中国石斛属一新种     

金效华  张玉武  肖丽萍 《中国科学院研究生院学报》2001,39(3):269-271

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桂西北喀斯特地区珍稀兰科植物     

覃勇荣 《河池学院学报》2014,(2):F0002-F0002

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武夷山自然保护区兰科植物及区系特点     

张玉  ;李灵  ;郭进辉  ;杨际信 《九江师专学报》2008,(6):61-63

武夷山自然保护区有兰科植物约39属82种,以热带属为主体、热带亚洲属分布为核心,以地生兰为优势,区系分布以热带属为主有向温带过渡的趋势。种的分布以热带亚洲至热带大洋洲分布最多,属种的地理成分多样,属内种贫乏。  相似文献   

暖地杓兰——与碗兰属有密切关系的新种     

陈心启  郎楷永 《中国科学院研究生院学报》1986,24(4):317-322

Cypripedium subtropicum S.  C. Chen et K. Y. Lang is a phytogeography- cally significant new species with its habit, inflorescence and column very similar to those of Selenipedilum of tropical America.  It is found in Mêdog of southeastern Xi- zang, China.  Its slender leafy stem bears at the summit a many-flowered raceme, am- ounting to 1.5 m in height. Although its ovary is unilocular—this is the reason why we place it in Cypripedium, the column characters resemble those of Selenipedilum. For example, the staminode is rather small and its long stalk is very similar in texture and color to the filament of the fertile stamens. Obviously, it is a primitive new species re- lated to Selenipedilum based on the similarities mentioned above.       In the subfamily Cypripedioideae, as generally recognized, Selenipedilum is  the most primitive genus, from which or whose allies Cypripedium is derived.  Of phyto- geographical significance is the fact that Selenipedilum occurs in Central America and northern South America, while a cypripedium akin to it is discontinuously distributed in subtropical Asia.  This suggests that Selenipedilum or Selenipedilum-like  form be once continually distributed in North America and eastern Asia when the climate there was warmer, as it is in the subtropics today.  The floristic relationship between Central America and subtropical Asia appears to be closer than expected, as shown by the dis- tribution patterns of Tropidia, Erythrodes, etc.  Based on the occurrence of all six sec- tions and particularly the most primitive form in eastern Asia, Cypripedium seems to be of Asian, rather than Central American, origin.  Selenipedilum possesses some very primitive characters, such as trilocular ovary, vanilla-scented fruit, seed with sclerotic testa, simple column and more or less suffrutescent habit.  The latter is considered by Dahlgren & Clifford (1982) to be one of ancestral characters of monocotyledons, which is now very rare not only in Orchidaceae but also in all monocotyledons.  It is indeed necessary to make further investigations on Selenipedilum and also the new species pub-lished here, as well as a detailed comparison between them.  相似文献   

桂西北喀斯特地区珍稀兰科植物     

《河池学院学报》2012,(2):2

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桂西北喀斯特地区珍稀兰科植物     

覃勇荣 《河池学院学报》2013,(2):2

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成功是汗水浇开的花朵——“成功”作文素材     

吴应海 《初中生之友》2015,(Z3):23-28

导语:成功人人渴求。一个人要想获得成功,机遇非常重要,但更重要的是汗水,只有勤奋刻苦,矢志不渝,咬紧牙关坚持到底,成功之花才会绽放。这样的事例,古今中外,举不胜举。所以,你若想摘取成功的花朵,就请奋发向上,挥汗如雨,执着前行。  相似文献   

刘家保:“中国紫皮石斛之乡”的产业领路人     

凌学江 《今日科苑》2012,(22):20-21

他成为全国石斛行业乃至中药材种植行业公认的最成功的、贡献最大的会长——而他所做的一切,皆为了带领百姓致富和促进当地经济的繁荣。据资料显示,石斛是兰科植物之一,可入药,对人体有驱解虚热,益精强阴等疗效。云南省龙陵县素有"滇西雨屏"之美誉,  相似文献   

马其顿总统访华纪念封首发仪式在京举行     

何俊波 《集邮博览》2008,(1):11-11

应国家主席胡锦涛的邀请,马其顿总统布兰科·茨尔文科夫斯基2007年12月4日对我国进行国事访问。为了纪念茨尔文科夫斯基总统访华,同时,也是为了表达中马两国人民的友谊,中国集邮总公司和外交部集邮协会专门印制了特种纪念封。12月4日晚,"马其顿共和国总统布兰科·茨尔文科夫斯基对中华人民共和国进行国事访问纪念封"首发仪式在北京钓鱼台国宾馆举行。  相似文献   

手参属花粉形态及其分类学意义     

席以珍  郎楷永  胡玉熹 《中国科学院研究生院学报》2000,38(2):137-140

首次报道了兰科的手参属Gymnadenia国产5种植物花粉形态的研究结果,并与邻近的兜被兰属 Neottianthem 花粉进行了对比研究。前者花粉小块形状大多不规则,少数为三棱锥体形;而后者花粉小块大多形状为三棱锥体形,少数形状不规则。手参属花粉外壁表面具很细微的小穿孔、皱波状,小穴和小穿孔与沟渠状纹饰共存,或沟渠状等;而兜被兰属外壁表面纹饰明显,具有5种类型： (1)小穿孔,(2)表面近光滑,(3)沟渠状,(4)拟网状,(5)典型的网状纹饰。手参属花粉表面具粘丝,而兜被兰属花粉表面没有发现粘丝。此外,本文还探讨了手参属和兜被兰属两属花粉在分类学上的意义。  相似文献