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    CONTRIBUTION TO THE SYSTEMATIC KNOWLEDGE OF ENDEMIC AUBRIETA PINARDII BOISS. (BRASSICACEAE) FROM TURKEY
    (Bangladesh Assoc Plant Taxonomists, 2020) Sirin, Emrah; Karaismailoglu, Mehmet Cengiz
    The aim of this study was to document the taxonomical, morphological, anatomical, palynological and cytological characters, and geographical distribution of endemic Aubrieta pinardii Boiss. (Brassicaceae) from Turkey. The description of the taxon was revised as a consequence of comprehensive assessments of many specimens. The surface pictures belonging to seed and pollen of the taxon were obtained by Scanning Electron Microscope. The seed surface ornamentation was rugose. The pollen was radially and isopolar and prolate in forms, with polar axes of 19.52 +/- 0.29 mu m and equatorial axes of 13.04 +/- 0.22 mu m, with oval outlines in the equatorial axes, and elliptical in the polar axes. They were three-colpate and colpus sizes varied between 12.98 mu m and 13.29 mu m in length, and between 1.33 and 2.09 mu m in width. Also, the anatomical structures of the root, stem and leaf of species were studied. In cytological studies, the chromosome number of species was found as 2n = 16 (x =8). This was the first work including taxonomical, morphological (macro and micro), anatomical and cytological data of endemic Aubrieta pinardii.
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    NOTES ON Arabis kaynakiae Daskin (Brassicaceae), A CRITICALLY ENDANGERED SPECIES ENDEMIC TO TURKEY
    (Trakya Univ Balkan Yerlesesi Enstituler Binasi, 2020) Karaismailoglu, Mehmet Cengiz; Sirin, Emrah
    This study reports on the evaluation of the taxonomical, macro- and micro morphological, anatomical, palynological and cytological features, together with the geographical distribution of Arabis kaynakiae Daskin (Brassicaceae), a Critically Endangered (CR) species from Turkey. The description of the species was updated following detailed studies on new specimens found in Karaman/Ermenek. The surface microphotographs of seeds and pollen were obtained using Scanning Electron Microscopy. The seed surface ornamentation is papillate and its margins minutely tuberculate. Pollen grains appear tricolpate, isopolar, subprolate in shape, with polar axis of 19.62 +/- 0.33 mu m and equatorial axis of 12.94 +/- 0.17 mu m. The exine thickness ranges from 1.68 to 1.87 mu m; however, the intine thickness ranges from 0.21 to 0.39 mu m. Arabis kaynakiae has pollen of coarse reticulate type surface ornamentation with slightly undulated muri. Anatomical characters of root, stem and leaf of the species were also given. The cytological investigations revealed that A. kaynakiae is diploid with 2n = 2x = 16 chromosomes. The discovered population of A. kaynakiae increased the known distribution range of the species in Turkey, and an updated evaluation of the species considering the IUCN criteria was provided.