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1.
报道了贡嘎山鳞毛蕨属一新种─—贡嘎鳞毛蕨(Dryopterisgonggaensis)和该属的2个四川新记录种。  相似文献   

2.
云南凤尾蕨属一新种   总被引:1,自引:0,他引:1  
邓莉兰 《植物研究》1996,16(4):423-425
凤尾蕨属一新种—菜阳河凤尾蕨(PteriscaiyangheensisL.L.Dengsd.nov.).  相似文献   

3.
本文报道寄生在鳞毛蕨科(Dryopteridaceae)卵果蕨(DryopterispolypodoidesFee)上的尾孢菌属一新种-鳞毛蕨尾孢(CercosporadryopteridisY.L.Guo.sp.nov)尾隐菌属真菌在鳞毛蕨科是首次报道。鳞毛蕨尾孢叶斑角状至不规则形,灰白色至浅黄褐色,子实体主要生在叶背面,分生孢子梗单生或2~12根簇生,青黄褐色至中度褐色,顶部色泽较浅,宽度不规  相似文献   

4.
雅鲁藏布江大拐弯地区蕨类植物科属区系特征分析   总被引:4,自引:0,他引:4  
雅鲁藏布江大拐弯地区蕨类植物区系共含45科、108属。主要科为鳞毛蕨科Dryopteridaceae(80/5,种数/属数)、水龙骨科Polypodiaceae(65/14)、蹄盖蕨科Athyriaceae(45/11)、铁角蕨科Aspleniaceae(23/3)、中国蕨科Sinopteridaceae(19/6)、金星蕨科Thelypteridaceae(18/9)、凤尾蕨科Pteridaceae(13/2)、卷柏科Selaginelaceae(12/1)和膜蕨科Hymenophylaceae(11/3)。主要属是耳蕨属Polystichum,鳞毛蕨属Dryopteris,铁角蕨属Asplenium,蹄盖蕨属Athyrium等系统发育上较高级的类群;无典型的特有属,可认为它是随青藏高原隆起而形成的较年轻的蕨类区系。其热带成分科属虽多(科占622%,属占676%),但优势科、优势属均为广布类型。本区蕨类植物的起源是古老的热带亚洲成分。  相似文献   

5.
贡嘎山蕨类植物区系的特点   总被引:8,自引:1,他引:7  
贡嘎山蕨类植物区系共含40科,93属,399种,最主要的是耳蕨属Polystichum,鳞毛蕨属Dryopteris,蹄盖蕨属Athyrium以及水龙骨科Polypodiaceae等系统演化上较高级的类群,所含的种子是喜马拉雅和中国西南当地分化的种;其特有成分多为新特有属,可认为它是随青藏高原隆起而形成的较年青的蕨类区系,热带属在本区数量多而种类少,在山上河可与北温带种类并存。贡嘎山处于蕨类物种东  相似文献   

6.
粗茎鳞毛蕨杀虫成分   总被引:1,自引:0,他引:1  
粗茎鳞毛蕨杀虫成分王润华(江西农业大学植保系330045)一、名称:粗茎鳞毛蕨(DryopteriscrassirhizomaNakai)为鳞毛蕨科鳞毛蕨属植物,父名东北贯众、大贯众、野鸡膀子。二、形态特征:根状茎直立,连同叶柄基部密生褐棕色、卵状披...  相似文献   

7.
本文提议将蕨盲蝽属Bryocoris Fallen分为两个亚属:蕨盲蝽亚属subg.Bryocoris Fallen和锥喙蕨盲昃亚属subg、Cobalorrhynchus Reuter(stat.nov.)。文中记载此属的中国种类共13种,包括8个新种:卜氏蕨盲蝽B.bui sp.nov.(正模♂,云南绿春),凹北蕨盲蝽B.concavus sp.nov.(正模♂,云南云龙),李氏蕨盲蝽B.li  相似文献   

8.
中国鳞毛蕨属泡鳞亚属的分类研究   总被引:2,自引:0,他引:2       下载免费PDF全文
陆树刚   《广西植物》1999,19(2):105-118
鳞毛蕨属DryopterisAdans.泡鳞亚属SubgenusErythrovariae(H.Ito)Fraser-JenkinsinBul.Br.Mus.Nat.Hist.Bot.14(3):195.1986.Type:Dryopterisery...  相似文献   

9.
东北蕨类植物配子体发育的研究:Ⅶ.金星蕨科   总被引:1,自引:0,他引:1  
包文美  王全喜 《植物研究》1994,14(4):409-415
本文研究了金星蕨科的2属,各属中1种即卵果蕨(PhegopterispolypodoidesFee)和沼泽蕨(Thelypterispalustris(Salib)Sochott)的配子体发育全过程,比较了该2种的特征,以表明秦仁昌(1963)将它们分为2属的合理性。并观察到印果蕨配子体后期,中脉区域出现细胞壁由螺纹加厚的维管细胞,连成维管系统。  相似文献   

10.
九种蹄盖蕨科植物配子体的酯酶同工酶分析   总被引:5,自引:1,他引:4  
林孝辉  傅桂荣 《植物研究》1996,16(1):100-107
本文培养了蹄盖蕨科9个种即中华蹄盖蕨(Athyriumsinense)带岭蹄盖蕨(A.dalingense)、多齿蹄盖蕨(A.multidentatum)(包括青柄和紫柄2种带岭蹄蕨类型)、东北蛾眉蕨(Lunathyriumpycnosorum)、朝鲜介蕨(Dryoathyriumcoreanum)、山冷蕨(Cystopterissudetica)、假冷蕨(Pseudocystopterisspinulosa)、欧洲羽节蕨(Gymnocarpiumdryopteris)和黑鳞短肠蕨(Alantodiacrenata)的配子体为材料,进行酯酶同工酶的分析,以表明它们的种间差异,其中多齿蹄盖蕨的青柄和紫柄两种类型的酶谱存在明显差异,应考虑紫柄为多齿蹄盖蕨的变型。  相似文献   

11.
Trichomanes vamana, a new species of filmy fern from South India is described and illustrated. Key to South Indian species of Trichomanes subg. Didymoglossum sect. Microgonium and affinities of this taxon with T.mindorense are discussed  相似文献   

12.
Carlos Sánchez 《Brittonia》2017,69(4):482-503
This paper presents an up-to-date list of the ferns and lycophytes of Cuba. The list contains 599 species in 131 genera and 37 families. In total, Cuba harbors 93 endemic species (17 lycophytes and 76 ferns) that represent a 15.5% of the total species of ferns and lycophytes. For each taxon the distribution in Cuba is given according to three phytogeographical subprovinces: Western Cuba, Central Cuba, and Eastern Cuba. The following new combinations are made: Amauropelta balbisii var. longipilosa, Amauropelta piedrensis var. heterotricha, Amauropelta scalpturoides var. glabriuscula, Christella hispidula var. inconstans, Cyathea × acunae, Didymoglossum caluffii, Didymoglossum micropubescens, Goniopteris alata var. subpinnata, Goniopteris sclerophylla var. latifolia, Pteris hexagona var. multifida . A new name, Goniopteris moranii, is given for Thelypteris guadalupensis. New records reported herein for Cuba are Megalastrum macrotheca, Polystichopsis argillicola, and Pteris propinqua.  相似文献   

13.
The filmy ferns of the tribe Trichomaneae, synonymous with Tichomanes s.L., show various constructions of their root system that correspond to different growth forms as well as ecology. Most terrestrial species possess a short erect shoot with numerous thick roots, whereas epiphytic species have a long creeping rhizome that may develop a few thin roots. An evolutionary progression from ferns with well-developed roots to ferns without roots is postulated. Rootless species occur in two monophyletic groups, subgen. Crepidomanes and subgen. Didymoglossum. The results are summarized in a new classification for the tribe. Secondary simplification, e.g. loss of roots, is discussed as an adaptive trait in epiphytic plants. Transformed structures such as root-like shoots and adhesive hairs are observed in rootless taxa and their evolutionary significance is briefly discussed. Climbing filmy ferns are recognized as possible closely related species based on the similarities in their root systems.  相似文献   

14.
柽柳属和水柏枝属植物化学分类的研究   总被引:11,自引:2,他引:9  
运用植物化学分类学的实验方法,即薄层层析和紫外吸收光谱对柽柳属(Tamariax Linn)和水柏枝属(Myicaria Desv)的4种植物进行了分析测定,提出了柽柳属和水柏枝属的植物化学分类检索表,并对存有疑问的白花柽柳(T.albiflonum)进行了植物化学方面的分析鉴定。  相似文献   

15.
湖南的新记录植物(六)   总被引:14,自引:0,他引:14  
报道了湖南植物分布新记录,其中新记录属2个,即假木豆属(Dendrolobium(Wight et Arn.) Benth.)和排钱树属(Phyllodium Desv.);新记录种20个,即鹰爪花(Artabotrys hexapetalus (Linn. f.) Bhandari)、岩生碎米荠(Cardamine calcicola W. W. Smith.)、山芥碎米荠( Cardamine griffithii Hook. f. et Thons.)、白花碎米荠(Cardamine leucantha (Tausch) O. E. Schulz)、紫彩绣球(Hydrangea sargentiana Rehd.)、狭叶黄檀(Dalbergia stenophylla Prain)、假木豆(Dendrolobium triangulare (Retz.) Schindl.)、排钱树(Phyllodium pulchellum (L. ) Desv.)、华野豌豆(Vicia chinensis Franch.)、绿萼凤仙花(Impatiens chlorosepala Hand.-Mazz.)、岩谷杜鹃(Rhododendron rupivalleculatum Tam.)、革叶铁榄(Sinosideroxylon wightianum (Hook. et Arn.) Aubr.)、宁波木犀(Osmanthus cooperi Hemsl.)、天人草(Comanthosphace japonica (Miq.) S. Moore)、华南野靛棵(Mananthes austrosinensis (H. S. Lo) C. Y. Wu et C. C. Hu)、东亚磨芋(Amorphophallus kiusianus (Makino) Makino)、齿唇兰(Anoectochilus lanceolatus Lindl.)、圆叶石豆兰(Bulbophyllum drymoglossum Maxim. ex Okubo)、毛杓兰(Cypripedium franchetii E. H. Wilson)、绿花斑叶兰(Goodyyera viridiflora (Bl.) Bl.);新记录变种1个,即异果崖豆藤(Millettia dielsiana Harms var. heterocarpa (Chun ex T. Chen)Z. Wei).  相似文献   

16.
The genus Tribolium Desv. consists of nine species, i.e., T. utriculosum (Nees) Renv., T. ciliare (Stapf) Renv., T. echinatum (Thunb.) Desv., T. hispidum (Thunb.) Desv., T. acutiflorum (Nees) Renv., T. obliterum sensu Davidse, T. glomeratum sensu Davidse, T. uniolae (L.f.) Renv., and T. brachystachyum (Nees) Renv. The genus has a basic chromosome number of 6, and from diploid to hexaploid specimens have been examined. Precocious segregation of metaphase I bivalents were observed in four species. Multivalent formation results in unequal chromosome segregation during anaphase I, and several cells with an 11–13 chromosome distribution have been observed. The presence of univalents and anaphase I bridges in all T. brachystachyum specimens suggests a hybrid origin for the species. B-chromosomes were present in specimens from four species. The B-chromosomes are similar to the euchromosomes with the exception that they do not participate in meiosis. The B-chromosomes have a possible isochromosome origin. The cytogenetic evidence presented supports the combination of Plagiochloa and Lasiochloa into Tribolium and indicates that the genus is closely related to Urochlaena, whereas it is not closely related to Prionanthium.  相似文献   

17.
由于在中药中的广泛应用,近年来对豆科Leguminosae山蚂蝗属Desmodium Desv.植物的研究已成为热点。山蚂蝗属植物的化学成分主要包括黄酮类、生物碱类、萜类、甾醇类、烷类及各种烷衍生物等,具有抗氧化性、抗炎、镇痛解热、抗菌、抗虫、抗心脑血管疾病等药理活性。本文对山蚂蝗属中小槐花、广东金钱草、三点金、小叶三点金、假地豆、大叶山蚂蝗、饿蚂蝗等药用植物的研究进行总结,综述其化学成分及生物活性的研究进展,旨在为该属植物的进一步研究与利用提供参考。  相似文献   

18.
The spores of seven Cheilanthes Sw. species that grow in the Northwest Region of Argentina were studied with LM, SEM and TEM.

They were: Cheilanthes margínala H. B. K., C. micropteris Sw., C. myriophylla Desv., C. notholaenoides (Desv.) Weath., C. pilosa Gold., C. poeppigiana Mett. ex Kuhn, and C. pruinata Kaulf.

C. volcanensis de la Sota, mentioned for the region, was not included because all the collected material was sterile or immature.

The equatorial diameter is not useful in distinguishing species because of the interspecific variability of such species as C. micropteris, C. poeppigiana and C. pruinata. In other cases interspecific variation overlaps.

All the species analysed here have one basic pattern of structure: a homogeneous, smooth exospore and a sculptured perispore.

The perispore has two layers: an innermost one, granular, compact and an outermost one, reticulate with or without an outer lamella. The outermost layer constitutes the greatest part of the perispore.

Five sculpture groups were distinguished: rugulose, ridged, cristate, cristate-reticulate and tridimensionally reticulate.

One new type of sculpture is mentioned in Cheilanthes: ridged.  相似文献   

19.
Morphofogical studies of Stenochlaena tenuifolia (Desv.) Moore have shown that the inter-gametophytic mating system, as in most Blechnaceae, is based on an initial prolonged arche-goniate condition followed by the formation of antheridia, with a resultant tendency towards outbreeding and the production of heterozygous sporophytes. Subsequent genetic studies indicate that certain sporophytes of this species are heterozygous for lethal genes.  相似文献   

20.
In Moscow oblast, Thorea hispida (Thore) Desv. was first recorded at the beginning of the 20th century. Subsequently, T. hispida was found in 2004 in Moscow River within the territory of Moscow, where it still occurs. This species is included in the Red List of the Russian Federation, the Red List of Moscow oblast, and the Red Lists of some European countries. The new data on the distribution of T. hispida in Moscow River is presented in the paper, and some problems concerning the morphology and conservation status of this species are discussed.  相似文献   

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