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Bulletin of Botanical Research ›› 2008, Vol. 28 ›› Issue (1): 38-42.doi: 10.7525/j.issn.1673-5102.2008.01.009

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Micromorphological Features of Achene Surfaces of 16 Species Of Subgen Saussurea in the Eastern of the Qinghai-Tibet Plateau

WANG Yi-Feng;*;WANG Jian-Hong;SHI Hai-Yan;GAO Hong-Yan   

  1. 1.College of Life Science, Northwest Normal University, Lanzhou 730070 2.Key Laboratory of Arid Agroecology of Lanzhou University, the Ministry of National Education, Lanzhou 730000
  • Received:1900-01-01 Revised:1900-01-01 Online:2008-01-20 Published:2008-01-20
  • Contact: WANG Yi-Feng
  • Supported by:

Abstract: Micromorphological characteristics of achene surfaces were studied in 16 species belonging to 4 sections of Subgen Saussurea in Lipsh by the scanning electron microscope. These species were obtained from the eastern of the Qinghai-Tibetan plateau fringe We got the results as follow, (1) According to micromorphological characteristics, the achene surface features can be divided into three types, striate ornamentation, septate striate ornamentation, and reticulate ornamentation. (2) The achene surface features were constant in infraspecific. At the same time, achene surface features of interspecies were similar in same section and distinctive in different ones. Therefore, it seemed to be useful to use micromorphological characteristics in Subgne Saussurea taxonomy both at species and sectional level.

Key words: Qinghai-Tibetan plateau, Subgen Saussurea, achenes surface features, classification

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