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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
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闫光兰 《南阳师范学院学报》2003,2(3):54-55
通过大量调查,将南阳市兰科植物花卉资源分为:观花、观叶、既观花又观叶三大类,并提出保护、开发利用的初步设想。 相似文献
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Paphiopedilum malipoense S. C. Chen et Tsi is a very interesting new species with its flower similar to that of Cypripedium, especially section Cypripedium. It belongs
to subgenus Brachypetalum, the most primitive group of Paphiopedilum, but differs from
its allied species in hgniva elliptic-lanceolate sepal with cuspidately acuminate apex, rather
narrow petals and horizontal lip, which are of common occurrence in many cypripediums, but
very rare in paphiopedilums. Apparently, this is an intermediate form, or a link, between
Paphiopedilum and Cypripedium, but it does not seem to arise from hybridization between
them, because no Cypripedium has been found wherever Paphiopedilum occurs.
The new species is distributed in southeastern Yunnan of China. In this area, as well
as in river valleys of western Yunnan or the Hengduan Mountains, there have been four
species of the same genus reported before. As we know, the Hengduan Mountains and their
adjacent areas are rich in Cypripedium. The differentiation of the genus there is remarka-
ble. All five sections it contains occur there and three of them are quite distinctive. For
example, the general appearance of the section Bracleosa is dissimilar to that of any other
cypripediums, but closely resembles that of Listera. It appears that the difference between
sect. Bracteosa of Cypripedium and sect. Brachypetalum of Paphiopedilum is not neces-
sarily wider than that between sect. Bracteosa and sect. Cypripedium of the same genus.
Apparently, it is reasonable to consider Paphiopedilum to be an evolutional branch of Cy-
pripedium extending into tropical area, with its primitive group (subgenus Brachypetalum)
still remaining in its northern fringe area. This primitive subgenus has eight species, dis-
tributed from western Yunnan to the Malay Peninsula. Five of them, including the inter-
mediate and primitive form published here, are found in the hilly land of southeastern Yun-
nan and the river valleys of western Yunnan. All these facts suggest its area of origin: the
river valleys of the Hengduan Mountains and the lower hilly land contiguous to the southof them. 相似文献
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报道了贵州兰科2个种。贵州杜鹃兰Cremastra guizhouensis Q.H.Chen&S.C.Che
n系一新种,与杜鹃兰C.appendiculata(D.Don)Makino相近,区别点在于本新种具长达10-
14cm的圆筒状假鳞茎和在唇瓣中裂片上有1枚平滑的胼胝体。另一个种为线叶美冠兰Eulophia siamensis Rolfe ex Downie,首次报道也产于中国。 相似文献
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余娜 《思茅师范高等专科学校学报》2003,19(3):87-88,F003
以民族植物学的观点介绍兰科植物石斛(Herba Dendrobii)的命名和药用历史,分析了石斛属植物的观赏、药用价值以及现代人热衷石斛的原因,探讨了石斛的民族植物文化。石斛集观赏、保健、药用于一体,是值得开发利用的一类植物。 相似文献