泛喜马拉雅地区铁线蕨属细叶铁线蕨系的分类学修订

在标本研究和野外考察的基础上,结合微形态分析结果和植物地理学资料,对泛喜马拉雅地区铁线蕨属细叶铁线蕨系进行丫分类学修订。研究结果表明该系植物囊群盖的形状、末回小羽片上缘锯齿的形态和鳞片微形态特征是物种划分的重要性状。承认泛喜马拉雅地区该系植物分布有7种和2变种,分别是陇南铁线蕨Adiantum roborowskii、肾盖铁线蕨A．roborowskiivar．robustum、毛足铁线蕨A．bonatianum、冯氏铁线蕨A．fengianum、长盖铁线蕨A．fimbriatum、白背铁线蕨A．davidii、长刺铁线蕨A．davidiivar．longispina、细叶铁线蕨A,venustum和西藏铁线蕨A．tibeticum。对三个分类学名称进行了归并,即将圆齿铁线蕨Adiantun breviserratum处理为长盖铁线蕨A．fimbriatum的异名,肾盖铁线蕨Adiantum erythrochlamys处理为A．roborowskii var．robustum的异名．无芒铁线蕨Adiantum bonatianum var．subaristatum处理为毛足铁线蕨A．bonatianum的异名。     

中国石斛属新发现

石斛为名贵中药,又是美丽的观赏兰花。我国云南石斛属资源非常丰富,在国产石斛种类中,有三分之二以上产于云南。广州兰圃于1966年自西双版纳引种了一批石斛属植物,华南植物园自1973年以来陆续由云南西双版纳、文山等地区采集了一批石斛属植物。在生物学特性观察和种类鉴定过程中,在其中发现了一些新分类群和分布新记录,现整理如下:     

荷叶铁线蕨等位酶分析初步研究

荷叶铁线蕨 ( Adiantum reniforme var.sinense)是铁线蕨科铁线蕨属肾叶铁线蕨的一个变种〔1〕,分布于重庆市万县、石柱等县的沿江近 1 0 0 km长的狭长地段 ,分布高度局限于海拔 80～ 430 m之间 〔2〕。受其自身生物学、生态学习性的局限和人为的破坏 ,该物种正濒于灭绝的边缘。三峡工程修建后 ,库区内1 75m线以下的地区将被淹没 ,将更加剧该物种的濒危程度。为了挽救这一物种已经采取了许多措施 ,迁地保护是其中的重要措施之一 ,中国科学院武汉植物研究所在这一方面已经做了一些工作 〔3～ 5〕。为了有效地实施迁地保护 ,保存该物种的大部…     

越南苦苣苔科石蝴蝶属植物随记暨国家级分布新记录

石蝴蝶属(Petrocosmea Oliv.)植物的现代分布与分化中心位于中国的西南山地以及周边国家和地区,如印度(阿萨姆邦)、缅甸、泰国、越南等也有分布。近年来,中国和中南半岛上各个国家和地区的新分类群和国家级新记录层出不穷,进一步加深了研究人员对中国和中南半岛植物区系以及该属植物在上述区域的多样性的理解。例如,滇黔石蝴蝶[Petrocosmea martinii (H. Léveillé)H. Léveillé]和丝毛石蝴蝶(P. sericea C.Y. Wu ex H. W. Li)曾被认为是中国的特有种,前者分布于贵州、广西北部和云南东南部,而后者仅见于云南东南部。该文报道了这两种石蝴蝶属植物的越南国家级分布新记录。这两个新记录种的发现,使得越南分布的石蝴蝶属植物种的数量上升到了5 种,这些新记录种的报道或暗示未来在与中国西南山地邻近的地区还将会有更多该属的新分类群或新记录有待发现。该文还同时提供了这两个国家级分布新记录物种的描述、图示、濒危等级现状评价以及目前所有越南已知分布的石蝴蝶属植物的检索表以备检索和核对。     

云南省兰科植物新记录

云南省是中国乃至世界兰科(Orchidaceae)植物最为丰富的地区之一,近年来随着调查研究工作的深入,发现了不少新属、新种、新记录属以及新记录种[1-10]。笔者近年来对云南南部和东南部植物区系进行调查,并通过标本鉴定和相关资料查阅,发现了4个云南新记录属和9个云南新记录种。其中,     

北京铁线蕨属孢子形态的研究

本文利用扫描电子显微镜辅以光学显微镜的方法,详细观察并描述了北京铁线蕨属4种即团羽铁线蕨、普通铁线蕨、掌叶铁线蕨、铁线蕨孢子的形态结构特征。讨论了各种间的差异,为铁线蕨属系统分类研究提供了孢粉学方面的依据。     

西双版纳石灰岩山地森林蕨类区系的初步研究

西双版纳位于云南南部,与老挝及缅甸接壤。根据调查,现已知西双版纳石灰岩山地森林中蕨类区系有蕨类植物１２７种（包括变种）,隶属于２４个科,５４个属,在该蕨类区系中,最大的科分别是水龙骨科,凤尾蕨科,铁角蕨科,铁线蕨科及三叉蕨科;最大的属分别为凤尾蕨属,铁角蕨属,铁线蕨属,石韦属及毛蕨属,该地蕨区系具有东南亚热带的性质,其分布区类型的组成是,热带分布或主产热带的科占总科数的７０％以上,热带分布的属占总     

中国云南纳板河国家级自然保护区苔藓植物研究

在野外调查和标本鉴定的基础上,首次报道了中国云南纳板河流域国家级自然保护区有苔藓植物59科157属385种3变种3亚种,包括中国大陆新记录种3种,云南新记录属2属,新记录种和亚种12种;西双版纳地区新记录科4科,新记录属12属,新记录种140种.同时,对优势科属种组成及生境类型进行了初步分析,为我国热带地区苔藓植物区系研究提供了丰富资料.     

云南西双版纳兰科植物

云南西双版式纳是我国兰科植物分布最集中的地区之一,经多年的野外考察和采集整理后,迄今计有96属335种和2个变种,有2个属为全国新记录,190种为西双版纳的新记录,其中50个种是全国新记录,21种为本区特有种,该地区的兰科种属类群远超过海南省而相当于台湾省。     

云南竹亚科一些属种的增订

报道了云南竹亚科新名称１个,新组合１个,新异名１个,发现１个不合格名称,１个属在云南分布的新记录和１个种在我国分布的新记录。同时讨论了单枝竹属和空竹属的地理分布。     

Low genetic differentiation betweenAdiantum capillusveneris L. andA. ogasawarense Tagawa (Adiantaceae), an endemic pteriodophyte of the bonin (ogasawara) islands

Genetic differentiation was examined betweenAdiantum capillus-veneris L. andA. ogasawarense Tagawa. A total of 136 individuals from two populations ofA. ogasawarense and three populations ofA. capillus-veneris were sampled. Allozymes encoded by 19 putative loci for nine enzyme systems were observed. The populations ofA. ogasawarense are genetically differentiated from those ofA. capillus-veneris; conspecific populations cluster together. However, genetic identity between two species was estimated to be 0.815, and indicates that the degree of allozyme differentiation is lower than those between endemic flowering plants and their progenitors. It is possible that the low genetic differentiation observed betweenA. ogasawarense andA. capillus-veneris results from a recent origin of the endemic species,A. ogasawarense.     

少花豆蔻，中国豆蔻属(姜科)一新记录种

报道了采自云南省西盟县的姜科狭义豆蔻属一中国新记录种：少花豆蔻(Amomum pauciflorum Baker)。该种与长柄豆蔻(A. longipetiolatum Merr.)形态上最为相似,但前者花冠裂片显著较宽,药隔附属体新月形而非3深裂,二者容易区别。文章对该种的形态特征和地理分布进行了补充描述,并提供了彩色图版,凭证标本存放于中国科学院西双版纳热带植物园标本馆(HIBTC)。     

中国锈革菌属研究.5.采自云南的两个新记录种

报道了采自云南省的锈革菌属(Hymenochaete)2个中国新记录种,即长矛锈革菌(H. contiformis)和红边锈革菌(H. rufomarginata)。前者的主要特点是解剖结构中无皮层和菌丝层,刚毛长且孢子大; 后者的主要特点是子实层具大量的侧丝,刚毛和孢子较小。提供了这两个种的野外标本照片、显微结构绘图以及详细的形态学描述,并给出了云南省锈革菌属30个种的检索表。     

New species of Peruvian Orchidaceae III

Sixteen new species are proposed in the generaAckermania, Dressleria, Epidendrum, Maxillaria, Oncidium, Rodriguezia, Sigmatostalix, andTrigonidium. All new species are illustrated.Maxillaria vittariifolia L. O. Williams is newly recorded for Peru. A key is provided forTrigonidium of Peru.Trigonidium loretoense Schltr. andT. peruvianum Schltr. are lectotypified.     

New hyalellids (Crustacea, Amphipoda, Hyalellidae) from Lake Titicaca

Two new species of hyalellid amphipods, Hyalella crawfordi and H. gauthieri, are described from Lake Titicaca; H. echinus (Faxon, 1876) is redescribed. The H. echinus group of species is newly proposed for these three species, and a group diagnosis is provided. A key to the three species in the group is provided Full article published online at http://www.senckenberg.de/odes/06-10.htm.     

Magnoliid reproductive organs from the Cenomanian-Turonian of north-western Kazakhstan:Magnoliaceae andIlliciaceae

Cenomanian-Turonian sediments from the Sarbay locality in north-western Kazakhstan have yielded a rich assemblage of plant fossils including well preserved flowers, fruits, and seeds of angiosperms. This work describes fossil seeds assigned to theMagnoliaceae and theIlliciaceae. Three new species of the extinct magnoliaceous genusLiriodendroidea, L. asiatica, L. costata, andL. tenuitesta, are established and new information on the previously described species,L. alata, is provided. TheLiriodendroidea seeds are closely similar to seeds of extantLiriodendron, but are distinguished in being much smaller and winged. A new genus and species,Illiciospermum pusillum, is established based on seeds with close similarity to those of the extant genusIllicium. The seeds are small, anatropous and exotestal with outer epidermis of testa forming a palisade layer. The facets of the palisade cells have deeply undulate anticlinal walls. The micropyle area is seen on the outer integument as a transverse slit placed on a raised strophiole-like structure close to the hilum. TheIlliciospermum seeds represent the first unequivocal record of theIlliciaceae in the Cretaceous. Another seed of possible illiciaceous affinity is described as aff.Illiciospermum sp.     

中国蜾蠃属两新种及西南地区种类检索表（膜翅目：胡蜂科：蜾蠃亚科）

记述中国蜾蠃属Eumenes Latreille 2新种:锈触蜾蠃E. ferrugiantennus sp. nov.和黑盾蜾蠃E. nigriscutatus sp. nov.。锈触蜾蠃E. ferrugiantennus与E. placens Nurse, 1903近似,但前者体覆锈红色斑点及大的刻点,腹部第2节背板中部有1条黑色斑纹,雌性整个触角锈红色。黑盾蜾蠃E. nigriscutatus与分布于台湾的E. tosawae tosawae Soika, 1941近似,但前者覆有彩色斑纹,头胸腹均覆有较大的刻点,腹部第 2 节背板前端部有 1 较深的凹陷以形成 1 明显的翘状结构。文中还提供了西南地区种类检索表。新种模式标本保存于重庆师范大学昆虫与分子生物学研究所。     

中国簇角飞虱属一新种并附分种检索表（半翅目：蜡蝉总科）

记述中国簇角飞虱属Belocera Muir 1新种:拟褐额簇角飞虱B. parafuscifrons sp. nov.,本新种与其近似种褐额簇角飞虱B. fuscifrons Chen, 2002的区别在于:阳茎直,端向略狭,端部具4个刺状突起,其右侧端突基部具1小齿;阳基侧突侧观端部2/5强烈弯曲,外端角角状。文章提供了成虫及雄、雌性外生殖器特征图,编制了属的分种检索表。研究标本保存在西北农林科技大学昆虫博物馆。     

New species, nomenclatural changes and lectotypifications in Neotropical Lepidagathis Willd. (Acanthaceae)

Summary  Taxonomic and phylogenetic studies of the Neotropical genus Lophostachys showed that it is congeneric with Lepidagathis. The following new combinations of species previously described under Lophostachys are proposed: Lepidagathis chiapensis (Acosta) Kameyama, L. cyanea (Leonard) Kameyama, L. guatemalensis (Donn. Sm.) Kameyama, L. laxifolia (Nees) Kameyama, L. montana (Nees) Kameyama, L. nemoralis (Mart. ex Nees) Kameyama, L. soconuscana (T. F. Daniel) Kameyama, and L. uxpanapensis (Acosta) Kameyama. Five new species are described: Lepidagathis callistachys, L. cuneiformis, L. meridionalis, L. paraensis and L. wasshausenii. Three lectotypes are also designated. A key to the Neotropical secundiflorous species is provided.     

A newLeptographium species associated withTomicus piniperda in south-western China

Tomicus species (Coleoptera: Scolytidae) are serious pests of pines with a wide distribution in Europe, Asia and America. In Yunnan, south-western China,T. piniperda has destroyed more than 0.5 million ha ofPinus yunnanensis in the past 15 years. A blue stain fungus belonging to the genusLeptographium is associated with both the shoot-feeding and trunk-attacking stages of the beetle's life cycle. The fungus is morphologically similar to the anamorph ofOphiostoma crassivaginatum and toL. pyrinum, which are both characterised by short robust conidiophores and hyphae covered by a granular layer. Both these species have been isolated from conifers and are associated with insects. After comparing the fungus fromT. piniperda with similarLeptographium species, using light and scanning electron microscopy, we concluded that it represents a new taxon, which is described here asL. yunnanense sp. nov.