| 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 |
| Fund project: |
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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
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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 |
