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Bulletin of Botanical Research ›› 2016, Vol. 36 ›› Issue (5): 653-659.doi: 10.7525/j.issn.1673-5102.2016.05.004

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Reduction on Littledalea tibetica Based on the Generalized Morphological Characteristics

ZHOU Yong-Hui1,2,3,4, LIU Yu-Ping1,2,3,4, LÜ Ting1,2,3,4, ZHANG Xiao-Yu1,2,3,4, CHEN Zhi1,2,3,4, SU Xu1,2,3,4   

  1. 1. Key Laboratory of Medicinal Plant and Animal Resources in the Qinghai-Tibetan Plateau, Xining 810008;
    2. Key Laboratory of Physical Geography and Environmental Process in Qinghai Province, Xining 810008;
    3. Key Laboratory of Education Ministry of Environments and Resources in the Qinghai-Tibetan Plateau, Xining 810008;
    4. College of Geography and Life Science, Qinghai Normal University, Xining 810008
  • Received:2016-04-26 Online:2016-09-15 Published:2016-09-27
  • Supported by:
    The National Natural Science Foundation of China(31260052);The National Natural Science Foundation of Qinghai Province(2014-ZJ-947Q,2016-ZJ-937Q);The Key Laboratory of Medicinal Animal and Plant Resource of Qinghai-Tibetan Plateau of Qinghai Province(2015-Z-Y06);The Young and Middle-Aged Research Foundation of Qinghai Normal University(2015-19);The College Innovation Foundation of Qinghai Normal University(2015-12)

Abstract: We analyzed the differences among nearest related Littledalea tibetica, L.racemosa and L.przevalskyi in the genus Littledalea by morphological observation and anatomical analysis of leaf epidermises. There was very slight disparity between L.tibetica and L.racemosa in external morphology, the classification of the two species is very difficult, and the differences between L.tibetica and L.przevalskyi are distinct, the two taxa are two different species. Anatomically, the most features of L.tibetica are consistent with or similar to that of L.racemosa, while for L.przevalskyi, the discontinuity of characters between them is obviously present. Therefore, L.tibetica and L.racemosa should belong to the same species, and L.tibetica can be classified to synonymy of L.racemosa.

Key words: Poaceae, Littledalea, Littledalea tibetica, morphological character, morphology of leaf epidermis

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