共查询到20条相似文献,搜索用时 31 毫秒
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P.V. Bruyns 《South African Journal of Botany》2011,77(3):801-804
Sarcostemma areysianum Bruyns is described from the southern mountains of Yemen. It appears to be most closely related to S. arabicum Bruyns & P. Forst. and S. socotranum Lavranos, differing from both by the taller gynostegium with narrow, mostly acute inner corona lobes. A key to the species from Arabia and Socotra is provided. 相似文献
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D. J. Goyder 《Kew Bulletin》2008,63(3):467-469
Summary
Tylophora tridactylata Goyder (Apocynaceae: Asclepiadoideae) is described from the Eastern Arc mountains of southern Tanzania and illustrated. Its conservation status is assessed. 相似文献
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D. J. Goyder 《Kew Bulletin》2008,63(2):335-338
Summary
Matelea sartago-diaboli is described from the Río Grande inter-Andean dry valley system of central Bolivia, and compared with the recently described
Argentinian endemic M. calchaquina. The new species is illustrated, and its conservation status discussed. 相似文献
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D. J. Goyder 《Kew Bulletin》2008,63(2):331-333
Summary
Funastrum rupicola Goyder, a new species of Apocynaceae: Asclepiadoideae from Bolivia, is described and illustrated. The conservation status of this species is assessed. 相似文献
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D. J. Goyder 《Kew Bulletin》2008,63(3):473-475
Summary
Xysmalobium samoritourei Goyder (Apocynaceae: Asclepiadoideae) is described from the highlands of Sierra Leone and Guinea (Conakry) and illustrated. Its conservation status is assessed. 相似文献
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半蓝角伪叶甲Cerogria basalis(Hope,1831)为角伪叶甲属Cerogria Borchmann,1909的1个大型种,过去仅知道分布于印度,尼泊尔,波斯尼亚和黑塞哥维那,一直缺乏详细和正式的形态描述。近年来,我们从云南采集到该种的雌虫和雄虫。本文对该种雌性和雄性成虫,特别是触角、腹板和雄性外生殖器特征作了详细描述。提供了该种雌、雄两性成虫的背面观和腹面观以及生境照片,以及触角、雄性末节腹板以及雄性外生殖器特征图片。本文还讨论了种内变异。这些工作为该种的正确鉴定提供了依据。 相似文献
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该文报道了采自湖南省湘西世界地质公园德夯园区壳斗科栎属一新种——德夯栎(Quercus dehangensis G. X. Chen, D. G. Zhang & B. Z. Wang),根据其壳斗小苞片覆瓦状排列而被归于栎属。德夯栎和巴东栎(Quercus engleriana Seem.)相近,但与巴东栎的区别在于前者植株通常3~5 m高,侧脉7~10对,小枝、叶柄及叶背被覆具鳞片的星状毛,托叶早落。根据IUCN红色名录标准,德夯栎濒危等级为极危(CR)。 相似文献
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E. Robbrecht 《Plant Systematics and Evolution》1984,145(1-2):105-118
The closely related African generaDictyandra andLeptactina are redelimited. The two genera are distinguished by long tubular corolla-tubes with included anthers (Leptactina) vs. much shorter tubes with exserted anthers (Dictyandra), rather than—as previously thought—presence or absence of multilocellate anthers. The discovery of a new species (Dictyandra congolana from the Congo and W-Zaire) confirms this. It can be concluded, especially from comparative morphological studies of fruits and seeds, thatDictyandra andLeptactina are related toPavetta, Tarenna, Ixora, etc., i.e. the group of genera in theCoffeeae s.l. with terminal inflorescences. It is proposed that the tribePavetteae be revived to accomodate those genera.Presented at the meeting of May 4, 1983 of the Koninklijke Belgische Botanische Vereniging. 相似文献
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白毛算盘子(叶下珠科)在中国无分布 总被引:1,自引:0,他引:1
长期以来,白毛算盘子(Glochidion arborescens Blume)被认为广布于中国云南西部至南部地区。该研究基于多年野外考察及标本查阅工作发现,由于白毛算盘子在中国的分布实为标本错误鉴定所致,相关错误鉴定的标本绝大部分属于绒毛算盘子[G.heyneanum(Wight&Arn.) Wight],少部分属于里白算盘子(G.acuminatum var.acuminatum Müll. Arg.)、毛果算盘子(G.eriocarpum Champ. ex Benth.)、艾胶算盘子[G.lancolarium(Roxb.) Voigt]或厚叶算盘子[G.zeylanicum var.tomentosum(Dalzell) Trimen]等物种,故在此将白毛算盘子在中国的分布予以排除。另外,对白毛算盘子进行了后选模式指定,并提供了白毛算盘子与相关混淆种的物种检索表。 相似文献
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原簇毛黄耆亚属的部分种类从黄耆属中分出,在此基础上恢复了膨果豆属,由此也产生了许多新组合。其中,新组合蒺藜叶膨果豆包含了原蒺藜叶黄耆和甘青黄耆。为验证该分类处理的合理性,该文统计分析了蒺藜叶黄耆和甘青黄耆在果实形态上的差异,同时比较了二者的地理分布式样。结果表明:甘青黄耆和蒺藜叶黄耆之间存在着明显区别,甘青黄耆种级的分类学地位应予以保留,新组合为甘青膨果豆[Phyllolobium tangutica(Batalin)Y.Kang M.L.Zhang]。 相似文献
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Zilda Cristiani Gazim Izabel Galhardo Demarchi Maria Valdrinez Campana Lonardoni Ana Carolina L. Amorim Ana Maria C. Hovell Claudia Moraes Rezende Gilberto Alves Ferreira Edson Luiz de Lima Fábio Antunes de Cosmo Diogenes Aparício Garcia Cortez 《Experimental parasitology》2011,129(2):175-178
Tetradenia riparia (Lamiaceae) is a well-known herbal medicine with a variety of useful properties, including its acaricidal effect. This experiment was carried out to study the bioacaricidal activity of T. riparia essential oil (EO) against engorged females of Rhipicephalus (Boophilus) microplus (Acari; Ixodidae). For this purpose, nine serial concentrations (12.50%, 6.25%, 3.75%, 1.80%, 0.90%, 0.45%, 0.22%, 0.11%, and 0.056% w/v) of T. riparia were used for the adult immersion test (AIT). For the larval packet test (LPT), we used 14 serial concentrations (100.00%, 50.00%, 25.00%, 12.50%, 6.25%, 3.65%, 1.82%, 0.91%, 0.45%, 0.228%, 0.114%, 0.057%, 0.028%, and 0.014% w/v). The results for AIT showed 100.00% and 2.05% mortality, 19.00 and 90.20% for the total number of eggs, egg-laying inhibition of 0.00% and 90.20%, hatchability inhibition of 0.00% and 70.23%, and product effectiveness of 100.00% and 2.89%, respectively. The AIT indicated that the LC50 and LC99.9, calculated using the Probit test, were for mortality (%) 0.534 g/mL (0.436–0.632) and 1.552 g/mL (1.183–1.92); for total number of eggs were 0.449 g/mL (0.339–0.558) and 1.76 g/mL (1.27–2.248); and for hatchability inhibition were 0.114 g/mL (0.0–0.31) and 2.462 g/mL (1.501–3.422), respectively. Larvae between 14 and 21 days old were fasted and placed in each envelope. Bioassays were performed at 27° ± 1 °C, RH ? 80%. Larval mortality was observed 24 h after treatment and showed 10.60–100% mortality in the LPT bioassay. The LPT showed that the LC50 and LC99.9 were 1.222 g/mL (0.655–1.788) and 11.382 g/mL (7.84–14.91), respectively. A positive correlation between T. riparia EO concentration and tick control, was observed by the strong acaricidal effects against R. (B.) microplus, and the mortality rate of ticks was dose-dependent. Our results showed that T. riparia is a promising candidate as an acaricide against resistant strains of R. (B.) microplus. 相似文献
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The authors report first records for the genus Setulipes in Madagascar, with the presence of Setulipes cf. hakgalensis and two new species, Setulipes funaliformis and S. moreaui, as well as a new species from Mauritius: S. mauritiensis. A key to these taxa, as well as to other African species, is supplied. 相似文献
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突颊剑虻属Bugulaverpa首次在中国被发现,自此分布于旧世界的塞洛提剑虻族Cyclotelini的3个属(环剑虻属Procyclotelus,沙剑虻属Ammothereva和突颊剑虻属Bugulaverpa)均在中国被记录。本文记录中国突颊剑虻属1新种:海南突颊剑虻Bugulaverpa hainanensis sp. nov.。该种额为亮黑色,仅在侧缘各有1个半圆形的灰白粉斑。单眼瘤被灰白粉。中足胫节褐黄色。雌虫生殖叉前缘有2个明显的突起。 相似文献
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记述璐蜡蝉科1中国新记录属:狭璐蜡蝉属Podoschtroumpfa Soulier-Perkins及采自云南的该属1新记录种:红带狭璐蜡蝉Podoschtroumpfa rubrolineata Liang,首次描述了该新记录种的雄性外生殖器特征,并提供了该新记录种的生境照片。 相似文献