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中国科学院大学学报 ›› 2000, Vol. 38 ›› Issue (6): 551-556.

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云南西北部毛茛属一新种——文采毛茛及其核型

杨亲二   

  • 收稿日期:1900-01-01 修回日期:1900-01-01 发布日期:2000-11-10
  • 通讯作者: 杨亲二

Ranunculus wangianus Q. E. Yang, a new species from NW Yunnan, China and its karyotype

YANG Qin-Er   

  • Received:1900-01-01 Revised:1900-01-01 Published:2000-11-10
  • Contact: YANG Qin-Er

摘要:

描述了云南西北部毛茛属一新种——文采毛茛R.wangianus Q.E.Yang。该种与云南毛茛 Ranunculus yunnanensis Franch.十分相似,但在叶的质地和形状以及染色体数目方面明显不同。与扇叶毛茛R.felixii Lévl.也相似,但后者为四倍体,须根基部肉质肥厚成纺锤形,基生叶通常1枚,叶片肾状圆形至扇形而易于区别。首次报道了云南毛茛、扇叶毛茛和文采毛茛的染色体数目和核型。

关键词: 文采毛茛, 新种, 染色体数目, 核型

Abstract:

 Ranunculus wangianus Q. E. Yang is described as new. This species, a hexaploid with
2n = 6x = 48, is different from its closet ally, R. yunnanensis, a diploid with 2n = 2x = 16, in the
characters of foliage. It is also somewhat similar to R. felixii Lévl., but the latter is a tetraploid
with 2n = 4x = 32, usually with only one basal leaf and the roots are thickened from base and
fleshy.

Key words: Ranunculus wangianus Q. E. Yang, New species, Chromosome number, Karyotype