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1.
双参属Triplostegia Wall.ex DC.由分布于东南亚地区的2个种组成,为多年生草本植物。它的归属一直存在争议,有时置于川续断科Dipsacaceae或败酱科Valerianaceae,有时单立一科,即双参科Triplostegiaceae。本研究对广义川续断目Dipsacales s.l.的21种植物(分别来自于败酱科、川续断科、双参属、刺参属Morina、广义忍冬科Caprifoliaceae s. l.、五福花科 Adoxaceae)和外类群人参Panax schin-seng Nees.的叶绿体 DNA trnL-F区进行了测序,并建立系统发育树状图。结果显示,败酱科、川续断科、双参属、刺参属和广义忍冬科的4个属(双盾木属Dipelta、虫胃实属Kolkwitzia、六道木属Abelia和北极花属Linnaea)形成 了一个单系群并得到了很强的支持(100% bootstrap);双参属与川续断科有更近的关系,建议作为一个亚科置于川续断科;广义忍冬科为一多系类群;而刺参属与其他广义川续断目类群之间的关系尚不能确定。  相似文献   

2.
认为伞形科藏香芹属Meeboldia H. Wolff只包含2种,即滇芹Meeboldia yunnanensis (H. Wolff) Constance & F. T. Pu和蓍叶藏香芹M. achilleifolia (Wall. ex DC.) Mukherjee & Constance。  相似文献   

3.
 我国木蓼属有11种,3变种,其中特有种3个。本文通过对它们的形态,花粉等性状的研究,探 讨了属的系统位置,提出了木蓼族的演化系统。在分析了木蓼属的性状后,认为木蓼组Sect Tragopyrum(Bieb.)Meisn.较为原始,应置于刺木蓼组Sect.Atraphaxis之前。本文还研究了该属的地理分布,初步探讨了它的起源及现代分布格局的形成。  相似文献   

4.
本文对国产石松科(狭义)进行了分类学研究,共记载本科植物6属15种3变型。文中引用新建 立的1属,即拟小石松属Pseudolycopodiella Holub,并包含1个新命名:Lycopodium neopungens H.S.Kung et L.B.Zhang,1个新变型:Palhinhaea hainanensis C.Y. Yang f.glabra H.S.Kung et L.B.Zhang和9个新 异名:Lycopodium annotinum L.var.brevifolium Christ(=L .zonatum),L.annotinum L.var.aciculare Christ (=L.zonatum),L.alticola Ching(=L.zonatum),L.simulans Ching et H.S.Kung ex Ching(=L.japoni- cum),L.interjectum Ching et H.S.Kung ex Ching(=L.japonicum),L. taliense Ching(=L.japonicum),L.pseudoclavatum Ching(:=L.japonicm.),L. pseudoclavatum Ching var.yunnanense Ching(=L.japonicum),及L. centro-chinense Ching(=L. japonicum).本文还记述了有关分类群的地理分布,并认为中国没有Dipha- siastrum wightianum(Wall.ex Grev.et Hook.)Holub的分布。  相似文献   

5.
对罂粟科Papaveraceae国产紫金龙属Dactylicapnos Wall. 4种植物的花粉和种子进行了光学显微镜和扫描电镜观察。该属花粉粒常为近球形,6散沟,花粉粒直径为29.2-50.8。本属植物的花粉有很多共同特征,但种之间有区别。萌发沟清晰(宽果紫金龙D. roylei (Hook. f. et Thoms.) Hutch.),或不清晰(紫金龙D. scandens (D. Don) Hut ch.和丽江紫金龙D. lichiangensis (Fedde) Hand._Mazz.)至模糊  相似文献   

6.
研究了国产毛茛属Ranunculus L.11种及其4个近缘属——美花草属Callianthemum C.A.Meyer、   侧金盏花属Adonis L.、碱毛茛属Halerpestes E.Greene、水毛茛属Batrachium S.F.Gray 5种植物的染色体   数目和形态。发现美花草C.pimpinelloides(D.Don)Hook.f.et Thoms.、川滇毛茛R.potaninii Kom.、深   齿毛茛R.popovii var.stracheyanus(Maxim.)W.T. Wang、高原毛茛R.tanguticus(Maxim.)Ovcz.、石龙   芮R.sceleratus L.、西南毛茛R.ficariifolius Lévl.et Vant.、褐鞘毛茛R.sinovaginatus W.T. Wang、三裂碱毛茛H.tricuspis(Maxim.)Hand.-Mazz.和碱毛茛H.sarmentosa (Adams) Kom.9种植物为染色体基数x   =8的四倍体(2n=4x=32);短柱侧金盏花A.brevistyla Franch.、丝叶毛茛R.nematolobus Hand.-Mazz.、   棱喙毛茛R.trigonus Hand.-Mazz.、茴茴蒜R.chinensis Bunge 4种植物为染色体基数x=8的二倍体(2n=   2x=16);毛茛B.japonicus Thunb.、黄毛茛R.laetus Wall.2种植物为染色体基数x=7的二倍体(2n=2x   =14);水毛茛R.bungei (Steud.) L. Liou  有二倍体(2n=2x=16)和三倍体(2n=3x=24)两种细胞型。根  据染色体资料,讨论了上述5属的属间关系和毛茛属中一些种的种间关系。  相似文献   

7.
报道了中国兰科植物一新记录种,黄花线柱兰Zeuxine flava (Wall. ex Lindl.) Benth. ex Hook. f.。本种的唇瓣橘黄色并呈“T”形,前唇裂片成方形,长宽近相等,唇瓣基部囊内各具一枚钩状胼胝体。  相似文献   

8.
铁线莲属研究随记(Ⅰ)   总被引:1,自引:0,他引:1  
于1999年5月至9月,作者先后访问了K、BM、P和S四个植物标本馆,在查阅他们收藏的铁线莲属植物标本的过程中,发现该属的一些分类学问题:(1)发现过去一些学者分别错误地将Clematis montana var.brevifoliola Kuntze,C.apiifolia var.biternata Makino,C.subumbellata Kurz,C.goudotiana Planch.&; Triana,C.insidiosa Baill.,C.kockiana Schneid.和C.longicauda A.Rich.等加以归并,这些均应予以恢复。(2)发现过去发表的subsect.Africanae M.Johnson,C.umbellifera Gagnep.,C.pubescens Benth.,C.rhodocarpa Rose,C.edentata Baker,C.djalonensis Cheval.,C.oliveri Kuntze,C.tibetana ssp.vernavi var.dentata Grey-Wilson,C.yunuanensis var.brevipedunculata W.T .Wang,C.clarkeana var.stenophylla Hand.-Mazz,C.subfalcata Pei ex M.Y.Fang,C.angustifoliola W.T .Wang,C.dasyandra var.polyantha Finet &; Gagnep.等学名不能成立,应加以归并。(3)对构成黄花铁线莲组sect.Meclatis的二亚组给出新的特征集要;根据C.sericea B.H.K.ex DC.与C.grossa Benth.的形态区别不大,有时甚至难以区分以及二者的分布区一南一北互相邻接的分布格局,认为二者可能为一对姊妹群,并将其等作为一个种的两个地理变种处理;认为在非洲大陆广布并分布到阿拉伯半岛的C.hirsuta Perr.&; Guill.包含4变种;将过去置于C.oweniae Harv.的变种var.jonodii移到此种中,并根据C.inciso-dentata A.Rich.特殊的绵毛毛被和内面无毛的萼片等特征,否定过去一些学者将其归并于C.hirsuta的意见,也将其作为C.hirsuta的一个变种处理。(4)描述了单性铁线莲组sect.Aspidanthera的一个特产马达加斯加岛的新亚组subsect.Insid iosae W.T.Wang和尾叶铁线莲亚组subsect.Connatae的一个特产非洲大陆的新系ser.Grandiflorae W.T.  Wang以及8新种、1新变种。(5)发现杨宗愈等(1991)报道的秀丽铁线莲C.grata Wall.在我国7省区 (西藏东部、云南、四川、贵州、湖北、湖南、江西)有分布所依据的8号标本均非C.grata,而分别是与此 种相近缘的5个种或变种。(6)发现了伏毛绣球藤C.montana var.brevifoliola Kuntze(原知分布于锡金和印度西北部)在我国西藏、尼泊尔、不丹和缅甸北部,缅甸铁线莲C.burmanica Lace(原知分布于缅甸和 泰国)在我国云南西南部,小木通C.armandii Franch.(原知分布于我国长江流域、越南)在缅甸北部和印 度东北部,以及俞氏铁线莲C.yui W.T.Wang(原知分布于我国云南西北部和西藏东南部)在缅甸北部 的新分布。  相似文献   

9.
对11个四倍体赖草属Leymus Hochst.物种的核型进行了研究,核型公式如下:沙生赖草L. arenarius (L.) Hochst., 2n=4x=28=18m+4sm+6st (4sat); 密穗赖草L. condensatus (J. Presl) A. Lve, 2n=4x=28=22m+4sm (2sat)+2st (2sat); 新生赖草L. innovatus (Beal) Pilg., 2n=4x=28=24m (4sat) +4sm (2sat);多枝赖草L. multicau  相似文献   

10.
为何Tutcheria championii Nakai (1940) 发表较晚, 却被《中国植物志》等志书作为正确学名;而 T. spectabilis (Champ. ex Benth.) Dunn (1908)这更早发表的名称却成了异名? 笔者在本文解释,根据《国际植物命名法规》,因T. championii这后出替代名发表时曾引用Camellia spectabilis Champ. ex Benth.,而主模式标本因此已包含在内,所以在Tutcheria属内,具相同主模式的T. spectabilis是合法名也具有优先权,应为正确学名。  相似文献   

11.
发现滇桂三相蕨Ataxipteris dianguiensis W. M. Chu & H. G. Zhou和多形叉蕨Tecataria polymorpha (Wall. ex Hook.) Copel.为海南新分布, 并为滇桂三相蕨指定了后选模式,讨论了燕尾叉蕨T. simonsii (Baker) Ching和中型叉蕨T. media Ching的异同,澄清了三叉蕨T. subtriphylla (Hook. & Arn.) Copel.和多形叉蕨的形态变异,把云南产狭基叉蕨T. polymorpha var. subcuneata Ching & Chu H. Wang处理为多形叉蕨的异名。至此,海南产叉蕨科植物为8属20种。  相似文献   

12.
Since the 19th century many botanists have studied the Chinese Cirsium and a great number of taxa or names has been reported,  of which many still need to be reviewed critically         This work is a preliminaxy result of study on Chinese species of Cirsium.  As many as 65 taxan or names in the literature are reduced to synonym in this paper.  The Cir- sium in China so far known comprises 49 species,  of which 9 are described as new,  1 is a new combination and 4 are new records in Chinese flora.   These new species are: C. subulariforme Shih,  S. muliense Shih,  C. fanjingshanense Shih,  C. periacanthaceum Shih, C. racemiforme Ling et Shih,  C. vernonioides Shih,  C. chrysolepis Shih,  C. tenuifolium Shih and the new combination is C. viridifolium (Hand. -Mazz.) Shih. The new records in China are C. serratuloides (L.) Hill.,  C. incanum (S. G. Gmel.) Fisch. ex MB.,  C. la- natum (Roxb. ex Willd.) Spreng and C. alatum (S. G. Gmel) Bobr.       The Chinese Cirsium is divided into 8 sections in the present paper,  of which 3 are new,  namely,  Sect.  Isolepis Shih,  Sect. Tricholepis Shilh and Sect. Hymenolepis Shih, and I is a new combination,  namely,  Sect. Spanioptilon (Cass.) Shih.      In addition,  a new species of the genus Alfredia,  A. aspera Slih,  is described.  相似文献   

13.
From standpoint of floristic division,  Sichuan is located in the middle part of Eastern Asiatic Region (Takhtajan 1978) or is the area where Sino-Himalayan Forest Subkingdom and Sino-Japan Forest Subkingdom meet (wu 1979).  Here exist many so- called Arcto-Tertiary elements and newly originated species or races.  In order to bring the light the origin and differentiation of Eastern Asiatic elements,  cytological investi- gation on plants of this region are very significant.  The materials of the following 5 species were collected on Mt.  Emei in Sichuan Province.  Voucher specimens are kept in CDBI.       1.  Toricellia angulata  Oliver var. intermedia (Harms) Hu       PMC meiotic examination revealed n = 12 at diakinesis (Pl. I fig. 9)       Toricellia,  consisting of 2 spp.,  is endemic to Eastern Asiatic Region.  Based on our result along with the report of Toricellia tiliifolia (Wall.) DC. (2n=24) by Kuro- sawa (1977),  we argue that the basic chromosome number of Toricellia is 12.  Many authors,  such as Airy-Shaw (1973),  Dahlgren (1975,  1977),  Takhtajan (1969,  1980), Thorne (1983),  have adopted Hu’s (1934) treatment erecting it as a monotypic family Toricelliaceae.  Its systematic position,  whether closer to Cornaceae than to Araliaceae or vice versa,  has been in dispute.  Cytologically it seems closer to Araliaceae,  as shown anatomically (Lodriguez 1971),  because the basic chromosome number of Cornaceae s. 1. is x=11,  9,  8 (Kurosawa 1977),  whereas that of Araliaceae is 12 (Raven 1975).       2.  Cardiocrinum giganteum  (Wall.) Makino       Somatic chromosome number,  2n=24 was determined from root-tip cells (Ph. I. fig. 8).       Cardiocrinum (Endl.) Lindl.,  consisting of 3 spp.,  is endemic to Eastern Asiatic Region.  C. giganteum (Wall.) Makino is distributed from Himalayan region to S. W. China.  The present report is in accord with the number reported by Kurosawa (1966) who got the material from Darjeeling of India.  However the karyotype of the present plant is slightly different from that given by Kurosawa.  In the present material,  the satellites of the 1st. pair of chromosomes and the short arms of llst.  pair of chromoso- mes are visibly longer than those of Kurosawa’s drawing (fig. 1,  2) The plants from Yunnan,  Sichuan and Hubei Provinces,  named as C. giganteum var. yunnanense (Leit- chtlin ex Elwes) Stearn,  differ slightly from those of Himalayan region also in outer morphological characters.  The taxon needs both cytological and taxonomical further studies.       3.  Disporum cantoniense  (Lour.) Merr.       PMC meiotic examination revealed n=8 at diakinesis (Pl. I. fig. 6)       This species is widely distributed from Himalayan region through Indo-China to our Taiwan Province and Indonesia. Three cytotypes (2n=14,  16,  30) were reported for the taxon including its variety,  var. parviflorum (Wall) Hara,  by various authors (Ha- segawa 1932,  Mehra and Pathamia 1960,  Kurosawa 1966,  1971 Mehra and Sachdeva 1976a).  Some authors consider D. pullum Salisb. and D. calcaratum D. Don as synonyms of D. cantoniense. So D. cantoniense may be a species aggregate with different extreme races.  Sen (1973a,  b.) reports that the somatic chromosome numbers of D. pullum and D. calcaratum from Eastern Himalayan region are 14,  16,  28,  30,  32.  He also discovered that chromosome alterations in species of Disporum involve not only the num- ber but the structure as well.  He found that in species of Liliaceae where the reproduc- tion is mainly vegetative,  polysomaty often occurs.  In China we have not only D. can- toniense and D. calcaratum but also D. brachystomon Wang et Tang which is similar to D. cantoniense var. parviflorum (Wall.) Hara.  These taxa need further critical studies.      4.  Paris fargesii Franch.      PMC meiotic examination revealed n=5+2B (Voucher no. 112) or n=5 (Voucher no. 62) at MI and AI (Pl. I. fig. 1. 4. 5.).  This is the first report for the species.  A bridge and a fragment were also observed at AI.      Paris polyphylla Smith is extraordinarily polymorphic species.  Hara (1969) re- gards all chinese extreme forms,  such as P. fargesii Franch.,  P. violacea Lévl.,  P. pube- scens (Hand. -Mzt.) Wang et Tang,  etc. as infraspecific taxa of P. polyphylla.  Need- less to say,  the various races of P. polyphylla Smith in China need further critical stu- dies and are good material for further study to understand the speciation.      5.  Reineckia carnea(Andr.) Kunth       Reineckia is a monotypic genus endemic to Eastern Asiatic Region.  In the present material somatic chromosome number in root-tip cells is determined as 2n=38 (Pl. I. fig. 7).  According to the terminology defined by Levan et al.,  the karyotype formula is 2n=28 m+10 sm.  The length of chromosomes varies from 14.28 μ to 5.5 μ. The idiogram given here (fig. 3) is nearly the same as that presented by Hsu et Li (1984). The same number has been previously reported by several authors,  Noguchi (1936),  Satô (1942), Therman (1956).  The karyotype is relatively symmetrical (2B,  accorling to the classi-fication of stebbins 1971) in accord with the opinion of Therman (1956).  相似文献   

14.
中国毛茛科植物小志(十五)   总被引:1,自引:0,他引:1  
 在本文中澄清了一些错误鉴定;一些学名证实不能成立,成为异名;对偏翅唐松草的种下分类 群做出修订,并给出新的区别特征;做出锐棱铁线莲系的分种检索表;对渐尖铁线莲群各种的亲缘关 系进行了初步讨论;描述了1新系,3新种,3新变种,2新变型;做出1新组合,4新等级,并拟出1新名;报道了拳距瓜叶乌头、星果草和直梗高山唐松草的国外分布。  相似文献   

15.
本文是对中国-喜马拉雅地区的原莴苣属植物提出的分类订正。是笔者前一篇文章《莴苣属订正 及亚洲大陆菊科植物二新属》的续篇。文中建立了两个新属,即毛鳞菊属Chaetoseris Shih和细莴苣属Stenoseris Shih;文末及文中提供了本文所涉及的一些属种的分属和分种检索表。  相似文献   

16.
This paper is the documentation of specimens and literature reffered to Atracty- lodes lancea (Thunb.) DC. etc. As a result, it is found that, in taxonomy of the genus Atractylodes, what represcents by four long-established names, i. e. Atractylodes lancea (Thunb.) DC., A. ovata (Thunb.) DC., A. chinensis (Bunge) Koidz. and A. lyrata Sieb. et Zucc., in fact, is the one and same species.  According to the law of priority in nomenclature, the first name should be given to Chinese drug “Cangzhu”, while theother three names have to be treated as its synonyms.  相似文献   

17.
 本文根据近四十年来积累的丰富标本材料,对盾蕨属Neolepisorus Ching分   类的正确与否进行了研究。  本属从原来只有3个种的一个小属发展到今天的   11个种的中等属,有力地说明了我国植物资源的丰富,并从一个侧面反映了四   十年代以来我国植物分类学研完取得了巨大进展。  特别有意义的是,这个属的   许多种各自显示着形态变异的多样性,即一个种的叶型往往从正常的全缘单叶   能发展为各种不同程度的畸形分裂,对它们分类上的鉴定造成一定的困难,同  时,对他们的形态发生的研究也提供了一个新课题。  相似文献   

18.
Having mixed extremely various  patterns of achenes  for a  long time in the genus Lactuca L., especially showed in the classification of it on the mainland of Asia, Lactuca  L.,  the  primary  unnatural genus,  becomes more nuclear in its limit.   The present paper makes a revision to attempt providing a clear cline between Lactuca L. and its relative genera.      On my opinion, only plants, represented by Lactuca sativa L., which have ovoid capitu- lum during its fruiting, numerous (7-25), yellow ligular florets and longitudinal 1-10 ribs or striae on each side of achenes, acute into filiform beak at its apex, should be defined as Lactuca L.      In view of the present concept of Lactuca L.,   another group of plants, embodied by Lactuca indica L., having its broadening, thin winged-margin of, 1-3 striae on each side of achenes,  black, dorsi-ventral compressed, acute into thick and short beak at its apex, evident- ly, should not be placed into Lactuca L., but be regarded as genus, i.e. Pterocypsela Shih, gen. nov. Pterocypsela Shih distributes in Eastern and southern Asia, where Lactuca L. does   not occur.  In China there is all of species, seven species, of Pterocypsela Shih.  They are P.   raddeana (Maxim.) Shih, P. indica (L.) Shih, P. elata (Hemsl.) Shih P. lacciniata (Houtt.)   Shih, P. triangulata (Maxim.) Shih, P. sonchus (Lévl.)  Shih and P. formosana  (Maxim.)   Shih, But in Mediterranean regions and Middle and Western Asia mainly distributes Lactu-   ca L., in which there are only seven species from western China, Xijiang autonomic district.   They are L. dolichophylla Kitam., L. sativa L., L. altaica Fisch. et Mey., L. serriola Torner,   L. dissecta Don, L. auriculata DC. and L. undulata Ledb.          With the combination of violet-purple ligular florets  non-ovoid  capitulum  during  its   fruiting, a little thick achenes, acuminate into longer. or short beak at its apex and 4-6 ribs   on each side of it, Mulgedium tataricum (L.) DC. is evidently different from Lactuca sativa L.   with combination of ovoid capitulum during its fruiting, yellow ligular florets and compres-  sed achenes, acute into filiform beak at its apex.  There seems to be no point in refusing Mu-  lgedium Cass. as a genus.  Strictly speak, Mulgedium Cass. seems to be reminiscent of Para-  prenanthes Chang (see bellow) without beak at the apex of its achenes.  In Hengduan moun-  tains and mountain range of Himalayas M. tataricum  (L.)  DC. discoveries its relative par-  tners. They are M. bracteatum (Mook. f. ex. C. B. Clarke) Shih, M. lessertianum (Wall. ex  C. B. Clarke) DC., M. monocephalum (Chang) Shih, M. umbrosum (Dunn) Shih, M. meridi-  onale Shih and M. polypodifolium (Franch.) Shih.         Having broadering and thickening margin and 4-7 striae on each side of achenes, grey,  dorsi-ventral compressed, truncate and beakless at its apex, Lactuca sibirica (L.) Benth. ex  Maxim.  (Sonchus sibiricus L.) is not only different from Lactuca sativa L. with the combi-  nation of yellow ligular florets and filiform beak at apex of its achenes, but also from the  genus Mulgedium Cass. with beak at apex of its achenes.  Therefore, Lagedium Sojak, establi-  shed by J. Sojak (1961), should be restored.  It should be point out that Lagedium Sojak is  monotypic genus excluding Mulgedium tataricum (L.) DC. with beak at the apex of its ache-  nes, non-marginated.   Lagedium Sojak widely distributes  in temperate  and  frigid  zone  of  northern hemisphere.  In our country, Lagedium sibiricum (L.) Sojak, sole species of the ge- nus, restricts its northeast region.        Paraprenanthes Chang, the new genus, established by Ch. Ch. Chang (1950) based on La- ctuca sororia Miq. and Lactuca yunnanensis Franch.  seems to be a distinct genus.  This ge- nus is characterized by 4-6 ribs on each side of achenes, black, fusiform, a little thick and beakless at its apex.  Besides above-mentioned two species, assigned by Chang, in forest of tro- pic and subtropic zones on the mainland of Asia there are many species with same structure in achenes like L. sororia Miq. and L. yunnanensis Franch.  The genus Paraprenanthes Chang seems to be reminiscants of Mulgedium Cass. and Lagedium Sojak, but differs from the former in its beakless achenes, from the later in its non-marginated  achenes  and 4-6 ribs on  each side of it.  In our country, there are all species of the genus known in the tropic and sub- tropic zones on the mainland of Asia.  They are P. sororia (Miq.) Shih, P. yunnanensis (Fra- nch.) Shih, P. longiloba Ling et Shih, sp. nov., P. heptontha Shih et D. J. Liou, sp. nov., P. prenanthoides (Hemsl.) Shih, P. pilipes (Migo) Shih, P. thirionii (Lévl.) Shih, P. sylvicola Shih., sp. nov., P. multiformis Shih, sp. nov., P. auriculiformis Shih, sp. nov. and P. sagitti- formis Shih, sp. nov.  相似文献   

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