Diplotaenia bingolensis (Apiaceae), new species from east Anatolia, Turkey

The new species of Diplotaenia bingolensis M. Öztürk, A. Duran and Behçet (Apiaceae) is described from the eastern part of Turkey. D. bingolensis grows on the steppe, in the Şam Mountain (B8 Bingöl province). It is an endemic confined to east Anatolia, and it is related with D. turcica. The new species is distinct from a closely allied species D. turcica by stem tall, ray number, peduncle long, leaves and mericarp features. The photos of the new species are provided. In addition, pollen characteristics and mericarp surface features are examined by SEM. A special attention is also given on its ecology, conservation status and observations on the population are discussed. 162 ISSR bands scored and ITS1-5.8S-ITS2 nrDNA region sequences were used to generate the dendrograms that revealed the phylogenetic relationships of the taxa. Three taxa of the genus Diplotaenia Boiss. and the out-group taxa belonging to the closest genera Johrenia DC., Dichoropetalum Fenzl. and Cymbocarpum DC. Ex C.A.Mey which are placed in Selineae, Tordylieae and Bupleureae tribes, respectively, were used to molecular analyses in order to characterize their phylogenetic relationships. The geographical distributions of all Diplotaenia species in the world are mapped.