Abstract

The identification of species based on anatomical characters is valuable to investigate their taxonomic status, phylogeny and understand their autoecology. The current study analysed the stem and leaf properties of 20 species of the subgenus Cyanus (Mill.) Hayek in Turkey. The Cyanus species exhibited xeromorphic anatomical features, such as tight palisade parenchyma and induced spongy parenchyma, which indicated adaptations to the arid soil and a forest ecosystem in which they occurred, as well as to high light intensity and precipitation. Anatomical features such as the midrib shape and number of vascularization patterns differed among the species. Similar anatomical characters were analysed for the investigated species. These properties can provide an important database for future studies including the phylogeny within the subgenus Cyanus. Bangladesh J. Plant Taxon. 28(2): 295-309, 2021 (December)

Highlights

  • The group Cyanus (Mill.) Hayek of the family Asteraceae was first described as a genus (Miller, 1754), and later reduced to a section of the genus Centaurea L., a position that was accepted by some taxonomists (Candolle, 1838; Bentham, 1873; Stefanov, and Gheorghiev, 1931; Wagenitz, 1975)

  • Some botanists recognized Cyanus as a separate genus based on morphological evidence (Soják, 1972; Greuter, 2003, 2008; Hellwig, 2004; Wagenitz, 2006; Olšavská et al, 2009, 2011; Stoyanov, 2016; Negaresh, 2018)

  • In Turkey, the subgenus Cyanus was rearranged as a subgenus (Ertuğrul et al, 2018) as a result of molecular studies (Susanna and Garcia-Jacas, 2009; Hilpold et al, 2014a, b)

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Summary

Introduction

The group Cyanus (Mill.) Hayek of the family Asteraceae was first described as a genus (Miller, 1754), and later reduced to a section of the genus Centaurea L., a position that was accepted by some taxonomists (Candolle, 1838; Bentham, 1873; Stefanov, and Gheorghiev, 1931; Wagenitz, 1975). By some other taxonomists, it was recognized as a subgenus of Centaurea based on molecular evidence (Susanna and Garcia-Jacas, 2009; Hilpold et al, 2014a, 2014b). Some botanists recognized Cyanus as a separate genus based on morphological evidence (Soják, 1972; Greuter, 2003, 2008; Hellwig, 2004; Wagenitz, 2006; Olšavská et al, 2009, 2011; Stoyanov, 2016; Negaresh, 2018). In Turkey, the subgenus Cyanus was rearranged as a subgenus (Ertuğrul et al, 2018) as a result of molecular studies (Susanna and Garcia-Jacas, 2009; Hilpold et al, 2014a, b). Examining subgenus Cyanus species to identify their anatomical characteristics, clarifying the systematic value of their anatomical characteristics by way of numerical analysis, and contributing to the systematic position of the examined taxa were the main objectives

Materials and Methods
Trabzon
Ardahan
Isparta
Manisa
Results and Discussion
Full Text
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