Welcome to Bulletin of Botanical Research! Today is Share:

Bulletin of Botanical Research ›› 2009, Vol. 29 ›› Issue (6): 674-680.doi: 10.7525/j.issn.1673-5102.2009.06.006

Previous Articles     Next Articles

Bracts and bracteoles Morphology of Pleurospermum Hoffm. in Kun-Lun Mountains and Its Taxonomic Significance

FENG Ying;WU Yu-Hu;SHEN Guan-Mian   

  1. (1.Xinjiang Institute of Ecology and Geography,Chinese Academy of Sciences,Urumqi 830011) (2.Northwest Plateau Institute of Biology,Chinese Academy of Sciences,Xining 810001)
  • Received:1900-01-01 Revised:1900-01-01 Online:2009-11-20 Published:2009-11-20
  • Supported by:

Abstract: Bracts, rays, bracteoles and fruit ribs morphology of 10 species of Pleurospermum Hoffm growing in Kun-Lun Mountains were observed using a stereomicroscope, and a key to the species is provided. The results show that the species can be divided into three groups in terms of their morphology: (1)Bracts and bracteoles are all lanceolate; (2)Bracts and bracteoles are all leaflike, apex pinnatifid; (3)Bracteoles are different from bracts. So the shapes of Bracts and bracteoles provide new evidence for taxonomy. These properties can be regarded as the taxonomic bases among the species of Pleurospermum Hoffm.

Key words: Pleurospermum Hoffm., Bracts and bracteoles morphology, taxonomy

CLC Number: