共查询到19条相似文献,搜索用时 93 毫秒
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本文描述了发现于福建的冬青科冬青属2新种——泰宁冬青Ilex tainingensis G. S. He和南平冬青I. nanpingensis G. S. He,并分别说明两者与其他近缘种的区别要点。泰宁冬青与太平山冬青I. sugerokii Maxim.的区别在于前种小枝被毛,无棱槽,叶片宽卵圆形,花淡紫色,分核表面具细条纹,背后中部有一凹槽。南平冬青与拟榕叶冬青I. subficoidea S. Y. Hu区别在于前种果为椭圆形,较大,表面光滑无腺点,果梗长于1 cm,每分核上端有2尖角,均可以区别。 相似文献
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湖南广西泡果荠属一新种张渝华(浙江省医学科学院药物研究所,杭州310013)ANEWSPECIESOFHILLIELLAFROMHUNANANDGUANGXIZhangYuhua(InstituteofMateriaMedica,ZhejiangAc... 相似文献
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广西绞股蓝属药用植物一新种 总被引:4,自引:0,他引:4
扁果绞股蓝 新种 美七脉(壮语) Gynostemma compressum X. X. Chen et D. R. Liang, sp. nov. Species affinis G. guangxiensi X. X. Chen et D. R. Liang, quae foliis pedatis 5-foliolatis, foliolis obovatis vel ovaetooblongis, apice obtusis, fruetibus triquetro-globosis, seminibus oblongis, margine osulcatis differt. Herbae scandentes. Caulis gracilis, sulcatus, glaber. Cirrhi filiformes, 相似文献
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Xiao‐Jun Huang Si Wen Xi‐Feng Guan Zhen‐Long Wu Man‐Mei Li Chun‐Lin Fan Qing‐Wen Zhang Ging Chan Ying Wang Wen‐Cai Ye 《化学与生物多样性》2019,16(7)
Asprellosides A‐K, nine new ursane‐type triterpenoid glycosides ( 1 – 9 ), and two new oleanane‐type triterpenoid glycosides ( 10 and 11 ), including six rare sulfated triterpenoid glycosides, were isolated from the roots of Ilex asprella. Their structures were determined on the basis of comprehensive spectroscopic analysis and chemical methods. Among these compounds, asprelloside B ( 2 ) and asprelloside C ( 3 ) are the first examples of triterpenoid glycosides bearing a rare 3,4‐O‐disulfo‐xylopyranosyl residue. All the saponins isolated showed no significant effects against respiratory syncytial virus (RSV) and lipopolysaccharide‐induced nitric oxide production in Raw264.7 macrophages. 相似文献
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Yi Yang Lei Jiang En-De Liu Wei-Li Liu Li Chen Yi-Xuan Kou Deng-Mei Fan Shan-Mei Cheng Zhi-Yong Zhang Hua Peng 《植物分类学报:英文版》2023,61(6):1036-1046
Resolving the infrageneric classification of species-rich genera has been challenging in plant taxonomy. Ilex L. is a subcosmopolitan genus with over 600 species of dioecious trees and shrubs. Many classification systems based on morphological data have been proposed during the past 250 years. However, these systems (such as Loesener's and Galle's systems) may not truly reflect Ilex's evolutionary trajectories because most of those system's infrageneric hierarchies are not monophyletic. In this study, we reconstructed a phylogeny of Ilex L. comprising 15 moderately to highly supported clades using rigorously identified samples (202 species) and closely authenticated gene sequences of three nuclear genes [internal transcribed spacer (ITS), external transcribed spacer (ETS), and nepGS]. The newly generated phylogenetic tree resembles essentially that of the nuclear tree of Manen et al., but shows conspicuous topological differences with the phylogeny of Yao et al. Closely scrutinizing morphological variation and distributional patterns of 202 species, this study found that most lineages of Ilex identified herein are well defined by a particular trait or a combination of morphological and distributional traits, displaying phylogeny–morphology–distribution conformity that has seldom been uncovered in previous studies. Given the general phylogeny–morphology–distribution conformity revealed in this genus, we put forward an updated sectional classification system for Ilex that temporarily contains 14 sections. The new classification will provide a robust framework for studying the evolution and diversification of this ecologically and economically important genus. 相似文献
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湖北省直翅目三新种(直翅目) 总被引:3,自引:0,他引:3
记述采自湖北省九宫山及武当山地区直翅目昆虫3新种,即橙股卵翅蝗Caryanda byrrhofemura,sp.nov.,九宫山澳汉蚱Austrohancokia jiugongshanensis,sp.nov.及幕阜山台蚱Formosatettix mufushanensis,sp.nov.。此外记述贺兰台蚱Formosatettix helanshanensis Zheng的雄性。 相似文献
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记述采自中国湖南省的佯越蝗属1新种--黑胫佯越蝗Paratonkinacris nigritibia,sp.nov.。模式标本保存于陕西师范大学动物研究所(正模)及湖南教育学院生物系(副模)。 相似文献