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Trichome micromorphology of the genus Stachys sect. Fragilicaulis subsect. Fragilis and its taxonomic implications
Plant Biosystems ( IF 1.6 ) Pub Date : 2020-09-01 , DOI: 10.1080/11263504.2020.1801874
Mehmet Cengiz Karaismailoğlu 1 , Özal Güner 2
Affiliation  

Abstract

The leaf, stem, calyx, and corolla indumentum of seven endemic taxa belonging to Stachys subsect. Fragiles, growing in Turkey, were micromorphologically and anatomically analyzed under scanning electron and light microscopes with the use of cluster analysis and Principal Component Analysis. We detected 10 trichome types on the leaf, seven trichome types on the stem and calyx, and eight trichome types on the corolla. Especially, the type and distribution of the trichomes on the calyx and corolla surfaces were quite different. The calyx and corolla had seven and eight trichome types, including glandular or non-glandular, in the examined taxa, respectively. The most common type observed was a short clavate glandular trichome; however, conical thin-walled unicellular hairs were specific for the studied taxa. No branched trichomes were observed. In the examined taxa, the indumentum indicated variations and some important similarities. The indumentum types have a high taxonomical value for the species of the genus. A key has been offered for the identification of the studied taxa based on the trichome characters, by comparing the key of classic taxonomic characters.



中文翻译:

水苏属的Trichome微观形态。脆弱类。脆弱类及其分类学意义

摘要

属于水属的七个地方性分类单元的叶,茎,花萼和花冠硬花序。脆片使用聚类分析和主成分分析法,在扫描电子显微镜和光学显微镜下对土耳其生长的刺槐进行了微观形态和解剖学分析。我们在叶子上检测到10种毛状体类型,在茎和花萼上检测到7种毛状体类型,在花冠上检测到8种毛状体类型。特别是,花萼和花冠表面上的毛状体的类型和分布是完全不同的。花萼和花冠在被检查的类群中分别有七种和八种毛状体,包括腺性或非腺性。观察到的最常见的类型是短的棒状腺毛。然而,圆锥形的薄壁单细胞毛是特定于所研究的类群的。没有观察到分支的毛状体。在检查的分类单元中,仪器显示出变异和一些重要的相似之处。乐器类型对于该属的物种具有很高的分类学价值。通过比较经典分类学特征的键,提供了一种用于基于毛状体特征识别所研究的分类单元的键。

更新日期:2020-09-01
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