Plant Diversity ›› 2013, Vol. 35 ›› Issue (3): 253-264.DOI: 10.7677/ynzwyj201313079

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Achene Morphological Features of Saussurea subg. Eriocoryne (Asteraceae) and Its Taxonomical Significance*

XU  Bing-Jiang-1, ZHENG  Chao-Han-1、2, TONG  Yi-Hua-1、2, ZHOU  Wei-3, JIA  Nian-He-1   

  1. 1 Key Laboratory of Plant Resources Conservation and Sustainable Utilization, South China Botanical Garden, Chinese Academy
    of Sciences, Guangzhou 510650, China; 2 University of Chinese Academy of Sciences, Beijing 100049, China;
    3 Institute of Botany, Jiangsu Province and Chinese Academy of Sciences, Nanjing 210014, China
  • Received:2013-04-07 Online:2013-05-25 Published:2013-04-24
  • Supported by:

    科技部科技基础性工作专项重点项目 (2007FY110100)、中国科学院华南植物园科研启动项目 (201301)、国家自然科学基金项目 (30499340, 39899400)、中国科学院知识创新工程项目 (KSCX-SW-122)


The achene morphological features of 28 species of Saussurea subg. Eriocoryne and some close related taxa were observed under scanning electronic microscope. The shape, size, colour and ornamentation of the achenes of Saussurea subg. Eriocoryne are stable at the species level. The apex of the pericarp of S.stella and S.thoroldii are elongated into an irregularly dentate crown, which made them different from the other species in Saussurea subg. Eriocoryne. The ornamentation of the surface sculpture of Saussurea subg. Eriocoryne is striate, and the striate ornamentation can be divided into 3 subtypes: no diaphragm, diaphragmatic, transitional between diaphragmatic and no diaphragm, which is associated with the sectional division in Saussurea subg. Eriocoryne. The subtypes of the ormantation also revealed some morphological evolutionary trends at the section level. The ornamentation of the surface sculpture of the rest species observed are striate, reticulate, areolate and compound. The striate surface sculpture of the species observed in Serratula, Arctium and Carduus showed the close relationship between them and Saussurea subg. Eriocoryne.

Key words: Eriocoryne, Achene morphology, Taxonomic implications

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