Abstract

Here we describe Centaurea hekimhanensis, a new species found in Hekimhan (Turkey, Malatya Province). This Centaurea grows on the stony-gravel mountain slopes of Yamada? and is morphologically similar to C. reuteriana, C. bourgaei, and C. pichleri in terms of their flowering lateral stem at the base of the rosette, but differs regarding the shape of the stem and rosette leaves, and the size of the rosette leaves and median appendages; the achene ornamentation is irregularly sulcate. The chromosome number of the new species is 2n = 20.

Highlights

  • The Cyanus Miller group from the Asteraceae family was first described as a genus (Miller 1754), and later reduced to a section within the genus Centaurea L., a position that was accepted by some taxonomists

  • The present study focuses on the detailed karyological, morphological and micromorphological features used to characterize a new species in Centaurea subgenus Cyanus (Wagenitz 1975; Şirin et al 2019b, 2020)

  • In the first step of our work, we examined the morphology of 60 samples belonging to C. hekimhanensis and its relatives (C. bourgaei Boiss., C. pichleri Boiss., C. reuteriana Boiss. var. phrygia Bornm. and C. reuteriana Boiss. var. reuteriana)

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Summary

Introduction

The Cyanus Miller group from the Asteraceae family was first described as a genus (Miller 1754), and later reduced to a section within the genus Centaurea L., a position that was accepted by some taxonomists (de Candolle 1838; Bentham 1873; Boissier 1875; Hoffmann 1893; Stefanov & Gheorghiev 1931; Dittrich 1968; Wagenitz 1975). The present study focuses on the detailed karyological, morphological and micromorphological features used to characterize a new species in Centaurea subgenus Cyanus (Wagenitz 1975; Şirin et al 2019b, 2020). The material from the new species was compared with the herbarium collections of Centaurea in the ANK, GAZI, ISTF, ISTE, 14 |

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