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对国产11种2变种共16个居群的香茶菜属植物的染色体数目进行了研究。除线纹香茶菜细花变种以外,其它种类的染色体数目均为首次报道。研究结果表明,有12个物种为二倍体,其染色体数目均为2n=24,推测该属植物的染色体基数为x=12。而细锥香茶菜既有染色体数目为2n=24的居群,也存在2n=48的居群,表明该种为二倍体或四倍体,同时2n=48的染色体数目也是香茶菜属内的首次报道。  相似文献   

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中国楼梯草属(荨麻科)几种植物的订正   总被引:1,自引:0,他引:1  
根据对中国楼梯草属Elatostema植物标本的研究,将碧江楼梯草E.bijiangense归并入楼梯草E. involucratum,长叶墨脱楼梯草E.medogense var.oblongum和树志楼梯草E.shuzhii归并入墨脱楼梯草E. medogense,光茎钝叶楼梯草E.obtusum var.glabrescens归并入三齿钝叶楼梯草E.obtusum var.trilobula- tum,三裂楼梯草E.sinense var.trilobatum归并入对叶楼梯草E.sinense,赤水楼梯草E.strigulosum var.semitripilinerve归并入伏毛楼梯草E.strigulosum。  相似文献   

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根据对中国蛇根草属Ophiorrhiza植物标本的研究和野外调查,将琼崖蛇根草O.aureolina f.qiongyaensis Lo和溪畔蛇根草O.humilis Tseng归并入短小蛇根草O.pumila Champ.ex Benth.,将海南蛇根草O.hainanensis Tseng归并入垂花蛇根草O.nutans C.B.Clarke,将广西蛇根草O.kwangsiensis Merr.exLi和变黑蛇根草O.nigricans Lo归并入日本蛇根草O.japonica Bl.,将龙州蛇根草O.longzhouensis Lo和圆锥蛇根草O.paniculiformis Lo归并入广州蛇根草O.cantoniensis Hance。  相似文献   

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Elatostema bijiangense W. T. Wang, E. medogense W. T. Wang var. oblongum W. T. Wang, E. shuzhii W. T. Wang, E. obtusum Wedd. var. glabrescens W. T. Wang, E. sinense H. Schorter var. trilobatum W. T. Wang and E. strigulosum W. T. Wang var. semitripi-linerve W. T. Wang are reduced to synonymies.  相似文献   

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Based on both herbarium and field observations, Deyeuxia sikangensis Keng is reduced to the synonymy of D. scabrescens (Griseb.) Munro ex Duthie, and D. levipes Keng to the synonymy of D. nivicola Hook. f. The identity of two names invalidly published, D. dispar L. Liou and D. agrostioides L. Liou, has also been determined, with the former to D. scabrescens, and the latter to D. diffusa Keng, respectively.  相似文献   

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在标本室研究和野外考察的基础上,对中国野青茅属Deyeuxia的一些种类进行了修订。归并了2个名称,即将Deyeuxia sikangensis Keng并入D. scabrescens (Griseb.) Munro ex Duthie作为异名; 将D.levipes Keng并入D. nivicola Hook. f. 作为异名。确认了D. dispar L. Liou和D. agrostioides L. Liou是两个未合格发表的名称,将前者归并于D. scabrescens,后者归并于D. diffusa Keng。  相似文献   

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The two generaPlectranthus andIsodon are compared and found to be very dissimilar.Isodon ist considered to be misplaced inOcimeae subtribePlectranthinae and apparently is more closely related to subtribeHyptidinae. The disjunct genusRabdosiella is compared to these two genera and regarded to be polyphyletic. The AfricanR. calycina (Benth.)Codd is returned toPlectranthus and calledP. calycinus Benth., while the AsianR. ternifolia (D. Don)Codd is placed inIsodon sect.Pyramidium and calledI. ternifolius (D. Don)Kudo.  相似文献   

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云南乌头属一些种类的修订   总被引:3,自引:3,他引:3  
对云南乌头属部分种类进行了分类修订。将27种、23变种和3变型降为异名;冯氏乌头的种的等级得到恢复;描述了1个新变种,即曲毛冯氏乌头。  相似文献   

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In this paper, some species of Aconitum L. (Ranunculaceae) from Yunnan are taxonomically revised. Twenty-seven species, twenty-three varieties and three forms are reduced to synonyms; the specific status of A. fengii is restored, and one variety, A. fengiivar. crispulum Q. E. Yang is described as new.  相似文献   

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最近的研究结果表明,国产糙苏属(Phlomis)的所有种类(除了栽培种橙花糙苏P.fruticosa以外)以及沙穗属(Eremostachys)、独一味属(Lamiphlomis)、钩萼草属(Notochaete)均应并入草糙苏属(Phlomoides)。新界定的草糙苏属因其草本习性等特征而与糙苏属易于区别。尽管已有不同作者对国产草糙苏属大部分物种名称进行了新组合,但仍遗漏了11个物种名称。为方便使用,本文对这11个名称进行了新组合,同时提供了新界定的草糙苏属国产物种名录及检索表,共50种9变种。  相似文献   

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Taxonomic notes on the Indian species of Keratella (Rotifera)   总被引:1,自引:1,他引:0  
Nayar  C. K. G. 《Hydrobiologia》1965,26(3-4):457-462
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四川乌头属的修订   总被引:4,自引:0,他引:4  
四川是我国乌头属Aconitum L.植物的重要分布区。本文对该地区的乌头属植物进行了分类修订。通过文献查阅、野外观察和标本室研究,对乌头属的形态性状在居群间和居群内的变异式样进行了比较分析,发现叶分裂程度、上萼片的形状和花梗毛被等性状是较为可靠的分种依据,但是在个别情况,这些性状也会在同一种的同一居群内或不同居群间发生变化。花瓣和种子的特征对于属下划分有重要意义。本文承认四川乌头属植物有46种11变种,另有2种和1变种暂存疑。29种和22变种降为异名;作出新组合2个,其中包括1个改级新组合。紫乌头A. delavayi Franch.和保山乌头A. nagarum Stapf为四川新分布记录。对康定乌头A. tatsienense Finet &; Gagnep.、川鄂乌头A. henryi Pritz.和狭裂乌头A. refractum (Finet &; Gagnep.) Hand.-Mazz.进行了后选模式的标定。初步澄清了东俄洛乌头A. tongolense Ulbr.和狭裂乌头等种类中长期存在的名实混乱。还给出了各个种的形态描述、地理分布以及分亚属、分系和分种检索表。  相似文献   

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Prosopocoilns gracilis(Saunders,1854) and its seven allied species from China are revised.Lectotype,paralectotypes of P.gracilis(Saunders,1854) and P.denticulatus(Boileau,1901) are designated.The doubtful species,P.piceipennis(Westwood,1855) is evidently confirmed as a valid species with verification of its type depository.Two highly similar species,P.crenulidens(Fairmaire,1895) and P.denticulatus(Boileau,1901) are compared in detail for correcting longstanding wrong diagnoses of them.P.similis Schenk,2009 is illustrated with male genitalia firstly.Two recently-published species,P.andreasi Schenk,2009 and P.katsurai Fujita,2010 are treated as new junior synonyms.All the five valid species in this paper are redescribed,with illustrations of adult(including type)habitus,male and female genitalia if they are available.A key to large males is provided for identifying them briefly.  相似文献   

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Lectotypes of Paraphlomis albiflora (Hemsl.) Hand.‐Mazz. and Paraphlomis gracilis (Hemsl.) Kudô are designated. The name Paraphlomis javanica (Blume) Prain var. angustifolia C. Y. Wu & H. W. Li ex C. L. Xiang, E. D. Liu & H. Peng is validated by a type designation.  相似文献   

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Three species of the red algal genus Herposiphonia (Ceramiales, Rhodomelaceae) found in Japan are described, and taxonomic features of the genus are discussed. Herposiphonia crassa Hollenberg is reported from Japan for the first time and is characterized by thick axes (200–350 µm in diameter) and determinate branches (100–200 µm in diameter), relatively short determinate laterals (400–1200 µm in length) with a large number of periaxial cells (15–19 per segment) and three (occasionally two or four) vigorously developed (1.8–2.5 mm in length by 50–75 µm in diameter basally) trichoblasts on each determinate lateral. Herposiphonia elongata Masuda et Kogame is also reported from Japan for the first time and is characterized by the conspicuous thickening growth of cystocarp‐bearing branches and spermatangial branches with an elongated sterile tip. Some newly found features of Herposiphonia fissidentoides (Holmes) Okamura are presented: the rhizoid production from the central portion of parental periaxial cells in addition to the distal end, virtual absence of vegetative trichoblasts, production of procarpial trichoblasts and spermatangial branches on fertile determinate branches on short indeterminate laterals, cystocarps sometimes with a short spur, and extremely large tetrasporangia.  相似文献   

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The Chilean Puya species (Puyoideae, Bromeliaceae) constitute an early diverging group within the genus and thus are key taxa for the understanding of the early evolution and biogeography of Puya. However, a modern taxonomic treatment including information from molecular phylogenetic studies is still lacking. Here, a taxonomic revision of the Chilean species of Puya is presented based on morphological, molecular, and biogeographic data. A re-evaluation of the widely applied concept of P. berteroniana led us to the conclusion that the type of P. berteroniana is of hybrid origin and is maintained as Puya × berteroniana. Our studies revealed that the name P. berteroniana has been widely misapplied to what in fact is the northern metapopulation of P. alpestris, which is here described as a new subspecies, Puya alpestris subsp. zoellneri, a member of subgenus Puya. A lectotype is designated for Puya copiapina and a neotype for P. chilensis. Altogether, six Puya species, two subspecies, four varieties and one hybrid taxon are recognized for the Chilean flora in this revision: P. alpestris subsp. alpestris and subsp. zoellneri; P. boliviensis; P. chilensis; P. gilmartiniae; P. coerulea var. coerulea, var. intermedia, var. monteroana, and var. violacea; P. venusta; and P. × berteroniana. A key is provided for their identification.  相似文献   

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The furva species group of the genus Nomada in Japan is taxonomically revised and the following three species are recognized: N. okubira Tsuneki, 1973, stat. nov., N. pulawskii Tsuneki, 1973, and N. taicho Tsuneki, 1973. Nomada okubira is raised to species rank, and N. etigonis Tsuneki, 1986, is synonymized under N. okubira. Detailed illustrations of male terminalia are provided for N. okubira and N. taicho. A key to the Japanese species is provided.  相似文献   

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