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Plant Systematics and Evolution

, Volume 299, Issue 10, pp 1839–1847 | Cite as

A new Onosma (Boraginaceae) species from Central Anatolia, Turkey

  • Onur Koyuncu
  • Ö. Koray Yaylacı
  • Kurtuluş Özgişi
  • Okan Sezer
  • Derviş Öztürk
Original Article

Abstract

Onosma atila-ocakii sp. nova [Boraginaceae, Sect. Asterotricha (Boiss.) Gürke] is described and illustrated as a new species. It grows in a steppe on magnesite rocks in Eskişehir province (Central Anatolia, Turkey). Its description, photographs, and an identification key including related species (O. roussaei DC. and O. aucheriana DC.) are given. Diagnostic morphological and palynological characters of closely related species are compared and discussed. The characteristic features of indumentum and pollen structure are studied using a light microscope. The new species distinctly differs from related species because of its setose and adpressed retrorse–pilose indumentum, 2–3 rows of setules on foliar tubercles, 10–14 mm white petals and 2.1–2.6 × 1.7–2 mm dark brown nutlets. The International Union for Conservation of Nature threat category and observations on the ecology of the populations are noted. The distribution map of this new species and closely related species in Turkey is presented.

Keywords

Biodiversity Boraginaceae Onosma Taxonomy Nomenclature 

Notes

Acknowledgments

We would like to thank Dr. Zafer Türkmen in Giresun University Department of Biology for supports.

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Copyright information

© Springer-Verlag Wien 2013

Authors and Affiliations

  • Onur Koyuncu
    • 1
  • Ö. Koray Yaylacı
    • 1
  • Kurtuluş Özgişi
    • 1
  • Okan Sezer
    • 1
  • Derviş Öztürk
    • 1
  1. 1.Biology Department, Art and Science FacultyEskişehir Osmangazi UniversityEskişehirTurkey

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