J Syst Evol ›› 1983, Vol. 21 ›› Issue (1): 102-104.

• Research Articles • Previous Articles     Next Articles

Cystopteris Dickieana Sim in China

Wang Zhong-Ren   

  1. (Institute of Botany, Academea Sinica)
  • Published:1983-02-18

Abstract: The spores of all specimens of Cystopteris in the Herbarium of the Institute of Botany, Academea Sinica have been examined under light microscope. The result of the survey shows for the first time that the distribution of Cystopteris dickieana Sim with non-spiny spores is also quite wide-spread in China, including provinces Xinjiang, Xizang, Qinghai, Gansu, Sichuan, Hebei in northwestern China and Tibetan plateau. The range of altitude for this species varies from 1800 to 5400(5600) m, but C. fragilis (L.) Bernh. from 210 to 4600 m. The differences in the altitudinal distribution range seem to suggest that C. dickieana is more tolerant of cold conditions than C. fragilis. There are also variations in size and ornamentation of the spores in each of the two species. Their ploidy and relationships await futher cytogenetical study from livingmaterials.