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1.
中国景天属一些种的订正   总被引:3,自引:0,他引:3  
本文对国产景天属的6种植物进行了分类订正。归并了7种1亚种和2变种,同时对中国植物志中景天属存疑种Sedum phyllanthum Levl.et Vant.和S.subtile Miq.的范围及其分类地位进行了讨论。根据对S.hsinganicum Chu ex S.H.Fu的模式标本以及S.floriferum Praeger模式标本图和模式产地标本的研究,确认二者所具性状均在S.aizoon L.的性状变异范围内,故予归并。S.onychopetalumFrod.,S.grammophyllum Frod以及S.anhuiense S.H.Fu et X.W.Wang经研究均被作为S.lineareThunb.的异名处理。S.formosanum N.E.Br.在《中国植物志》中被并入S.alfredii Hance,现恢复为独立的种。此外还报道了一个中国新记录种S.hakonense Makino。  相似文献   

2.
本文涉及百合科菝葜属Smilax 7个分类群:用Smilax longibracteolata J.D.Hook.和S.elegans Wall.ex Kunth分别代替中国植物志第15卷(1978)中由于鉴定错误而使用的〖WTBX〗S.ma ireiH.Lévl.和S.glaucophylla Klotz.S.mairei是一个完全不同的种,应予承认,现根据存于爱丁堡的模式标本予以重新描述。S.pinfae nsis H.Lévl.和nthaC.H.Wright 在中国植物志第15卷中被分别并入S.cocculoides Warb.和S.ferox Wall.ex Kunth,现恢复为独立的种。此外,本文还发表了一个新改级〖WTBX〗S.retroflexa[WTBZ] (Wang et Tang ) S.C.Chen和一个新名称S.munita S.C.Chen,后者用来代替晚出同名S.rigida Wall.ex Kunth。  相似文献   

3.
Four new species of the genus Aristolochia (Aristolochiaceae) are described as new from China. They are Aristolochia austrochinensis C. Y. Cheng & J. S. Ma, A. caulialata C. Y. Wu, A. salweenensis C. Y. Cheng & J. S. Ma, and A. kunmingensis C. Y. Cheng &J. S. Ma. A naturalized species, A. ringens Vahl is also reported.  相似文献   

4.
报道了中国展足蛾属5新种和1新纪录种,绘制了新种的外生殖器特科。模式标本保存在南开大学生物系。  相似文献   

5.
中国连珠藻属(串珠藻科)的分类研究   总被引:3,自引:0,他引:3  
记述了中国产连珠藻属Sirodotia Kylin的6个种,即黄山连珠藻S.huangshanensis Z.X.Shi et S.L.Xie,威拉连珠藻S.huillensis(Welwitsch ex W.et G.S.West)Skuja,中华连珠藻S.sinica Jao,纤细连珠藻S.delicatula Skuja,瑞典连珠藻S.suecica Kylin和细连珠藻S.tenuissima(Collins)Skuja ex Flint。其中,黄山连珠藻S.huangshanensis Z.X.Shi et S.L.Xie为新种,威拉连珠藻S.huillensis(Welwitsch ex W.et G.S.West)Skuja,纤细连珠藻S.delicatula Skuja和瑞典连珠藻S.suecica Kylin为中国新记录。  相似文献   

6.
中国匍柄霉研究Ⅱ一新种及四个中国新记录   总被引:2,自引:0,他引:2  
薛峰  张修国  王勇  王汉忠 《菌物学报》2005,24(3):322-329
报道匍柄霉属的一新种亚小球匍柄霉Stemphyliums subglobuliferum和四个中国新记录,小球匍柄霉、蔷薇匍柄霉、名张匍柄霉和番茄匍柄霉。新种除形态学研究外,分析了其与本属和其它相关属种的ITS和gpd(三磷酸甘油醛脱氢酶)基因序列的系统学关系,为新种的确立提供了分子证据。新种的模式标本(HSAUPⅢ0140)保存于山东农业大学植物病理系标本馆。  相似文献   

7.
四种云杉的核型分析   总被引:5,自引:0,他引:5  
李林初  王刚  苏苏  徐阿生 《广西植物》2001,21(1):43-46,T001,T002
首次报道了中国珍稀濒危保护植物长叶云杉 ( P. smithiana ( Wall.) Boiss.)和康定云杉 ( P. likian-gensis( Franch.) Pritz.var.montigena( Mast.) Cheng ex Chen)及我国特产的青海云杉 ( P.crassif oliaKom.)和林芝云杉 ( P.likiangensis( Franch.) Pritz.var.linzhiensis Cheng et L.K.Fu)的核型。它们的核型公式都是 K( 2 n) =2 4 =2 2 m+2 sm (林芝云杉有 1条 B染色体 ) ,染色体相对长度组成分别为 2 n=1 4 M2 +8M1 +2 S,2 L+1 2 M2 +6M1 +4S,2 L +1 0 M2 +1 0 M1 +2 S,和 2 L+1 2 M2 +6M1 +4S.均为 2 A (除青海云杉 1 A外 )核型类型。  相似文献   

8.
兰属中若干分类群的订正   总被引:10,自引:0,他引:10  
基于对许多活植物的观察,对兰科中兰属的若干种类进行了分类学考订,结果承认菅草兰Cymbidium tortisepalum与峨眉春蕙C. omeiense为独立的种,将春剑C. longibracteatum移至菅草兰之下作为变种,送春C. szechuanicum移至莎叶兰C. cyperifolium之下作为变种。由于春剑、峨眉春蕙和送春的模式标本及引证标本已在30多年前全部丢失,本文指定了新模式。  相似文献   

9.
Pollination by male and female Euglossini bees, euglossophily, was suggested for a number of neotropical Gesneriaceae species. Information on bee species other than Euglossini as pollinators of neotropical members of this family is limited, and in the tribe Sinningieae data about bee pollination are still lacking. Here, we report on floral biology and bee pollination of four Sinningia species: S. schiffneri, S. eumorpha, S. villosa, and Sinningia "canastrensis". The flower features, such as corolla size, shape, and colour, are very different among the four species, but all conform to the melittophilous syndrome. The average nectar volume and sugar amount is low in S. schiffneri, S. eumorpha, and Sinningia "canastrensis", when compared to that of S. villosa, but low nectar amounts is a general feature of Sinningia species. The main pollinators of the four species are: small Tapinotaspidini (Trigonopedia ferruginea) of S. schiffneri, large Bombini (Bombus morio) and large Centridini (Epicharis morio) of S. eumorpha, large Euglossini (Eulaema cingulata and Eufriesea surinamensis) of S. villosa, and large Euglossini (Eufriesea violascens) and Megachilini (Megachile sp.) of Sinningia "canastrensis". Out of the four species, only S. villosa is exclusively Euglossini-pollinated. The marked differences in flower features and nectar production of these Sinningia species may reflect their pollination by distinct groups of bees. These results strengthen the idea of multiple origins for the pollination systems involving bees within this genus, which is highly supported by molecular phylogenetic analyses.  相似文献   

10.
在野外考察和室内标本研究的基础上,对薄鳞蕨属(中国蕨科)的分类进行了研究。 将2种 (华西薄鳞蕨和察隅薄鳞蕨) 和2变种(大叶薄鳞蕨和宽叶薄鳞蕨)进行了归并处理, 承认该属有4种1变种。  相似文献   

11.
Two species of Spilogona, S. angustigena sp. n. and S. tatrica sp. n., are described from the Czech Republic and Slovakia, respectively. Both species are characterised by a gynaecomorphic shape of the male head, i.e., by a broad frons and the presence of a pair of orbital setae. Three species with this type of head are already known in the Palaearctic region: S. karelica (Tiensuu, 1935) from Russian Karelia, S. lapponica (Ringdahl, 1932) occurring in Norway and Sweden and redescribed here from material collected recently in Russia and Sweden, and S. spinicosta (Stein, 1907) from Tibet. All five species are compared and a new identification key is given. Apart from the external similarity of the male heads, the species under study are hardly closely related and their dichoptic heads may be explained as a homoplasy among similar ecomorpha.  相似文献   

12.
The body of adenovirus fiber messenger RNA is specified by viral r-strand co-ordinates 86.2 to 91.2. Since this mRNA is transcribed from the major late promoter at map position 16, nuclear precursors to the mRNA could be as large as 84% of the length of the 35,000 nucleotide genome. This study identified and characterized polyadenylated nuclear RNAs that contain fiber sequences and therefore are possible processing intermediates. These nuclear RNAs were characterized by hybridization of [3H]RNA preparations and by electron microscopy of RNA-DNA hybrids. Three size classes of RNAs containing fiber sequences were identified: (1) a 22 S species maps from 86.2 to 90.3. This RNA has essentially the same co-ordinates as fiber mRNA. (2) Two 28 S species have co-ordinates of 80.1 to 90.4 and 85.9 to 96.9, respectively. Thus one species has a 5′ terminus coincident with that of the mRNA body, and one has a 3′ terminus coincident with that of the 3′ end of the mRNA body. The polyadenylated terminus at 96.9 does not coincide with the 3′ end of any known mRNA. (3) There are at least two 35 S species. The 3′ end of one species is coincident with that of fiber mRNA. The 3′ terminus of the second RNA is at approximately 96.9.The labeling kinetics of each of these polyadenylated nuclear RNAs were investigated. In continuous label experiments, the two 35 S RNAs and the 85.9 to 96.9 28 S RNA became uniformly labeled in approximately 60 minutes. The 22 S RNA and the 80.1 to 90.4 28 S species continued to accumulate for at least several hours. These results are consistent with a precursor function for the 35 S RNAs and the 85.9 to 96.9 28 S species. The structures of the putative precursors imply that processing of the 3′ end is not a prerequisite for 5′ cleavage.  相似文献   

13.
陈双林  李玉 《菌物学报》2000,19(3):328-335
在前两篇关于中国绒泡粘菌属分类的研究论文中,已经报道了见于东北和新疆的新种和新记录种,本文报告的是散见于河南、山东、福建、陕西、广西和四川六个省区的六个种,金色绒泡菌和紫绒泡菌是中国新记录种,另外四种为新种。膜壁绒泡菌Physarumbadhamioides以囊被上石灰质稀散及孢丝宽扁、少石灰质而有别与其它绒泡菌;迷乱绒泡菌P.confusum则因易与绿绒泡菌P.viride和垂头绒泡菌P.nutans混淆而得名,但以散生的孢囊具短柄、石灰结与囊被同为灰绿色等特征显著不同于后者;畸形绒泡菌P.deformans具有显然不规则的孢囊、炳和孢子,易与其它绒泡菌相区分;草生绒泡菌P.herbaticum发生于活草叶上,淡绿色的联囊体发达,石灰结之间的连线细长而明确,使其与相近的绒泡菌明显可分。所有研究标本都保存在中国科学院微生物研究所菌物标本馆(HMAS)。  相似文献   

14.
关于蒙古绣线菊毛枝变种及回折绣线菊的学名订正   总被引:2,自引:0,他引:2  
赵一之  王铁娟 《植物研究》2000,20(3):257-259
支持将蒙古绣线菊毛枝变种提升为种的等级且于宁夏绣线菊同种,但其合法学名应为Spiraea tomentulosa(Yu)Y.Z.Zhao。与此同时,本文发现了真正的蒙古绣线菊的毛枝变种--S. mongolica Maxim.var.pubescens Y.Z.Zhao et T.J.Wang。  相似文献   

15.
三种东亚冷杉植物的核型研究   总被引:4,自引:0,他引:4  
首次报道了急尖长苞冷杉AbiesgeorgeiOrrvar.smithii(ViguieetGaussen)Chenget.L.K.Fu,臭冷杉A.nephrolepis(Traurv.)Maxim和杉松,A.holophyllamaxim等3种东亚冷杉植物的核型,它们的核型公式分别是K(2n)=24=18m(2SC)+6sm,18m(6SC)+6sm和14m(6SC)+10sm,染色体相对长度组  相似文献   

16.
黄土高原的VA菌根真菌Ⅳ.   总被引:4,自引:0,他引:4  
红色盾巨孢囊霉(S.erythropa)和珊瑚囊盾巨孢囊霉(S.coralloidea)为中国新记录种。考察过的样片保存在山西农科院棉花研究所。  相似文献   

17.
The present paper deals with a comparative karyotypic study of three species in Fritillaria-F. thuncergii Miq., F. anhuiensis S. . Chen et S. F. Yin and F. hupehensis Hsiao et K. C. Hsia. The karyotype of F. anhuiensis S. C. Chen et S. F. Yin is first reported. The karyotypes of the three species of Fritillaria are rather similar, all with K(2n)=24= 2m+2sm+12t+4st+4m (SAT), showing a close interspecific relationship. They all have two pairs of st chromosomes, one of which is the third chromosome in all the three species studied, but the other is the seventh in F. thunbergii Miq, the eighth in F. anhuiensis S. C. Chen et S. F. Yin, and the fifth in F. hupehensis Hsiao et K. C. Hsia. It tells us that there are some differences in their karyotypes. All of the three species possess two pairs of satellite chromosomes with the satellites located on the long arms. A heterochromatic zone is found sometimes on long arms of No. IX chromosome in each species of Fritillaria and on one of No. I chromosomes in both F. thunbergii Miq. and F. anhuiensis S. C. Chen et S. F. Yin, a chromosome polymorphism occurring between populations of Fritillaria. In addition, three B chromosomes are always found in most root-tip cells of F. hupehensis Hsiao et K. C. Hsiao.  相似文献   

18.
介绍了分布于我国的双鬃缟蝇属17种,包括2新种和4新纪录种,即Sapromyza (Notiosapromyza) ainanensis sp.nov.,Sapromyza (Sapromyza) ventistriata sp.nov.,S.(N.) longimentula Sasakawa,2001,S.(S.)annulifera M alloch,1929,S.(S.) sexmaculata Sasakawa,2001,S.(S.) septemnotata asakawa,2001,并编制了分种检索表。  相似文献   

19.
Three mycobacterium strains isolated from clinical specimens in Japan were provisionally assigned to the genus Mycobacterium based on their phenotypical characteristics. These isolates were further investigated to determine their specific taxonomic statuses. Mycolic acid analysis and 16S rRNA gene, rpoB, and hsp65 sequence data for the isolates showed that they are most similar to M. terrae complex. DNA-DNA hybridization studies indicated that the three strains were of two species and were distinguishable from M. terrae, M. nonchromogenicum, and M. hiberniae. Therefore, these strains represent two novel species within the genus Mycobacterium. However, one potential new species should have been considered as M. arupense with the 16S rRNA gene and hsp65 sequences similarities of 99.8% and 100% respectively; it was isolated from human specimens in the United States and was proposed in June 2006 as a new species. This report describes the first isolation of M. arupense in Japan, suggesting that the organism is clinically relevant. In addition, we propose the novel species designation Mycobacterium kumamotonense sp. nov. The type strain is CST 7247(T) (=GTC 2729(T), =JCM 13453(T), =CCUG 51961(T)).  相似文献   

20.
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