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(菊科,),中国贵州省的一个新物种。

 (Asteraceae, ), a new species from Guizhou Province, China.

作者信息

Li Zhi, Wu Jiang-Hua, Wang Yu-Jie, Zhou Qi-Xian, An Ming-Tai

机构信息

College of Forestry, Guizhou University, Guiyang 550025, China Guizhou University Guiyang China.

Arts Institute, Guizhou Education University, Guiyang 550018, China Guizhou Education University Guiyang China.

出版信息

PhytoKeys. 2025 Jun 10;257:179-190. doi: 10.3897/phytokeys.257.145670. eCollection 2025.

Abstract

Z.Li (Asteraceae, Astereae), a new species from Guizhou, China, is described and illustrated here. Morphological and molecular analyses based on nuclear ribosomal DNA internal transcribed spacer (nrDNA ITS) confirm its distinct status. The species is morphologically similar to , but differs by its falcate, adaxially shiny upper leaves 3.5-5.0 × 0.8-2.0 cm with long-acuminate to caudate apices (versus oblong-lanceolate to lanceolate leaves in ); 5-seriate, abaxially red-purple phyllaries (versus 3-5-seriate with purple-tipped phyllaries); and fewer florets (7-12 ray florets and 5-9 disc florets versus 9-14 ray florets and 10-18 disc florets). Phylogenetic analysis strongly supports its distinctness, with four samples forming a monophyletic clade (PP = 1.00, BS = 100%) nested within .

摘要

本文描述并图示了来自中国贵州的菊科紫菀族新物种Z.Li。基于核糖体DNA内转录间隔区(nrDNA ITS)的形态学和分子分析证实了其独特地位。该物种在形态上与[某物种]相似,但不同之处在于其镰刀形、正面有光泽的上部叶片长3.5 - 5.0×0.8 - 2.0厘米,先端长渐尖至尾状(与之相比,[某物种]的叶片为长圆状披针形至披针形);具5列、背面红紫色的总苞片(与之相比,[某物种]具3 - 5列且总苞片先端紫色);以及小花较少(7 - 12朵舌状小花和5 - 9朵管状小花,与之相比,[某物种]为9 - 14朵舌状小花和10 - 18朵管状小花)。系统发育分析有力地支持了其独特性,四个样本形成一个单系分支(PP = 1.00,BS = 100%),嵌套在[某分类群]内。

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