贵州轮藻新分类群和新记录

本文报道采自贵州的轮藻植物,计有4个新种(平滑丽藻Nitella rasilis sp．nov., 沼泽丽藻N．paludosa sp．nov.,拟乳突丽藻N．pseudopapillata sp．nov． 贵州丽藻N．guizhouensis sp．nov．);1个新变种(奇异丽藻疏枝变种N．mirabilis var. libera var. nov.);3个新记录(笔状丽藻N．penicillata Braun缅甸轮藻Chara burmanica Pal,普生轮藻裸枝变种C．vulgaris var. gymnophylla (A．Br.) Nyman), 而拟松形轮藻 C. pseudohydropitys Imahori为大陆首次发现。     

中国叶腿青蜂属一新种(膜翅目,青蜂科)

记述采自广西九万大山的青蜂科1新种:广西叶腿青蜂Loboscelidia guangxiensis sp.nov..模式标本保存于浙江大学寄生蜂标本室.广西叶腿青蜂,新种Loboscelidia guangxiensis sp.nov.(图1～6)新种与采自越南的亚细亚叶腿青蜂L.asiana Kimsey,1988近似,但其体色暗褐色、额突前观呈梯形、颈突侧观近直角弯曲、前翅缺M脉与cu-a脉.正模♂,广西九万大山,2003-07-31,王义平采,No.20037702.副模1♂,广西九万大山,2003-07-31,王义平采,No.20037720.     

中国轮藻新分类群

本文报道了轮藻科2新种、1新变种、5个中国新记录：嫩江丽藻Nitella nenjiangensis sp. nov.,轮苞轮藻 Chara vertillibracteata sp. nov., 球状轮藻北京变种 Chara globularis Thuiller var. beijingensis var. nov., 腋生丽藻 Nitella axillaris Braun, 卷曲丽藻N. crispa Imah.,柔细丽藻N. gracillima Allan, 拟扇形丽藻不完全变种N. pseudoflabellata var. imperialis,阿鲁轮藻Chara arrudensis Mendes.     

广西轮藻的新分类群

本文报道了广西的轮藻新植物。在这些新分类群中,单顶丽藻(Nitella haplodactyla)为雌雄异株,能育小枝仅具1枚末射枝;短枝丽藻(N．brachyclema)和稀见丽藻(N．rarissima)的末射枝都是多细胞;拟扇形丽藻四强变种(N. pseudoflabellata var．tetradynana)的能育小枝为四强式的射枝;松状轮藻(Chara piniformis)的主要特征是具有单列式皮层、长的刺细胞和退化叶托的。     

广西唇柱苣苔属的一个新种

广西唇柱苣苔 新种 图版1 Chirita guangxiensis S.Z.Huang,sp.nov. Herba perennis erecta circa 0.5—1m alta,subcarnosa dense sericeo-pubescens,in sicco brunnescens.Folia opposita per paria inaequalia unum majus alterum minuslate elliptica,11—27(-30)cm longa,6—16(-19)cm lata,apice acuta,basicuneata inaequalia,supra viridia dense brevissimeque sericeo-pubescentia,subtuscinereoviridia dense longiusculeque sericeo-pubescentia,margine serrata,nervis late-     

多变丽藻细胞染色体的研究

当前,在国外已有越来越多的人进行藻类细胞学的研究,但在国内则很少有报道。近年来我们对多变丽藻的染色体进行了研究。多变丽藻(Nitella Varians Jao et Lee)属轮藻科(Characeae)丽藻属(Nitella)。由于它的小枝轮极不稳定,具有1—3列之特征,因而被称为多变丽藻。现将我们研究的方法和结果介绍如下。     

中国黑水虻属一新种(双翅目,水虻科)

记述了我国黑水虻属1新种,即广西黑水虻Nigritomyia guangxiensis sp.nov,.模式标本保存在中国农业大学昆虫博物馆.     

马蓝属一新种

<正> 广西马蓝 假马蓝(柳江) 新种 图 Strobilanthes guangxiensis S. Z. Huang, sp. nov. Similis S. yunnanensi Diels, sed foliis ellipticis, margine integris vel leviter undulatis, supra glabris, cystolithis densis; spices 4—8 cm longis, calycis segmentis brevioribus, corollis extus glabris differt.     

中国美广口蝇属(双翅目,广口蝇科)一新种及二新纪录种

记述采自中国广西大青山的美广口蝇属(双翅目,广口蝇科)一新种,广西美广口蝇Euthyplatystoma guangxiensis sp. nov..报道了2个中国新纪录种,多斑美广口蝇E.punctiplenum(Walker)(分布:云南)和明带美广口蝇E.rigidum(Walker)(分布:四川峨眉山).编制了中国美广口蝇属分种检索表.新种模式标本保存于中国科学院动物研究所,北京.     

土黄芪属一新种

<正> 广西土黄芪 新种 Nogra guangxiensis Wei, sp. nov. Species affinis N. grahami(Wall.) Merr., sed foliolis anguste oblongisvel longe lanceolati, utrinque laxe hirsutis, corollis flavidis, alis obovatoo-     

Some New Taxa of Nitella from Guangdong,China

Guangdong Province extends across the subtropical and tropical zones. With favorable climate and plentiful rainfall, this district is extremely rich in plants. However, the study on the Charophyta in this province is scanty. The specimens we identified were collected from 4 cities and 10 counties of the province. The result shows that there are abundant representatives of Chrophyta, especially in Nitella, in the province. In this paper, however, only reported are some new taxa of Nitella. The 2 new species are Nitella sessilis and N. guangdongensis; the 3 new varieties are Nitella flagelliformis var. conglomerata, N. brevidactyla var. hainanensis and N. pakistanica var. magniantheridii; and the 3 new records of distribution in China are Nitella bengalensis Kundu, N. madagascariensis Zanev. and N. tenuissima var. sanukensis Imah.     

A New Species of Nitella from Sichuan

In this paper a new species of Nitella, N. vermiformis, from Sichuan is reported. The new species is the similar to Nitella procera Han from Yunnan. But gametangia of the latter grow in every furcte, and fertile branchlets are similar to sterile ones. There are not central radial branchlets and accessory branchlets in first furcate branchlet; the membrane ofoospore is vermiform-processed.     

Some New Taxa of Charophyta in China

The authors examined specimens collected from Beijing, Hebei Province and North-east China. Two new species, one variety and five new records of the Characeae from China are reported in this paper. They are Nitella nenjiangensis sp. nov., Chara vertillibracteata sp. nov., C. globularis Thuiller var. beijingensis var. nov., Nitella axillaris Braun, N. crispa Imah., N. gracillima Allan, N. pseudoflabellata var. imperialis T. F. A., Chara arru-densis Mendes.     

Some New Taxa of Charophyta from Guangxi

Guangxi, Situated in the southern border area of China, is extremely rich in Charophytes. In this paper, however, reported are only new species and new varieties. Among the new taxa, Nitella haplodactyla has only one dactyl on the fertile branchlet, N. brachyclema and N. rarissima are provided with more than 4-celled dactyls, the fertile branchlet of N. pseudoflabellata var. tetradynana has tetradynamous rays, and Chara piniformis is characterized by thehaplostichous cortex, long spinecells, and rudimentary stipulodes.     

轮藻植物在澳大利亚的重新发现之探密

澳大利亚轮藻植物研究历史悠久,迄今约有95种被描记。在Wood(1972)对澳大利亚轮藻植物的修订研究中,一些种因为标本遗失或已损坏而未包括在内,其中有的种近年来又被重新发现。本文重点介绍Nitella hookeri A．Br．var．arthroglochin A．Br．,Lychnothamnus barbatus(Meyen)Leonh．和Nitella partita Nordst．的发现过程及其产地生态环境,探讨了季节性湿地对轮藻植物的保护意义。N．hookeri var．arthroglochin早在1854年就发现于澳大利亚,并于1887年再次作为澳大利亚特有物种而被记录,然而从此销声匿迹,直至1989年才再度问世,它重新出现的地点为新南威尔士州高海拔花岗岩风化土壤地区的季节性溪流中。L．barbatus则为R．D．Wood首次发现于1960年,嗣后一再搜寻并无踪迹,直到1996年才于昆士兰东南地区亚热带阵发性溪流中被再次发现。昆士兰中部干旱地区1889年一度见到的N．partita,也是近一百年后才在新南威尔士州西北干旱地区的季节性湿地再次发现。     

Materials for the Charaphyta of China

Reported in this paper are two new species, one new variety, and three new records of the Characeae collected in China. They are Nitella anhuensis sp. nov., Chara paucicarpa sp. nov., Nitella alleninda var. tenuireticulata var. nov., N. gracilliformis J. Grove., N. formosa T. F. Allen and Chara tenuispina A. Br.     

139 Taxonomic Re-Examination of Eight Species of Nitella (Charales, Charophyceae) from Asia, And Phylogenetic Relationships Within the Genus Based on rbcL and Atpb Gene Sequences

Eight taxa of Nitella, collected from Asia, were investigated using LM and SEM of the oospores and sequencing of rbc L gene to improve understanding of their taxonomic status. Our SEM observations demonstrated that the oospore morphology of six taxa – N. capitulifera (= N. acuminata f. capitulifera ), N. japonica (= N. furcata f. japonica ), N. tumulosa (= N. furcata f. tumulosa ), N. megaspora comb. nov. (= N. pseudoflabellata f. megaspora ), N. gracillima (= N. gracilis f. gracillima ), and N. axilliformis (= N. translucens f. axilliformis ) – is distinctly different from that of the species to which R.D. Wood assigned them as infraspecific taxa. Our rbc L sequence data showed that N. japonica is separated phylogenetically from N. furcata , N. tumulosa from N. furcata , N. megaspora from N. pseudoflabellata , and N. axilliformis from N. translucens . In addition, to re-examine the taxonomic system of Nitella proposed by R.D. Wood, who treated oospore wall ornamentations as a diagnosis at the infraspecific level, we carried out molecular phylogenetic analyses using the combined sequence dataset for atpB and rbc L genes of these eight species, as well as twelve species of Nitella previously studied. The combined sequence data resolved five robust clades within the subgenus Tieffallenia that were characterized by differences in oospore wall ornamentation. However, the species and sectional diagnoses of R.D. Wood, such as the form and cell number of dactyls in vegetative thalli, were variable within the clades. Therefore, R.D. Wood's taxonomic system appears unnatural, at least within the subgenus Tieffallenia .     

ANNUAL GERMINATION WINFOW IN OOSPORES OF NITELLA FURCATA (CHAROPHYCEAE)1

Oospores of Nitella furcata subsp. megacarpa (Allen emend. Wood) were collected from an oospore bank in the sediments of Lake George, New York. Incubated at constant temperatures, all or nearly all of the oospores germinated when exposed to a brief pulse of red light when the annual window of germinability was open. The window seems related to the annual cycle of sediment temperatures. It is open in spring and closes wit the onset of a secondary dormacncy in the summer. Oospores in storage follow a parallel path if held at 18°C, a summer equivalent temperature; the window remains open indefinitely if the oospores are held at 4°C. Attention is drawn to the similarity if the cyclic window of germinability in seeds of summer annuals and oospores of N. furcata.     

Some New Taxa and New Records of Charophyta from Guizhou

Guizhou is situated in the southwestern China and is very rich in algae However, our present knowledge of the Charophytes is scanty. Over 400 specimens were collected from 22 counties or cities and from them 41 species, 2 subspecies, 3 varieties were found. In addition to previously known species of this region, Nitella rasilis, N. paludosa, N. pseudopapillata and N. guizhouensis are new species, N. mirabilis var. libera is new variety, and N. penicillata, Chara burmanica, C. vulgaris var. gymnophylla are new records for China. In this paper, only the new taxa are reported.     

贵州茂兰鹬虻科一新种：（双翅目：短角亚目）

双翅目短角亚目(Brachycera)的鹬虻科(Rhagionidae)多为中小型昆虫。足细长,翅常具斑纹,腹部较长;生活在水域附近,喜在阴湿的环境、甚至小雨中活动。成虫和幼虫多为捕食性,有些种类在国际上已用作生物防治。鹬虻科世界已知约600种,我国过去只有外国学者记载过10种,其中9种在台湾,另1种为记载于东北的日本种。近年来,我们开展此科分类研究,已陆续报道了浙江、湖北、广西、云南、西藏、内蒙及