Biodiv Sci ›› 2012, Vol. 20 ›› Issue (6): 769-773.  DOI: 10.3724/SP.J.1003.2012.05016

Special Issue: 青藏高原生物多样性与生态安全

• Bioinventory • Previous Articles     Next Articles

An evaluation of the endangerment status of Sinochasea trigyna (Poac- eae) endemic to the Qinghai-Tibet Plateau

Weiwei Li1,2, Hui Zhang2, Lina Zhao2, Ying Bao1,*(), Wenli Chen2,*()   

  1. 1 College of Life Sciences, Qufu Normal University, Qufu, Shandong 273165
    2 State Key Laboratory of Systematic and Evolutionary Botany, Institute of Botany, Chinese Academy of Sciences, Beijing 100093
  • Online:2012-11-20 Published:2013-01-04
  • Contact: Ying Bao,Wenli Chen


Sinochasea trigyna Keng (Family Poaceae) is endemic to the Qinghai-Tibet Plateau, and is listed as a second class national protected wild plant. The data about this monotypic genus is very scanty since its material difficult to acquire. According to the criterion of IUCN, the endangered level of S. trigyna is evaluated as VU B2ab(iii) based on the data from field investigations, herbarium records and the published literature. In this paper, we also reported the chromosome number (i.e. 2n = 22) and the type microchromosome of S. trigyna, which are both novel findings.

Key words: Qinghai-Tibet Plateau, Sinochasea trigyna, cytology, endangered