Anatomical and morphological characteristics of endemic $Barbarea auriculata$ taxa (var. $auriculata$ and var. $paludosa$)

The aim of this study was to determine the anatomical and morphological characteristics of two endemic taxa of $Barbarea auriculata$ naturally growing in Türkiye. In morphological studies, characteristics of the vegetative (root, stem, and leaf) and generative (flower, fruit, and seed) structures of both taxa were determined and detailed descriptions were given. Furthermore, according to the morphological data obtained, the identification key was revised again. In anatomical analyses, cross-sections were taken manually from the roots, stems, and leaves of the two taxa. The sections were made into permanent preparations and examined under a binocular light microscope. Sections were then photographed with an integrated camera system. The morphological and anatomical characteristics of both species are discussed in detail according to their similarities and differences.