midrib but P.acarna three bundles.