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1.
Chrysymenia tigillis sp. nov. is described on the basis of a few specimens collected from Dhofar, Sultanate of Oman. The new species is known only from southern Oman, a region of the northern Arabian Sea that is strongly impacted by the upwelling from the summertime monsoon. It is distinguished from other species of the genus by the simple nature of the blades, their dimensions (to 75 cm in length and to 21 cm in width), the rough, bumpy surface of the blades, and the presence of internal struts connecting the inner sides of the blades. A census of the currently recognized species in the genus Chrysymenia is provided.  相似文献   

2.
Turbinaria foliosasp. nov. is described on the basis of several collections made from Dhofar, Sultanate of Oman. The new species is known only from southern Oman, a region of the northern Arabian Sea that is strongly impacted by the upwelling from the summertime monsoon. It is distinguished from other species of the genus by the shape of the leaves and by their loose, non‐congested arrangement. Air vesicles, embedded in the leaves, may be present, but more often are absent. A census of the currently recognized species in the genus Turbinaria is provided. Reference is made to Sargassum turbinarioides and Sargassum turbinati‐folium. These species possess discrete blades and spherical vesicles and thus conform to Sargassum.  相似文献   

3.
Wynne  M. J. 《Journal of phycology》2003,39(S1):60-61
Intensive littoral and sublittoral collecting on the monsoon-impacted rocky shores of southern Oman, made at the end of the summertime monsoon (Sept. 2000 and Sept. 2001), has produced a remarkably high number of undescribed taxa and new records for this region of the Northern Arabian Sea. Taxa to be discussed in this presentation include: a new species of Centroceras that reaches 60 cm in height, is heavily corticated, has distinctively secund branching, and occurs well into the 'supralittoral fringe'; a new species of Jolyna , which is often branched, is not as long or thick as the more common J. laminarioides , has ascocysts but lacks hair tufts, and also occurs in the supralittoral; a Turbinaria (T. foliosa) that has the least modified blades known in the genus; a remarkably robust and erect species of Leveillea ; and an undescribed Gelidium , which has previously passed under the name of ' Suhria vittata '. A complicated picture has emerged that shows this flora to have biogeographical affinities with pantropical and subtropical regions, the tropical-subtropical Indo-Pacific, South Africa, temperate Europe and the Mediterrranean, Japan, as well as revealing components that are characteristic of the Arabian Sea monsoon season and apparent endemics restricted to Oman. This research (the Algal Biodiversity Project of Oman) has been funded by the British Government's Darwin's Initiative grant for the 'Survival of Species' and managed by HTS Development, Ltd., of the U.K.  相似文献   

4.
In a section from the central Oman Mountains (Wahrah Formation, Jebel Buwaydah) well preserved radiolarians were extracted. Stratigraphically they represent typical earliest Cretaceous species (Bernasian). Besides well known Tethyan species allowing an exact age determination, unknown morphotypes are common in some samples. Some of these represent new species, which are described herein. The composition and diversity of the faunas hints to a depositional environment in the lower bathyal.  相似文献   

5.
This article is a taxonomic study of the radiolarian species of the superfamilies Eptingiacea and Saturnaliacea occurring in the middle Carnian fauna from the Köseyahya section, near the town of Elbistan, southeastern Turkey. This fauna is characteristic of the Tetraporobrachia haeckeli Radiolarian Zone as defined in Austria and later found also in Turkey and Oman. It comes from an 8 m thick succession of clayey/cherty limestones from the lower part of the section. In addition, a few species from the late Ladinian and Carnian from Oman and the early Norian from Alaska have also been included in this study, in order to improve some generic diagnoses and to show the diversity and evolutionary trends of some genera. 32 radiolarian species of which 22 are new are described and illustrated, and assigned to 16 genera of which three are new (Capnuchospyris, Veleptingium, and Triassolaguncula). The diagnoses of some species, genera, subfamilies and families have been revised, and the family Eptingiidae has been raised to the rank of superfamily.  相似文献   

6.
This revision of Socotran Indigofereae (Leguminosae) treats two genera, Microcharis and Indigofera , and 16 species, one with two varieties. Indigofera coerulea var. coerulea and I. nugalensis are new records for the archipelago. Indigofera nephrocarpoides, I. marmorata (lectotypified here) and I. socotrana are endemic, whilst Microcharis disjuncta vat. fallax and Indigofera nugalensis are near-endemic to the Socotran islands. This study indicates that the closest relatives of the Socotran Indigofereae are to be found in African lineages. The strongest affinities are between Socotra and extreme NE Somalia ( Indigofera pseudointricata, I. nugalensis ) and, to a lesser extent, with SW Oman ( Microcharis disjuncta var. fallax ), SW Pakistan ( I. nephrocarpa ) and Southern Yemen. Socotran Indigofereae are mainly derived from Tertiary African palaeotropical and drought-adapted lineages. We also suggest that following the separation of the islands from mainland Africa some Indigofereae would have reached the archipelago as a result of recent, long-distance dispersal events.  相似文献   

7.
Ichthyological Research - A new species of ponyfish, Deveximentum mekranensis, is described based on specimens collected from the Gulf of Oman. The new species is distinguishable from its congeners...  相似文献   

8.
Two new species of mysid shrimps are described from shallow coastal waters of Northern Oman. Haplostylus quadrispinosus sp. nov. is primarily distinguished from allied species by the arrangement and size of lateral spines on the telson. The form of the telson and exopod of the 4th male pleopod characterize a second new species, Anisomysis arabica sp. nov. A third species Mysidopsis kenyana, was previously recorded only from East Africa and its presence in samples considerably extends its geographical distribution. Four mysid species are now documented from coastal waters of Oman.  相似文献   

9.
江西蕨类植物新记录   总被引:1,自引:0,他引:1  
报道了10种新记录蕨类植物,包括仙霞铁线蕨、光脚短肠蕨、阔片短肠蕨、毛柄短肠蕨、粤紫萁、广东团扇蕨、雨蕨、顶果膜蕨、线羽凤尾蕨、舌蕨等,其中包括江西新记录科雨蕨科和极度濒危的珍稀蕨类植物粤紫萁.引用的标本均存放于湖南科技大学标本馆(HUST).  相似文献   

10.
通过野外实地调查,结合标本和文献查阅,对深圳地区野生兰科植物种质资源、区系特征等进行研究。结果表明:(1) 深圳野生兰科植物资源共43属75种,以深圳东南部的梧桐山和东部的七娘山较为丰富。其中地生兰28属49种,附生兰13属24种,腐生兰2属2种。(2) 本次调查共发现9个深圳新记录种,其中叉柱兰Cheirostylis clibborndyeri、黄花线柱兰Zeuxine flava为广东省新记录种,二尾兰属Vrydagzynea、地宝兰属Geodorum为深圳新记录属。(3) 深圳野生兰科植物区系以热带成分为主,占非世界属总数的87.5%,温带成分仅占12.5%。(4) 与邻近地区比较,与香港共同属最丰富,有41属,占深圳总属数的95.3%;共有种70种,占深圳总种数的93.3%,具有明显的相似性。  相似文献   

11.
The new species Fagonia mahrana , from eastern Yemen and adjacent parts of Oman, and F gypsophila , from north-eastern Somalia, are described and illustrated. F subinermis , from Iran, is resurrected as a species. The three species all have unifoliolate leaves and minute stipules.  相似文献   

12.
A new diploid species, Biscutella ebusitana is described from coastal cliffs of the western Balearic islands. It is related to B. sempervirens L. and B. montana Cav. from which it can be distinguished by a combination of vegetative (shape, size, petiole and hairs of leaves, petiolatc leaves) and reproductive features (shape of inflorescence, calyx indument). Earlier Balearic records of B. frutescens Coss. should be referred to B. ebusitana.  相似文献   

13.
The following new species are described: Chamaecrista dunensis (Somalia), Acacia densispina (Somalia), A. flagellaris (Somalia), Tephrosia karkarensis (Somalia), T. scopulata (Somalia), Indigofera ancistrocarpa (Kenya), I. curvirostrata (Ethiopia), I. hiranensis (Somalia), I. karinensis (Somalia), I. kucharii (Somalia), I. nugalensis (Somalia), I. pellucida (Kenya, Somalia), I. sabulosa (Ethiopia, Somalia), I. sessilis (Somalia), I. ienuirostris (Somalia), Rhynchosia megalocalyx (Somalia), Crotalaria allophylla (Somalia), C. intricata (Somalia), C. warfae (Somalia), and Coronilla somalensis (Somalia). 2n = 22 is reported in Tephrosia karkarensis. Cassia somalensis, Acacia puccioniana, Sophora somalensis , and Crotalaria sennii are reduced to synonyms of respectively Senna hookeriana, Dichrostachys kirkii, Millettia usaramensis and Crotalaria boranica subsp. trichocarpa . Thirty-seven taxa are reported from Somalia for the first time, including Ptycholobium biflorum , known previously only from Southern Africa. Crotalaria pieropoda , known previously only from Socotra, is reported from Somalia and Oman. Neptunia oleracea and Vatovaea pseudolablab are new generic records for respectively Ethiopia and Oman. The fruits of Indigofera boranica are described. Vigna somaliensis and an allied species are discussed. Rhynchosia gansole is lectotypified and its flowers and fruits are described.  相似文献   

14.
A new species of Trichodesma (Boraginaceae) is described from the southern region of Oman.  相似文献   

15.
永安竹类植物及其区系研究   总被引:1,自引:0,他引:1  
经调查,永安天然分布的竹类植物有11属63种(含变种、变型),属种分别占中国总数的28.2%和11.4%,占全省的64.7%和48.8%。其中红舌唐竹、湖南箬竹、毛箨茶秆竹、黄槽毛竹等4种为福建省竹类分布新记录。经类群分析表明,永安竹类植物以单轴散生和复轴混生类型为主,具明显的由丛生竹向散生竹过渡特性,是散生竹类和混生竹类的分布中心。区系地理分析表明,永安竹类植物有5个分布区类型(含亚型),其中东亚成分占首位。  相似文献   

16.
中国香港新记录的十个分类单元   总被引:1,自引:0,他引:1  
中国香港位于热带北缘,其植被在历史上曾遭到大规模破坏,近几十年来逐渐恢复。香港植物标本采集有很长的历史,迄今为止已记录的维管植物超过2 170种,然而新种和新分布仍在不断增加。在最近的野外工作中,作者发现10种在香港新记录到的维管植物,分别是唇边书带蕨[Haplopteris elongata (Swartz) E. H.Crane]、雷公连[Amydrium sinense (Engl.) H. Li]、百足藤[Pothos repens (Lour.) Druce]、四川轮环藤(Cycleasutchuenensis Gagnep.)、山黑豆(Dumasia truncata SieboldZucc.)、倒心叶珊瑚[Aucuba obcordata (Rehder) Fu ex W. K. Hu et Soong]、竹叶榕(Ficus stenophylla Hemsl.)、长叶冠毛榕[F. gasparriniana var. esquirolii (H. Lév.Vaniot) Corner]、硬叶冬青(Ilex ficifolia C. J. Tseng ex S. K. Chen et Y. X. Feng)、假福王草[Paraprenanthes sororia(Miq.) C. Shih.]。雷公连属(Amydrium Schott)、山黑豆属(Dumasia DC.)和假福王草属(Paraprenanthes C. C.Chang ex C. Shih)为香港的新记录属。以上的发现不仅丰富了香港的植物区系,而且表明保护残存植被非常重要,且极小种群的保护也值得特别关注。  相似文献   

17.
We document the occurrence of the Oriental butterfly species Euchrysops cnejus in northern Oman. It is very similar to E. osiris whose distribution extends from the Afrotropical region into Dhofar, southern Oman. Oman is thus the only country where both species co-occur. The two species differ in genitalia and in molecular data. We show that based on the COI marker, E. cnejus and E. osiris are sister species and the Oman populations of E. osiris are closely related to the population from continental Africa. Haplotype diversity is lower in E. cnejus, than in E. osiris. Genetic differences were found between the Australian, Oriental and Oman populations of E. cnejus but available data were not sufficient to clarify the origin of the Oman population.  相似文献   

18.
江西省种子植物区系新资料   总被引:2,自引:0,他引:2  
报道了江西省植物分布新记录3种,均发现于井冈山地区,分别为:肾萼金腰Chrysosplenium delavayi Franch.、圆苞山罗花Melampyrum laxum Miq.和窄叶马铃苣苔Oreocharis argyreia Chun ex K. Y. Pan var. angustifolia K. Y. Pan。  相似文献   

19.
中国桂林岩溶洞穴苔藓植物研究   总被引:5,自引:1,他引:4  
对采自中国广西桂林17个岩溶洞穴的192份苔藓植物标本进行研究,报道了洞穴苔藓13科19属28 种,其中含广西苔藓植物新记录16种。野外观察表明,桂林岩溶洞穴苔藓植物主要分布于洞穴洞口0~32m 弱光带范围内。三种丛集型藓类植物:净口藓、钩喙净口藓和东亚泽藓参与岩溶洞穴洞口带钙华沉积。  相似文献   

20.
报道福建省植物分布新记录3种(亚种),即浙赣车前紫草Sinojohnstonia chekiangensis、显脉山绿豆Desmodium heterocarpon subsp. angustifolium、鼎湖耳草Hedyotis effusa。其中,车前紫草属Sinojohnstonia为福建新记录属。  相似文献   

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