Capparis dongvanensis sp. nov. (Capparaceae) from Vietnam

Capparis dongvanensis (Capparaceae) is described as a new species and illustrated from Ha Giang Province of Vietnam. It is morphologically similar to C. lanceolaris and C. fengii, but differs in the number of flowers on peduncles, length of spine and petiole, apex of the leaf, type of inflorescence, petal color, cylindrical ovary without any beak, fruit shape and number of seeds per fruit. Diagnostic morphological characters along with pollen and seed SEM images of C. dongvanensis and allied species are provided. Its ecology, habitat and conservation status are also described.     

优良单株家系辣木叶的表型性状分析

为挖掘辣木(Moranga oleifera)优良种质资源,对30个优良单株家系的叶片表型性状进行研究。结果表明,除叶形外,辣木不同家系间的叶柄和叶片颜色、复叶数、复叶柄长度和直径、复叶间距、叶长、叶宽均存在不同程度的差异。复叶数与复叶柄长度和直径、复叶间距、叶长、叶宽呈极显著正相关;主成分分析表明,叶长、叶宽、复叶柄长度和直径、复叶间距、叶柄和叶片颜色是区分辣木不同家系最主要的叶片性状指标。聚类分析结果表明,30个辣木家系可分为3大类,叶片表型性状存在显著差异的家系的遗传距离较远。因此,叶柄和叶片颜色、复叶数、复叶柄长度和直径、复叶间距、叶长、叶宽将为直观区分辣木家系提供参考。     

Rhus coriaria var. zebaria (Anacaridaceae), a new variety from Iraq

Rhus coriaria var. zebaria from Duhok/Aqrae, Kurdistan, Iraq is described as a variety new to science. Field expeditions started in spring 2011, continued during 2012 and 2013 with the aim of collecting sumac specimens from different physiographic regions of Kurdistan, Iraq. A total of ten plants for each variety were sampled. An equal number of tagged herbarium specimens were prepared. The holotype was designated and deposited together with other herbarium specimens in the herbarium of the Faculty of Agriculture and Forestry, Univ. of Duhok. Morphological characters of the leaf, inflorescence, flowers, infructescence, and fruit were studied. The pH value of the pericarp in addition to the hilum length was measured. Results were compared with Rhus coriaria L. var. coriaria. The most distinctive feature of the new variety is the dull whitish brown color of the drupe pericarp of var. zebaria as compared to the reddish brown color of the drupe pericarp of var. coriaria. The whitish color of the drupes of var. zebaria, in combination with their larger size, represents diagnostic characters for distinguishing this variety. In contrast, most leaf characters are of little or no taxonomic value in this species. Only shape, apex and marginal teeths of the leaflets show minor differences for separating the two varieties. Female and male inflorescences and flowers characters show no significant differences. Both hilum length and pH value characters may be useful for taxonomic application if mean values are taken in consideration.     

云南东南部苦苣苔科植物一新种——南溪蛛毛苣苔

中越边境的石灰岩地区不仅具有较丰富的植物多样性,而且特有现象十分突出。该文描述了中越边境石灰岩地区位于云南东南部河口境内的苦苣苔科一个植物新种——南溪蛛毛苣苔(Paraboea nanxiensis Lei Cai & Gui L. Zhang)。该新种在叶片的形状和毛被、花的颜色、花序短于叶片以及雌蕊无毛等性状上与产自广西那坡的垂花蛛毛苣苔(P. nutans D. Fang & D. H. Qin)最为相似。两者的主要区别在于:该新种的花萼裂片先端最宽且光滑无毛,花冠浅宽钟形、花冠筒不明显、花冠管内面基部白色,花丝无毛以及蒴果稍微扭曲; 该新种生于云南海拔530～610 m的河口及马关一带,而垂花蛛毛苣苔产于广西那坡的海拔900～1 150 m段的石灰山。此外还讨论了该新种与蛛毛苣苔属其他几种基生叶类型的近缘种[如三萼蛛毛苣苔(P. trisepala W. H. Chen & Y. M. Shui)、蔓耗蛛毛苣苔(P. manhaoensis Y. M. Shui & W. H. Chen)及河口蛛毛苣苔(P. hekouensis Y. M. Shui & W. H. Chen)]的区别,并提供了相关物种的彩色图片及区分说明,主模式标本存放于中国科学院昆明植物研究所标本馆(KUN)中。近年来,由于中越边境的石灰岩地区不断有新分类群或新记录物种的发现,所以很有必要加强对该区域的植物多样性考察。     

A Bryophyte flora of Cornwall. II. Sphagna

Abstract

The taxonomy of Anomobryum julaceum and allied species with axillary bulbils in Europe and Asia is reviewed. A. concinnatum is regarded as a distinct species, occurring in W. and C. Europe, SW., N. and C. Asia and N. America. A. bavaricum has often been confused with A. concinnatum, but differs in its more numerous, small, reddish bulbils and in leaf shape; it is known only from the European Alps. The Asian A. nitidum also has numerous small reddish bulbils but it differs from A. bavaricum in leaf shape and bulbil form. A lectotype is designated for A. nitidum, of which A. gemmigerum and other nominal taxa are regarded as synonyms. Information is presented on geographical ranges and habitats of the four valid species.     

茶树品种(品系)芽叶色泽表型遗传数量分类研究

为探讨茶树春梢芽叶色泽的数量遗传特性,应用色差仪测定68份茶树品种(品系)春梢芽叶的色泽表型值并进行数量分类研究。结果表明,对叶色差异度较高的第1叶位L~*、a~*、b~*、C、H值进行分层聚类分析,可将芽叶色泽划分为紫色系、黄色系和绿色系等7个色系。色系分类与CIELab颜色体系的对应性较强,色系划分符合茶树品种(品系)叶色表型特点。茶树品系的叶色表型较丰富,叶色在L~*、a~*、b~*值三维坐标空间整体呈带域分布,色系由紫色系、紫红色系、紫绿色系向黄色系、黄绿色系、绿色系变化。春梢芽叶色泽表型数据的遗传数量分类与色系判定为茶树特异芽叶色泽育种提供科学依据。     

<Emphasis Type="Italic">Sinningia lutea</Emphasis> (Gesneriaceae), a new species from Southern Brazil

Sinningia lutea (Gesneriaceae) is described and illustrated as a new species from the Pampa Biome, in Southern Brazil. In the literature, this species has hitherto been confused with S. allagophylla from which it can be easily separated using a set of floral and vegetative features (especially corolla color and size and leaf shape). An artificial key to separate S. lutea from S. allagophylla and S. curtiflora (another sympatric species, with some morphological similarities) is presented. Some ecological remarks on the differential distribution of S. lutea and S. allagophylla are also made.     

Plagiomnium guizhouense Y.-J.Yi & S.He sp. nov. (Mniaceae) found in southwestern China

A new species of Plagiomnium (Mniaceae), P. guizhouense Y.-J.Yi & S.He from Guizhou, China is described and illustrated. The new species is similar to P. affine in having spinosely serrate leaf margins with teeth consisting of up to 4 or more cells, a broadly elliptic leaf shape, and a decurrent leaf base, but is distinguished from the latter species by having a cuspidate leaf apex, broader marginal differentiation with borders consisting of 4–5 rows of linear, thick-walled cells, strongly ciliate marginal teeth that are sometimes branched and up to 7 cells long in upper fertile stem leaves and perichaetial leaves, and a much shorter leaf costa that ends just above mid-leaf in the lower leaves.     

A comparison of Dichodontium flavescens (Dicks.) Lindb. and D. pellucidum (Hedw.) Lindb. (Bryopsida)

Abstract

Fifty-three herbarium samples of the genus Dichodontium, originating from 15 countries in Europe and North America, were examined to critically assess new distinguishing characters between D. flavescens and D. pellucidum. The examination, including SEM, revealed some new characteristics in the gametophyte, notably leaf shape, leaf length: width ratio, and width of the nerve, permitting accurate determinations even on sterile material. D. flavescens is recognized here as a distinct species.     

Rheum neyshabourense sp. nov. (Polygonaceae) from Iran

Rheum neyshabourense Baradaran & Jafari from northeastern Iran (Khorassan Razavi Province) is newly described. It is similar to R. ribes but differs in the number of prominent leaf veins, the position of the joint on the pedicle, fruit shape, epidermal cell shape and the type of stele in the inflorescence axis. A key to Rheum species in Iran is also provided.     

Vaccinium damingshanense sp. nov. (Ericaceae) from Guangxi,China

Vaccinium damingshanense (Ericaceae), a new species from Daming Mountain, Guangxi Zhuang Autonomous Region, China is described, illustrated and placed in a new key for the identification of species of V. sect. Eococcus Sleumer in China. The new species is similar to V. carlesii Dunn, but differs in leaf shape, leaf margin character and details of anther thecae. Information on its distribution and ecology is also provided.     

Primula vallicola sp. nov. (Primulaceae) from Sichuan,China

A new species of Primula, P. vallicola Y. Xu, G. Hao & C.M. Hu, is described and illustrated from Sichuan province, China. Based on general morphology the new species is assigned to Primula sect. Aleuritia subsect. Yunnanensis. It is closely allied to P. kialensis, but can be distinguished by its larger stature, leaf shape, and the well‐differentiated petiole. The leaf shape of the new species is ovate to ovate‐elliptic and usually sub‐rounded at base. The new species also resembles P. homogama, but differs in being glabrous rather than with appressed hairs, and with longer petiole.     

不同种源黄连木秋季色素含量与叶色参数的关系

该研究以陕西汉中、河南林州、河北涉县和北京中国科学院植物研究所4个种源黄连木(Pistacia chinensis Bunge)的苗木为对象,用分光光度计和色差仪对其叶绿素、类胡萝卜素、花色素苷含量及叶色参数(L*、a*、b*)进行了测定分析,探讨不同种源苗木秋季叶色变化规律及差异,揭示黄连木叶色呈现与叶片色素含量之间的内在关联,为筛选适合城市绿化的优良黄连木种源提供依据。结果表明:(1)在秋季叶片转色期,随着时间的推移,4个种源黄连木叶片的叶绿素、类胡萝卜素和花色素苷含量的比例呈现不同的变化趋势,其中:河北种源的花色素苷含量较高,叶片呈现红色;陕西种源叶绿素含量较高,叶片呈现绿色的时间较长;河南、北京种源处于两者之间。(2)各个种源黄连木的叶色参数a*值(红/绿)均与花色素苷含量呈正相关关系,与叶绿素含量呈负相关关系,且相关系数均达到显著水平(P0.05),各个种源叶色参数L*值(光泽明亮度)也与叶绿素含量间表现出显著或极显著的正相关性。研究发现,河北种源黄连木秋季的叶色最红,陕西种源黄连木叶片呈现绿色的时间最长;色差仪的应用实现了叶色和各色素含量间量化的关系。     

Leaf-shape variation of Paederia foetida in Japan: reexamination of the small, narrow leaf form from Miyajima Island

Variations in Paederia foetida L. leaf shape were examined to evaluate the taxonomic validity of the small, narrow leaf form of P. foetida f. microphylla Honda from Miyajima Island, Honshu, Japan. There is considerable variation in P. foetida individuals in terms of leaf size and leaf index (leaf length:leaf width ratio). On Miyajima Island, some individuals have narrow leaves with a high leaf index value, a phenotype represented by the type specimen of P. foetida f. microphylla, and some do not. Given that the leaf size of individuals from Miyajima Island is smaller than that of individuals from other localities in Japan, and that the small leaf phenotype is stable even under cultivation, P. foetida f. microphylla is classified as the form having the smallest leaf size. Anatomical examination of leaf blades revealed that the large variation in leaf size was attributable to variation in the number of leaf cells but not to differences in cell size or cell shape. Based on these results, we discuss the endemism of P. foetida f. microphylla.     

Primulina maciejewskii sp. nov. (Gesneriaceae) from Guangdong,China

Primulina maciejewskii F. Wen, R.L. Zhang & A.Q. Dong, a new species of Primulina (Gesneriaceae) from Guangdong, China, is described and illustrated. It is similar to P. lobulata and P. danxiaensis in leaf and flower shape, but can be distinguished by bract shape, peduncle, pedicel, and bract size, filament and anther indumentum, and number of bracts, staminodes and stigma.     

Salix kaptarae sp. nov. (Salicaceae) from Crete

A new species of willow from Crete, named Salix kaptarae Cambria, C. Brullo & Brullo, is described and illustrated. Morphologically, it shows close relationships with species belonging to the S. apennina group, mainly with respect to the leaf shape, and the hairy ovary, capsule and base of stamina filaments. Considerations on its ecology, leaf micro‐morphology and conservation status are also provided.     

Tropaeolum sparrei sp. nov. (Tropaeolaceae) from western Ecuador

A new species, Tropaeolum sparrei Ståhl (Tropaeolaceae), is described from submontane cloud forest habitat in western Ecuador. It differs from T. papillosum Hughes (the species it resembles most) by having thinner, tomentose stems, smaller, glabrous or subglabrous leaves with the petiole inserted relatively closer to the lower leaf margin, and flowers with uniformly coloured and straight calyx spurs. In leaf shape it is also similar to T. repandum Heilborn, from which it differs in its larger flowers with entirely black petals and blue anthers.     

Manihot gratiosa and M. lourdesii spp. nov. (Manihoteae,Euphorbiaceae) from the Brazilian Cerrado

During a botanic expedition in 2013 to study the taxonomy of the genus Manihot in the Cerrado biome, numerous specimens were collected in the Chapada dos Veadeiros region, in central Brazil. After careful analyses, two new species of this genus were discovered. Manihot gratiosa and M. lourdesii are herein described and illustrated. Both species can be distinguished from morphologically similar species by a combination of characters such as shape and overlapping of leaf lobes, indumentum, type and aspect of inflorescence, integrity of pistillate sepals, as well as shape, integrity, and size of bracts of both male and female flowers.