| 摘要: |
| 描述了在中国广西发现的楼梯草属五新种:小果楼梯草Elatostema microcarpum W.T.Wang & Y.G.Wei在体态方面与荔波楼梯草E.liboense W.T.Wang极为相似,但茎较低矮,不具软鳞片,叶上面无毛,钟乳体较小而可区别。圆序楼梯草Elatostema gyrocephalum W.T.Wang & Y.G.Wei在体态上与浅齿楼梯草E.crenatum W.T.Wang相似,但叶两面均有糙伏毛,侧脉较少,4-6对,钟乳体较小,长约0.1 mm而不同。对序楼梯草Elatostema binatum W.T.Wang & Y.G.Wei在亲缘关系方面与深绿楼梯草E.atroviride W.T.Wang相近,但茎和叶无毛,雄花序托较小,近方形,长度及宽度约6.5 mm,小苞片较小,长约1.5 mm,无毛,可以区别。河池楼梯草Elatostema hechiense W.T.Wang & Y.G.Wei似华南楼梯草E.balansae Gagnep.但叶的渐尖头全缘,钟乳体较小,长0.1-0.15 mm,雌花序苞片顶端无角状突起,可以区别。环江楼梯草Elatostema huanjiangense W.T.Wang & Y.G.Wei可能与樟叶楼梯草Elatostema petelotii Gangnep.有亲缘关系,但后者的叶全缘,钟乳体较大,长0.3-0.7 mm,侧脉在狭侧3条,在宽侧4条,但后者的叶全缘,钟乳体较大,长0.3-0.7 mm,侧脉在狭侧3条,在宽侧4条,雌花序常有长花序梗,而与本种相区别。 |
| 关键词: 楼梯草属 小果楼梯草 圆序楼梯草 对序楼梯草 河池楼梯草 环江楼梯草 荨麻科 新种 |
| DOI： |
| 分类号:Q949.737.5 |
| 基金项目: |
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| Five new species of Elatostema J.R.et G. Forst.(Urticaceae)from Guangxi, China |
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WANG Wen-Tsai1, WEI Yi-Gang2
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1.State Key Laboratory of Systematic and Evolutionary Botany, Institute of Botany, Chinese Academy of
Sciences, Beijing 100093, China;2.Guangxi Institute of Botany, Guangxi Zhuangzu Autonomous
Region and the Chinese Academy of Sciences, Guilin 541006, China
1.State Key Laboratory of Systematic and Evolutionary Botany, Institute of Botany, Chinese Academy of
Sciences, Beijing 100093, China; 2.Guangxi Institute of Botany, Guangxi Zhuangzu Autonomous
Region and the Chinese Academy of Sciences, Guilin 541006, China
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| Abstract: |
| 1.State Key Laboratory of Systematic and Evolutionary Botany, Institute of Botany, Chinese Academy of
Sciences, Beijing 100093, China; 2.Guangxi Institute of Botany, Guangxi Zhuangzu Autonomous
Region and the Chinese Academy of Sciences, Guilin 541006, China |
| Key words: Elatostema Elatostema microcarpa Elatostema gyrocephala Elatostema binatum Elatostema hechiense Elatostema huanjiangense Urticaceae new species |
