| 星叶草属2隙节及2裂叶及其系统学意义 |
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| 引用本文： | 任毅 胡正海. 星叶草属2隙节及2裂叶及其系统学意义[J]. 西北植物学报, 1998, 18(4): 566-569 |
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| 作者姓名： | 任毅 胡正海 |
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| 作者单位： | 西北大学生物系 |
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| 摘 要： | 报道了存在于星叶草属植物中与单隙节共存的２隙节及与不分裂叶共存的２裂叶。通过分析后认为，这两个现象在该属植物中的出现并不是异常的。
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| 关 键 词： | 星叶草属 2隙节 裂叶 系统学意义 |
THE DISCOVERY OF THE BILACUNAR NODES AND BILOBED LEAVES IN CIRCAEASTER AND THEIR SISTEMATIC SIGNIFICANCE |
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| Ren Yi and Hu Zhenghai. THE DISCOVERY OF THE BILACUNAR NODES AND BILOBED LEAVES IN CIRCAEASTER AND THEIR SISTEMATIC SIGNIFICANCE[J]. Acta Botanica Boreali-Occidentalia Sinica, 1998, 18(4): 566-569 |
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| Authors: | Ren Yi and Hu Zhenghai |
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| Abstract: | Two examples of bilacunar nodes and 21 examples of bilobed leaves from 500 individuals and 3500 leaves of Circaeaster was reported in this paper.The bilacunar nodes we found are similar to the cotyledonary nodes of Circaeaster .The different node structure of Circaeaster is similar to that of some genera and species of Ranunculaceae.These similarities shown that the bilacunar nodes of Circaeaster is not abnormal.13 of the 21 bilobed leaves are cataphylls,and 19% of the 21 bilobed leaves is with anastomousis in their open dichotomous venation.This rate is obvious higher than that of normal leaves.The bilobed leaves in Circaeaster is also not abnormal and probably be the reversion of the ancestor situation. |
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| Keywords: | Circaeaster bilacunar node bilobed leaf systematic significance |
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