数学生态学国际讨论班在意大利举行

1982年11月16日至12月10日,国际理论物理中心在意大利的里雅斯特(Trieste)城举办了为期四周的数学生态学秋季讨论班。会议由美国的T.Hallam、S.Levin教授主持,国际上一些著名的数学生态学家如R.Anderson、J.Beddington、J.Cohen、J.Conrad、K.Dietz、L.Gross、A.Hastings、D.Ludwig、R.May、R.Nisbet、A.Okubo、L.Ricciardi、L.Segel、F.Scudo及M.Turelli等在这次会议上讲     

库恩菇属一新组合种(国内新记录)

本文报导了A.H.Smith和L.R.Hesler1968年命名的Pholiota conica A.H.Smith et L.R.Hesler在我国的新记录, 并根据R.Singer1975年的分类系统进行了新组合Kuehneromyces conicus(A.H.Smith et L.R.Hesler)J.B.Wang et Z.B.Chen comb.nov.     

斑痣盘菌科一新种及一新组合

报道斑痣盘菌科的两个寄生种,即生于茶树Camelliasinensis(L.)Kuntze枝梢上的硬湿皮盘菌新种HypoheliondurumY.R.Lin,C.L.Hou&S.J.Wangsp.nov.和生于青杄PiceawilsoniiMast.针叶上的线孢小沟盘菌新组合Lirulafiliformis(Darker)Y.R.Lin&S.J.Wangcomb.nov.。湿皮盘菌属HypohelionJohnston同时为中国新记录属。对此二种进行了汉文描述、图解和讨论,新种附有拉丁文特征简介。供研究标本保藏于安徽农业大学森林保护教研室(AAUFP)。     

建议进一步阅读的书刊

1、一般教科书 Lehninger,A .L.(2975),Bioehe。￡冬tr夕,Znd edit三on,Worth Pt:blishers,New York. Morris,J.G.(1974),A Biolo夕‘s考sPh夕、ie:IC几e。玄str夕,2。改editio:,Ed,ard A rnold,London. 5 tanier,R.Y.,Adelburg,E.A.and ingraham,J.L.(1977),G。。。ral对‘ero- biolo夕y,4th edition,Prentiee Hall,New Jersey.2.专门读物 Barrett,J.and Lemberg,R.(1973),C夕toeh,ooe:,Aeademie Press,London. Chappell,J.B.(2977),ATp,Carolina Biology Readers,Burlington Gregory,R.P.F(1974),B‘Ooh:。￡str夕o…     

四川杜鹃花属三个新异名

将我国四川杜鹃花属Rhododendron L.植物2个种和1个亚种（R.decorum Franch. ssp.cordatum Hu,R.xichangense Z.J.Zhao及R.davidsonianum Rehd.&Wils.）处理为新异名,并作了相应的讨论。     

海南植物新资料(Ⅲ)

报道了海南植物区系新记录4种,分别为兜唇带叶兰[Taeniophyllum pusillum(Willd.)Seidenf.Ormerod]、灰背清风藤(Sabia discolor Dunn)、长脉清风藤(S.nervosa Chun ex Y.F.Wu)及茴香砂仁[Etlingera yunnanensis(T.L.WuS.J.Chen)R.M.Smith]。     

火炭母的一个新异名及其系统位置初探

该文将铺地火炭母(Polygonum chinense L. var. procumbens Z. E. Zhao et J. R. Zhao)处理为火炭母原变种(Persicaria chinensis var. chinensis)的异名,并讨论了火炭母在命名上的问题,及其系统学位置。     

分布于日本和中国的鹅观草及其杂种的形态学和细胞学研究

本文对分布于日本的Agropyron tsukushiense (Honda) Ohwi var. transiense (Hack.) Ohwi (2n=6x=42)和分布于中国的Roegneria kamoji Ohwi (2n=6x=42)及其杂种F_1(2n=6x=42)进行了形态学及细胞学的研究,并同时探讨了亲本种的亲缘关系。总体来看,亲本材料之间在形态上虽有差异但并不十分显著。杂种F_1的形态特征介于其父、母本之间。在减数分裂过程中,亲本种和杂种F_1的染色体配对行为均十分正常。但在检查了大量的成熟花粉和穗状花序之后,发现杂种F_1有部份不育现象。上述研究结果表明A. tsukushiense var. transiens的三个染色体组与R. kamoji的三个染色体组同源。结合形态学和育性等方面的研究资料,作者认为上述两个材料仍应属于同一分类等级。但必须指出,由于长期的地理隔离,他们之间产生了一定的形态变异和生殖障碍。按照国际植物命名法规(ICBN)上述两个材料应组合为:Roegneria tsukushiensis (Honda) B. R. Lu, Yen et J. L. Yang及其变种var. transiens (Hack.) B. R. Lu, Yen et J. L. Yang comb. nov.     

中国蒿属植物新资料(Ⅳ)

本文补充了中国蒿属植物新资料,即太白山蒿A. taibaishanensis Y. R. Ling & C. J. Humohries, sp. nov.;吉隆蒿A. jilongensis Y. R. Ling & C. J. Humphries, sp. nov.;昌都蒿A. orientali-xizangensis Y. R. Ling & C. J. Humphries, sp. nov.;贡山蒿A. gongshanensis Y. R. Ling & C. J. Humphries, sp. nov.。     

青海仲彬草和黑药仲彬草的生物系统学研究

黑药仲彬草Kengyilia melanthera(Keng)J．L. Yang,Yen et Baum和青海仲彬草K．kokonorica (Keng)J.L．Yang,Yen et Baum是分布于我国西部的两种多年生六倍体植物。将其分别与鹅观草 Roegneria kamoji Ohwi(2n=42,StStHHYY)、糙毛仲彬草K．hirsuta(Keng)J．L. Yang,Yen et Baum (2n=42,PPStStYY)进行了杂交;对亲本及杂种F_l代花粉母细胞减数分裂中期I染色体配对行为进行 了观察。杂种F1减数分裂染色体配对平均构型分别为：R．kamoji×K．melanthera,18.201+11.74 Ⅱ 十0.09Ⅲ十0.01V;K．hirsuta×K．melanthera,1.06Ⅰ十20.47Ⅱ;R．kamoji×K．kokonori- ca,19.36Ⅰ十11.26Ⅱ十0.04Ⅲ;K．hirsuta×K．kokonorica,2.46Ⅰ十19.44Ⅱ 十0.14Ⅲ十0.06 Ⅳ。根据以上结果,并结合形态特征,将黑药仲彬草和青海仲彬草从鹅观草属拟冰草组Roegneria sect．Paragropyron Keng中组合到仲彬草属Kengyilia Yen et Yang更为恰当,而不应划分到披碱草属E-lymus L．或偃麦草属Elytrigia Desv．中。     

The publication and typification of Sir James Edward Smith's lichens in English Botany

A total of 391 lichens were written up in Smith's English Botany , of which 57 were new. All were illustrated by James Sowerby. The copyright dates are given, which should be accepted as those of publication. They range from 1793 until 1814, and paper watermarks show that reprintings occurred until c . 1818. The locations of the type specimens are given, many of which are part of the BM Botany Library, mounted together with Sowerby's original English Botany drawings, and therefore often overlooked. Their current taxonomic position is evaluated. Only 11 of the 57 new lichens have been placed in synonymy, which indicates that Smith was an excellent lichen taxonomist. Caloplaca borreri J.R.Laundon is a new name for Lepraria ochracea Turner & Borrer ex Sm., whilst Herteliana gagei (Sm.) J.R.Laundon is a new combination with priority over H. taylorii P.James, and Trapelia glebulosa (Sm.) J.R.Laundon replaces T. involuta (Taylor) Hertel. Species requiring author corrections are Caloplaca cerina (Hedw.) Th.Fr., Enterographa elaborata (Leight.) Coppins & P.James, Lecidella pulveracea (Flörke ex Th.Fr.) P.Syd., and Parmelia borreri Turner. Lichen daedaleus Sm. pre-dates Lecidea sorediata Ach. by 4 years, but has been proposed for rejection in order to retain the established name Pyxine sorediata (Ach.) Mont. Eight names remain undetermined, chiefly fungi in Spiloma.   © 2005 The Linnean Society of London, Botanical Journal of the Linnean Society , 147 , 483–499.     

A taxonomic revision of the North American species of Lepraria s.l. that produce divaricatic acid, with notes on the type species of the genus L. incana

The divaricatic acid-producing populations of Lepraria in North America north of Mexico are revised with traditional morphological characters, chemistry, ecology, biogeography, and ITS1, 5.8S, and ITS2 sequence data. Three taxa are accepted: L. cryophila, L. hodkinsoniana sp. nov. and L. pacifica sp. nov. Both Lepraria crassissima and L. incana are excluded from the study area. Noncryptic, semicryptic and fully cryptic species concepts in Lepraria are discussed with emphasis on the practical integration of molecular characters into taxonomic frameworks based on non-molecular characters.     

矮石蕊在东亚的地位

中国和日本有关具粉末状粉芽的矮石蕊(Cladonia humilis)的报导大多数实际上是指本文中描述的新种,黑氏石蕊(Cladonia kurokawae Ahti & S. Stcnroos).其特征是杯体深裂,含有黑茶渍素和富马原岛衣酸.真正的矮石蕊在中国和日本是很少见的;日本的种类中,含有黑茶渍素和波衣酸的两个化学型都存在.     

Notes on <Emphasis Type="Italic">Lepraria</Emphasis> s.l. (Lecanoromycetes,Ascomycota) in North America: New species,new reports,and preliminary keys

Six new species of Lepraria are described from North America: L. barbatica, L. cryophila, L. disjuncta, L. moroziana, L. terricola, and L. xanthonica. Lepraria torii is discussed and its range extended to include boreal eastern North America. Lepraria aurescens is reported as new to North America from Florida. Preliminary keys to the genus in North America are presented.     

Dissociation and horizontal transmission of codispersing lichen symbionts in the genus Lepraria (Lecanorales: Stereocaulaceae)

Lichenized fungi of the genus Lepraria lack ascomata and conidiomata, and symbionts codisperse by soredia. Here, it is determined whether algal symbionts associated with Lepraria are monophyletic, and whether fungal and algal phylogenies are congruent, both of which are indicative of a long-term, continuous association between symbionts. The internal transcribed spacer (ITS) and part of the actin type I locus were sequenced from algae associated with Lepraria, and the fungal ITS and mitochondrial small subunit (mtSSU) were sequenced from fungal symbionts. Phylogenetic analyses tested for monophyly of algal symbionts and congruence between algal and fungal phylogenies. Algae associated with Lepraria were not monophyletic, and identical algae associated with different Lepraria individuals and species. Algal and fungal phylogenies were not congruent, suggesting a lack of strict codiversification. This study suggests that associations between symbionts are not strictly maintained over evolutionary time. The ability to switch partners may provide benefits similar to genetic recombination, which may have helped this lineage persist.     

CALOPLACA MARITIMA,A MISUNDERSTOOD SPECIES IN WESTERN EUROPE

Caloplaca maritimaB. de Lesd. is a marine to maritime species occurring in western Europe. It was first described as a variety ofC. citrina(Hoffm.) Th. Fr., but in 1953 was transferred to specific level. Since thenC. maritimahas been more or less forgotten and/or misunderstood, mainly due to confusion withC. ruderum(Malbr.) J. R. Laundon,C. interfulgens(Nyl.) J. Steiner, andC. marina(Wedd.) Zahlbr. The present paper reports on the existence ofC. maritimaand clarifies its status in relation toC. marinaand to other related species. A map of the presently known distribution is presented and the species is depicted. Lectotypes forCaloplaca citrinavar.maritimaC. citrinavar.maritimaf.laevigataare selected.     

Estudio quimiotaxonómico del género Ramalina Ach. (Lecanorales,Ascomycotina) en Galicia (NW de España)

A morphological and chemical study of the lichen genera Ramalina Ach. in Galicia (NW of Spain) is studied. 9 species and 18 chemotypes are presented. Ramalina lacera (With) Laundon is reported for the first time in Galicia.     

CHEMICAL VARIATION INLEPRARIA EBURNEA

Lepraria eburneais shown to comprise three morphologically indistinguishable chemotypes, containing either protocetraric acid, psoromic acid, or neither substance, in addition to alectorialic acid. The holotype ofL. frigidacontains protocetraric acid and alectorialic acid, and is thus united withL. eburneaunder the latter name.