河北中国种子植物特有属初步研究

Preliminary Studies of Hebei Chinese Endemic Genera of Seed Plant

河北植物区系自然分布中国种子植物特有属18属,含17种2变种,归13科.对河北种子植物特有属分析表明:河北种子植物特有属以残存的古特有属为主,温带性质显著,热带渊源明显;草本属(尤其多年生草本属)占显著优势,占总属数的61.1％,而木本属仅占27.8％.单种属和双种属占明显优势,占总属数的84,2％.中国特有属种无毛独根草(Orestitrophe rupifraga Bunge var.glabrescens W.T.Wang)、缘毛太行花(Taihangia rupestris Yu et Li vat.ciliata Yu et Li)(河北无原变种)和长裂太行菊(Opisthopappus longilobumShih)仅在河北分布.

18 Chinese endemic genera of seed plant are recorded in Hebei flora. They belong to 13 families and include 17 species, 2 varieties. The analysis of Chinese endemic genera showed Hebei flora demonstrates a temperate nature distinctly with ancient endemic genera. The character of tropical origin is also clear. Herbs, especially perennial herbs, prevail with the proportion of about 61.1% ,and only 27.8% are trees and shrubs. About 84.2% of endemic genera are monotypic genera and bitypic genera. Orestitrophe rupifraga Bunge var. glabrescens W. T. Wang, Taihangia rupestris Yu et Li var. ciliata Yu et Li and Opisthopappus longilobum Shih are only distributed in Hebei province.