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梁松筠 《中国科学院研究生院学报》1990,28(2):153-158
In addition, two new sections, Echinochlomorphae Y. L. Chang andThomsonianae Y. L. Chang, two new combinations, C. duriuscula subsp. rigescens(Franch.) S. Y. Liang et Y. C. Tang (=C. stenophylla var. rigescens Franch.) andC. rochebrunii Franch. Subsp. reptans (Franch.) S. Y. Liang et Y. C. Tang (=C.remotae L. var. reptans Franch.) are made, and C. stenophylloides V. Krecz. isreduced to C. duriuscula subsp. stenophylloides (V. Krecz.) S. Y. Liang et Y. C.Tang. 相似文献
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本文对我国苔草属二柱苔草亚属Subgen.Vignea作了系统排列,并提出以下几点的看法: 1.二柱苔草亚属是苔草属中比较自然的一个类群,我国有48种、7亚种和1变种,隶属于16个组。根据Takhtajan的世界植物区划,将它们分成4种成分,即:(1)环北方植物地区成分,占总数的20.4%;(2)东亚植物地区成分,占总数的55.5%。实际上,只有4个分类群出现于中国-喜马拉雅森林植物亚区,而其余的都均分布于中国-日本森林植物亚区,并且在这一亚区内有8个特有成分,占特有成分总数的61.5%;显然,中国二柱苔草亚属在中国-日本森林植物亚区内的分化较其他地区更为强烈;(3)伊朗—吐兰植物地区成分,占总数的16.7%;(4)印度支那植物地区成分和印度植物地区成分,占总数的7.4%。 2.高节苔草C.thomsonii和云雾苔草C.nubigena类群是Subgen.Vignea中较为原始的种类,它们为印度支那植物地区和印度植物地区成分。这样非但Subgen.Indocarex原始类群分布于东南亚和马来西亚,而Subgea.Vignea的原始类群也分布于东南亚,这也是对Nelmes提出Carex起源于印度-马来西亚地区的一个佐证。 相似文献
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戴伦凯 《中国科学院研究生院学报》1994,32(2):173-189
Sixteen new species and two new varieties of the genus Carex are described from China. 相似文献
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选择中国复序苔草亚属6组4亚组的代表植物14种,进行了叶片解剖学研究,观察了其横切面和表皮特征,证明上述特征在各类群之间存在差异,具有一定的系统学意义。这14种植物叶片的横切面和表皮都具有一些原始的性状,表明复序苔草亚属中的植物可能在苔草属中是较原始的。在所观察的植物中,Sect.Polystachyae植物叶片解剖学特征比较一致,说明此组的建立比较合理;而Sect.Indicae组已有明显分化,尤其是Carex scaposa C.B.Clarke和C.densifimbriata Tang et S.Y.Liang与其它植物明显不同,而且其外部形态特征在复序苔草亚属中也比较独特,因此赞成将它们及其近缘类群做为一个组而非亚组。 相似文献
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One new section and one new species of the genus Carex (Cyperaceae)are described from Anhui Province, China. i. e. Sect. Cyclostyliferae and Carexshuchengensis S. W. Su et Q. Zhang. 相似文献
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刘君哲 《中国科学院研究生院学报》1989,27(4):298-300
One new species and one new variety of genus Plantago are describecdfrom China. They are P. densiflora J. Z. Liu and P. arachnoidea var. lorata J.Z. Liu. 相似文献
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石铸 《中国科学院研究生院学报》1991,29(5):394-417
本文是对中国-喜马拉雅地区的原莴苣属植物提出的分类订正。是笔者前一篇文章《莴苣属订正及亚洲大陆菊科植物二新属》的续篇。文中建立了两个新属,即毛鳞菊属Chaetoseris Shih和细莴苣属Stenoseris Shih;文末及文中提供了本文所涉及的一些属种的分属和分种检索表。 相似文献
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摘要描述及图解了浙江薹草属Carex 5新种和1新变种,它们是:灰帽薹草组sect. Mitratae Kükenth.的天目山薹草Carex tianmushanica C. Z. Zheng & X. F. Jin和拟三穗薹草C. pseudotristachya X. F. Jin & C. Z. Zheng;匏囊薹草组sect. Lageniformes (Ohwi) Nelmes的密毛薹草C. densipilosa C. Z. Zheng & X. F. Jin;菱形果薹草组sect. Rhomboidales Kükenth.的浙南薹草C. austrozhejiangensis C. Z. Zheng & X. F. Jin和朝芳薹草C. chaofangii C. Z. Zheng & X. F. Jin;疏花薹草组sect. Laxiflorae Kunth的无芒长嘴薹草C. longerostrata C. A. Mey. var. exaristata X. F. Jin & C. Z. Zheng。 相似文献
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eterachopsis was proposed by the senior author as an independent genus ofthe family Aspleniaceae in 1940 with 2 species. Since then much study on its morpho-logy, anatomy, gametophyte and palynology has been carried out by Nayar, Bir, Chan-dra & Nayar and Chang et al., and they are of the opinion that the genus like Ceterach, is a comparatively primitive element in the family Aspleniaceae. The queer zigzag pa-tern of cutting of lanceolate fronds appears extraordinary in the family Aspleniaceae, and also suggests its antiquity in evolution. So far only 3 species (C. dalhousiae, C.paucivenosa and C. magnifica) are recognized, the former from W. Himalayas, alsoknown from Africa, while the latter two from W. S. China (Yunnan). However, inthe past forty years the Chinese botanists have discovered 2 more species as new in N.W. Yunnan, thus bringing the total known species of the genus up to 5. The presentpaper is a brief summary on the genus Ceterachopsis, which will be published in detailin the Flora Sinica vol. 4. Pteridologists are also divided in their views regarding the generic status of Cete-rachopsis with 5 well-defined species in Yunnan and the East Himalayas. We preferto mintain it as a genus separate from Asplenium on account of its distinct morpholo-gical features. It is to be hoped that more species may come to light in the mountainsin N. W. Yunnan through further exploration now under way. 相似文献
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乌蒙杓兰及其近亲种 总被引:1,自引:0,他引:1
陈心启 《中国科学院研究生院学报》1985,23(5):369-375
In addition to describing a new species, Cypripedium wumengense, as wellas a new variety, C. bardolphianum var. zhongdianense, nomenclatural and taxonomicnotes are made on its allies and the division to which they belong. They are ltrge]yfound in the Hengduan Mountains in southwestern China, characterized by the absenceof bract, havirg lip more or less covered with small wart-like outgrowths, and that asthe capsule matures the scape becomes much elongated. Six species of this group havehitherto been reported, of which, however, C. ebracteatum and C. nutans are regardedhere as conspecific with C. fargesii and C. bardolphianum respectively. Thus, includingthe new taxa described here, it composes five species and one variety: C. bardolphianumW. W. Sm. et Farrer (var. bardolphianum and var. zhongdianense S. C. Chen), C. mic-ranthum Franch., C. fargesii Franch., C. margaritaceum Franch. and C. wumengenseS. C. Chen. They are all grouped here into the same section, Sect. Trigonopedium(Franch.) Pfitz., the oldest legitimate name of this group in the rank of section. 相似文献
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