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10 December 2009 A New Species of Cyanus (Asteraceae, Centaureinae) from Southeastern Bulgaria
Svetlana Bancheva, Stoyan Stoyanov
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A new species of Cyanus Miller, C. diospolitanus Bancheva & S. Stoyanov (Asteraceae, Centaureinae), from Tundzha hilly country floristic region in Elhovo municipality, southeastern Bulgaria, is described and illustrated. It belongs to Cyanus sect. Napuliferi (Stefanoff & T. Georgiev) Bancheva & Raimondo, and taxonomically its closest relative is C. pseudoaxillaris (Stefanoff & T. Georgiev) Holub, a rare local endemic for the Thracian Plain, Bulgaria. The new species is currently known from four localities in the Derventski Hills (Yambol Province), growing at the periphery of dry, stony meadows in thermophilous oak forests and brushwood. The chromosome number is 2n  =  22, and SEM analysis of the pollen grains is described and illustrated.

Svetlana Bancheva and Stoyan Stoyanov "A New Species of Cyanus (Asteraceae, Centaureinae) from Southeastern Bulgaria," Novon: A Journal for Botanical Nomenclature 19(4), 421-425, (10 December 2009).
Published: 10 December 2009
IUCN Red List
sect. Napuliferi
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