| 中国滇西天南星科一新种——保山犁头尖 |
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| 引用本文： | 刀志灵,陈绍田,纪运恒,李恒.中国滇西天南星科一新种——保山犁头尖[J].植物分类学报,2007,45(2):234-238. |
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| 作者姓名： | 刀志灵 陈绍田 纪运恒 李恒 |
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| 作者单位： | 中国科学院昆明植物研究所,昆明650204 |
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| 基金项目： | Supported by the National Science Foundation of U.S.A., Grant No. DEB-0103795, and The Ministry of Science and Technology of the People's Republic of China, Grant No. 2001DEA10009. |
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| 摘 要： | 描述了天南星科Araceae南星族Areae犁头尖属Tiphonium Schoa一新种——保山犁头尖Typhonium baoshanense Z.L.Dao ＆ H.Li，它的叶形和佛焰苞形态与犁头尖T.blumei Nicolson ＆ Sivadasan相似，但附属器下部，雄花序之上，有1-2轮不育雄花（退化雄蕊），雌花序圆锥形，附属器基部截形和佛焰焰苞檐部狭窄而易于区别。同域分布的犁头尖染色体数目为2n=52，本种染色体数目为2n=10，为天南星科的最低染色体基数。
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| 关 键 词： | 犁头尖属 保山犁头尖 天南星科 新种 云南 中国 |
| 修稿时间： | 09 8 2005 12:00AM |
Typhonium baoshanense Z. L. Dao & H. Li, a new species of Araceae from western Yunnan, China |
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| DAO Zhi-Ling,CHEN Shao-Tian,JI Yun-Heng,LI Heng.Typhonium baoshanense Z. L. Dao & H. Li, a new species of Araceae from western Yunnan, China[J].Acta Phytotaxonomica Sinica,2007,45(2):234-238. |
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| Authors: | DAO Zhi-Ling CHEN Shao-Tian JI Yun-Heng LI Heng |
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| Institution: | Kunming Institute of Botuny, the Chinese Academy of Sciences, Kunming 650204, China |
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| Abstract: | Typhonium baoshanense Z. L. Dao & H. Li (Araceae: Areae), a new species from western Yunnan, China, is described and illustrated. This species differs mainly from other species of Typhonium by the presence of one to two rings of sterile male flowers above the fertile male flowers, and from T. blumei Nicolson & Sivadasan by a conic female part of the spadix, the appendix not being truncate at its base, and by the angustate limb of the spathe. The chromosome number of Typhonium blumei, which occurs in same area, is 2n=52, while the chromosome number of the new species is 2n=10. The chromosome number of the new species is the lowest in the family Araceae. |
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| Keywords: | Typhonium Typhonium baoshanense Z L Dao & H Li Araceae new species Yunnan China |
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