深圳拟兰，中国兰科一新种

对兰科新种深圳拟兰（Apostasia shenzhenica Z.J.Liu＆L.J.Chen）作了描述和绘图。该新种产中国广东南部,与多枝拟兰（A.ramifera S.C.Chen＆K.Y.Lang）和日本拟兰（A.nipponica Masamune）相近,但本新种的根生有块根;退化雄蕊明显长于花柱,而且上部约1/3不贴生于花柱,可以区别。     

苏南地区典型城镇建设用地扩展的时空分异

选择江苏省常熟市南部的辛庄镇为研究区,采用该区1980、1991、2001和2009年4期高分辨率遥感影像,利用GIS技术,结合现有的建设用地扩展指标构建了综合扩展程度指数模型,定量分析了研究区1980-2009年间3个时段建设用地扩展的总体特征和时空分异特征.结果表明:随着农村城镇化和工业化进程的加快,辛庄镇建设用地显著扩展,1980-2009年间共增加19.24 km2,其中,2001-2009年该区建设用地进入高速扩展期,扩展面积、扩展贡献率和扩展强度均最大.研究区建设用地扩展具有明显的空间分异特征:1980-1991年,新增建设用地主要集中于镇区所在村域,1991年后,辛庄镇建设重心逐渐向工业发达的村庄转移.研究期间,辛庄镇的新增建设用地主要源于水田和旱地,二者共占建设用地总增加面积的88.1%,其余土地类型对建设用地的转入贡献率相对较小.     

紫堇属（Corydalis DC.）植物的种子形态及其分类学意义

在光学显微镜下研究了湖北产紫堇属（Corydalis DC.）15种及2变型的种子形态特征。结果表明,其种子小,近圆形、扁圆形或肾形,黑色或深棕色,具油质体。油质体帽状、扇形、条形或不规则,紧贴种子表面或分离。根据种子表面形态,种子可分为4种类型：（1）表面光滑,如大叶紫堇（C.temulifolia Franch.）、川东紫堇（C.acu-minata Franch.）、巴东紫堇（C.hemsleyana Franch.ex Prain）、北岭黄堇（C.fargesii Franch.）、鄂西黄堇（C.shennongensis H.Chuang）和小药八旦子（C.caudata（Lam.）Pers.）;（2）表面具刺或疣状突起,如阜平黄堇（C.wilfordii Regel）、小花黄堇（C.racemosa（Thunb.）Pers.）、地锦苗（C.sheareri S.Moore）和珠芽地锦苗（C.sheareri S.Moore f.bulbillifera Hand.-Mazz.）;（3）表面具凹点状印痕,如刻叶紫堇（C.incisa（Thunb.）Pers.）、紫堇（C.edulis Maxim.）、地柏枝（C.cheilanthifolia Hemsl.）、蛇果黄堇（C.ophiocarpa Hook.f.et Thoms.）、北越紫堇（C.balansae Prain）和延胡索（C.yanhusuo（Y.H.Chou et C.C.Hsu）W.T.Wang ex Z.Y.Su et C.Y.Wu）;（4）表面具凹点状印痕,并被有疣状突起,如伏生紫堇（C.decumbens（Thunb.）Pers.）。种子大小、形状和表面形态以及油质体形态在种内相对稳定,对一些物种的划分具有较重要的意义。     

湖北西部山地革螨及恙螨名录

自1989年以来,先后从湖北西部山地6个不同海拔、12个不同类型生境捕获的啮齿、食虫等小型哺乳动物体外采集到一大批革螨、恙螨和吸虱标本,经初步整理,鉴定有革螨l1科32属73种、恙螨有3亚科11属41种和亚种、吸虱3种,其中有中国新纪录1种,籁氏巨刺螨Macronyssus leucippe（Domrow）和湖北新纪录41种。     

河南固始下石炭统杨山组华夏木一新种

描述河南固始杨山煤矿下石炭统杨山组的一个华夏木新种Cathaysiodendronyangshanensesp.nov.,这是近年来继在甘肃靖远早石炭世臭牛沟组中发现华夏木之后该属在早石炭世地层中的又一发现。华夏木属是华夏植物群的特有分子,它在早石炭世的发现对探讨华夏植物群的起源有重要意义。     

Early Silurian (Telychian) rugose coral fauna of Daguan area, northeast Yunnan province, China

Study on rugose coral fauna of the Sifengya Formation (early Telychian) and Daluzhai Formation (mid-late Telychian) in Daguan area, northeast Yunnan Province, China was carried out. Rugose coral fauna of the Sifengya Formation included 18 genera and 34 species, while Daluzhai Formation with nine genera, ten species. We described rugose coral fauna (12 genera, 19 species) including one new genus and five new species, i.e. Protoketophyllum daguanense gen. et sp. nov., Crassilasma huanggexiense sp. nov., Pseudophaulactis heae sp. nov., P. convolutus sp. nov., and Shensiphyllum minor sp. nov. The characteristics and geological significance of rugose coral fauna of Sifengya Formation and Daluzhai Formation were analyzed. Particularly, rugose coral fauna of the Sifengya Formation represent early Telychian rugosan fauna in the Upper Yangtze region and improve the sequences of early Silurian (Llandovery) rugose coral assemblages in Yangtze region. It is therefore very meaningful to further analyze radiation period of rugose coral fauna in such epoch. __________ Translated from Acta Palaeontologica Sinica, 2005, 44(2): 229–246 [译自: 古生物学报, 2005, 44(2): 229–246]     

Revision of Hyolitha from the Ordovician of Estonia

Topotype specimens of the Middle OrdovicianHyolithes acutus Eichwald, 1840, which is the type of the genus that lent its name to a family, order, class, and even phylum according to some, andH. latus Eichwald, 1860 allow that genus and those species to be firmly established on a sound, morphologic basis. In addition, preservation of the types ofHyolithes striatus Eichwald, 1860 is sufficiently good to warrant reassignment toDorsolinevitus Syssoiev, 1958. In contrast, the type ofH. insularis Eichwald, 1860 is incompletely preserved, and this species is not recognizable beyond the type material. The concept of the family Hyolithidae is revised to more closely conform to the morphology ofHyolithes, with authorship herein ascribed toSyssoiev (1958) rather than toNicholson (1872). The stratigraphic distribution of these taxa suggests thatHyolithes as defined herein first appears in the Middle Ordovician, but extends into at least the Lower Devonian, as suggested by two species from the Barrandian region of the Czech Republic. Their geographic distribution further re-enforces the notion of two distinct paleobiogeographic provinces based on hyoliths, a Mediterranean province and Baltic province, with almost no mixing of hyolith faunas during the Ordovician.      

广东省蛇类新纪录-双全白环蛇

2011年9～10月,分别在广东省乳源瑶族自治县南岭国家森林公园和始兴县车八岭国家级自然保护区采集到游蛇科(Colubridae)白环蛇属(Lycodon)标本3号,经鉴定为双全白环蛇(Lfasciatus),为广东省蛇类新纪录.     

Three new species of Potamothrix (Oligochaeta, Naididae, Tubificinae) from Fuxian Lake, the deepest lake of Yunnan Province, Southwest China

Three new species of Potamothrix Vejdovsky & Mrázek, 1902 (Oligochaeta: Tubificinae), Potamothrix praeprostatussp. n., Potamothrix paramoldaviensissp. n. and Potamothrix parabedotisp. n., are reported from Fuxian Lake of Yunnan Province, Southwest China. Potamothrix praeprostatusdiffers from its allies by its prostate glands joining atria in its proximal to middle portion, and spermathecal chaetae. Potamothrix paramoldaviensis is distinguishable from its allies by having penial chaeta but no penes, and differs from Potamothrix moldaviensisby its homogenous atrium. Potamothrix parabedoti is distinctive in the position of its reproductive organs, and differs from Potamothrix bedoti by its homogenous atrium. Hitherto, 34 freshwater oligochaete species have been recorded in Yunnan Province, including nine endemic species from the plateau lakes.     

片断化生境中滇桐传粉生物学和繁育系统

通过野外观察和人工授粉试验方法,对云南省文山州西畴县法斗分布区片断化生境中濒危植物滇桐(Craigia yunnanensis)的传粉生物学特征和繁育系统进行研究.结果表明:滇桐每个聚伞花序有2～9朵两性花,单花花期为3～4d,单花雌雄蕊在时空上有一定的隔离;杂交指数(OCI) ＞4,花粉-胚珠比(P/O)为1381±53;有效传粉昆虫为大头丽蝇(Chrysomyia megacephala);同株异花授粉结实率低;滇桐的繁育系统属于异交为主,部分自交亲和,传粉过程需要传粉者;自然状态下滇桐的座果率(56.67％±3.85％)和结籽率(6.26％±0.75％)均较低,而异株异花授粉均可显著提高座果率及结籽率(P＜0.01),这与当前片断化生境中传粉昆虫少、效率低下等有关,表明生境片断化正在影响滇桐植株的早期生殖成功.