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1.
Three new species of Batrachospermum Roth (Batrachospermales, Rhodophyta) from China are described in this paper. B. yunnanense sp. nov. has long-cylindrical trichogynes with long stalks and is diagnostic of section Virescentia. Within this section, B. yunnanense is similar to B. helminthosum Bory emend. Sheath et al., but it is dioecious and has curved carpogonial branches, while the latter is monoecious and has straight carpogonial branches. It is also similar to B. transtaganum Reis, but it differs from the latter in long carpogonia,big carposporophytes and carposporangia. It is considered that B. nothocladoideum sp. nov. is assigned to section Contorta, subsection Kushiroense, because its carpogonial branches are twisted and gonimoblast filaments are loosely agglomerated. This new species similar to B. iriomotense Kumano, but with short fascicles, long-ovoid or subpyriform cells, numerous terminal hairs, long-ellipsoid trichogynes, big carposporophytes and small carposporangia. The plant is quite tough and cartilaginous and similar to Nothocladus in gross morphology, but its carposporophytes are compact instead of diffuse. This shows that it may be a transitional species between section Contorta and genus Nothocladus. So, B. transitorium sp. nov. should belong to section Contorta, subsection Kushiroense, because of its curved or twisted carpogonial branches and loosely agglomerated gonimoblast filaments, with globose or subglobose cells in fascicles similar to B. spermatiophorum Vis et Sheath, but no colourless spermatiophores. In terms of small and numerous carposporophytes, B. transitorium sp. nov. is similar to some species of section Batrachospermum. However, their other features are unique, indicating its transitional nature between section Contorta and Batrachospermum. 相似文献
2.
Nephroselmis gaoae sp.nov.is described on the basis of light and electron microscope observations ofcultured material originally collected and isolated from seawater of Jiaozhou Bay,Qingdao,China.Theperiplasts on the cell body and flagella are covered by five types of scales,two types on the flagella andthree on the body.Among these,the morphology and the number of spines of large stellate body scalesdiffer remarkably from those of previously described species of Nephroselmis.Apart from these,the unusualfine structure of the eyespot(stigma)is very characteristic.As in the other species of Nephroselmis,theeyespot lies immediately under the two-membraned chloroplast envelope;unlike the others,however,it isnot composed of a number of osmiophilic globules,but consists of about 14 curved rod-shapedosmiophilic bodies arranged loosely and randomly.This feature distinguishes the present new species notonly from the other species of Nephroselmis but also from the other motile algal species,the eyespots struc-ture 相似文献
3.
Two new species of the genusTinocladia Kylin (1940)T. eudesmoides Ding et Lu sp. nov. andTinocladia zhangii Ding et Lu sp. nov., are described.T. eudesmoides is mainly characterized by its longitudinally and transversely produced sub-cortical filaments from the medulla, its short
uniseriate assimilating filaments, usually composed of 6–10 cells with slightly swollen and narrow ultimate cells, and its
unilocular sporangia (60–115)×55–70μm, variable in size.T. zhangii is mainly characterized by its very solid frond, not rip apart by hands, its evident longer primary branches, its short and
slender secondary branches, with very evident sub-cortical layer, and filaments divided repeatedly, and its large and small
unilocular sporangia, with the latter borne on an evidently swollen pedicel.
Project B80981816 supported by the NSFC.
Contribution No. 4443 from the Institute of Oceanology, Chinese Academy of Sciences, Qingdao, China. 相似文献
4.
A new muricid gastropod species,L ataxiena lutescena sp. nov.,is described and illustrated. The new species was recognized during reidentification of the Muricidae collection in the Marine Biological Museum,Chinese Academy of Sciences,Qingdao. The specimens of the new species were collected from the East and South China Seas off Fujian,Guangdong,and Hainan Provinces. Lataxiena lutescena sp. nov. is similar to Lataxiena blosvillei(Deshayes,1832) in general shape,but can be distinguished from the latter by the shell sculpture and radular characteristics. Lataxiena lutescena sp. nov. also resembles Lataxiena bombayana(Melvill,1893),but differs from that species in the shell shape and anal notches and in lacking short spines on the shell. 相似文献
5.
6.
Nephroselmis gaoae sp. nov. is described on the basis of light and electron microscope observations of cultured material originally collected
and isolated from seawater of Jiaozhou Bay, Qingdao, China. The periplasts on the cell body and flagella are covered by five
types of scales, two types on the flagella and three on the body. Among these, the morphology and the number of spines of
large stellate body scales differ remarkably from those of previously described species ofNephroselmis. Apart from these, the unusual fine structure of the eyespot (stigma) is very characteristic. As in the other species ofNephroselmis, the eyespot lies immediately under the two-membraned chloroplast envelope; unlike the others, however, it is not composed
of a number of osmiophilic globules, but consists of about 14 curved rod-shaped osmiophilic bodies arranged loosely and randomly.
This feature distinguishes the present new species not only from the other species ofNephroselmis but also from the other motile algal species, the eyespots structure of which had been previously described.
Contribution No. 2316 from the Institute of Oceanology, Chinese Academy of Sciences.
This paper was presented at the XIVth International Seaweed Symposium held in Brittany, France, 1992. 相似文献
7.
Two new species of the genus Tinocladia Kylin, T. gracilis sp. nov. and T. microsporangii sp. nov,, are described. T. gracilis is characterized by its slender frond, variable size, infrequently branched medullary filaments, and short assimilating filaments with 2 - 7 cells. T. microsporangii is characterized by its medullary cells which are slightly larger than sub-cortical ones; narrow sub-cortical layer, usually consisting of 4- 6 cells and very small unilocular sporangia. The holotypes are deposited at the Herbarium of the Institute of Oceanology, Chinese Academy of Sciences, Qingdao, China. 相似文献
8.
《中国海洋湖沼学报》2021,(5)
Laetmonice Kinberg,1856 is a remarkable genus characterized by having harpoon notochaetae in the polychaete family Aphroditidae.We describe a new species of Laetmonice,Laetmonice iocasica sp.nov.,found from seamounts on the Caroline Ridge in the tropical Western Pacific.The new species is readily distinguished from congeners,particularly those distributed in the Indo-Pacific Ocean by possessing45 segments with 18 pairs of elytra,and the tuberculated harpoon notochaetae in the elytrigerous segments,which are replaced by tuberculated notochaetae without recurved fangs on segments 4 and 5.Laetmonice iocasica sp.nov.is closely related to L.producta Grube,1877,but differs in both morphology and the genetic distance of the mitochondrial cytochrome oxidase subunit I(COI) sequences.Laetmonice producta Grube,1877 contained five varieties reported in various marine areas,which have been raised to species level.However,the records of L.producta from the Sagami B ay and Suruga B ay in Japan and in the south-eastern Australia remain obscure and probably represent a different species.The data indicate that L.producta,which was originally described from Kerguelen Islands in the Southern Ocean and later commonly found on the Antarctic shelf,is probably distributed only at high latitudes of the Southern Hemisphere. 相似文献
9.
A new species of deep-water barnacle that belongs to the family Scalpellidae is described from the South China Sea. A rcoscalpellum liui sp. nov. is morphologically similar to A rcoscalpellum gryllum Zevina,but differs from the latter by the absence of longitudinal striae on the capitular plates and the presence of caudal appendages with few terminal setae. 相似文献
10.
描记采于云南省邱北县一地下洞穴盲金线鲃一新种,以其头上骨质突形状如鹰喙命名鹰喙角金线鲃Sinocyclocheilus aquihornes sp.nov.。新种头形及完全退化的眼与分布于云南泸西阿庐古洞的透明金线鲃S.hyalinus Chen et Yang(1994)相近,但有下列特征可区别:1)角形如鹰喙,后者为一向前的直突起;2)侧线完全,侧线鳞为36,后者侧线不完全,侧线鳞孔9-11;3)背鳍起点位于体中点,至吻端的距离等于至尾鳍基的距离;后者背鳍起点位于体中点之后,至吻端的距离大于至尾鳍基的距离。 相似文献
11.
本文根据桐庐县瑶琳镇和平村上二叠统雾林山组（相当于龙潭组）剖面第⑨层中发现的一种奇待的种子化石，经标本描述鉴定，确认其为种子化石的新属种，而建立的奇丽桐庐籽（新属、新种）Tonglucarpusspectabilisgen.etsp.nov,归于晚二叠世。 相似文献
12.
描记采于贵州省茂兰自然保护区境内一洞穴的中国野鲮亚科(Labeoninae)一新属长臀鲮属Longanalus,spnov和一个新种大鳍长臀鲮Longanalus macrochiroussp nov。新属以臀鳍分枝鳍条为7根等特征,区别于该亚科所有属;新种以偶鳍发达,胸鳍后伸达到腹鳍基,腹鳍后伸超过臀鳍起点等显著特征命名大鳍长臀鲮。 相似文献
13.
A new species,Clathrocorys gracilis nov. spec. of Tripocyrtidae (Radiolarians: Nassellaria) from surface water in northern South China Sea, is described in this
paper. The new species has four radial beams arising from the cephalic base centre, each foot with cup-shaped structure and
ramified bar in the proximal section (near cephalic base), and each wing with a large mesh in the middle, a medium mesh and
a small mesh on each side respectively.
Project supported by the NSFC (No. 40276044) and the Chinese Academy of Sciences (No. KSCX2-SW-101B). 相似文献
14.
Pavlova viridis sp. nov. is described on the basis of light and electron microscope observations. The material was collected from the coast of Haiyang county of Shandong, China. It is characterized by 1) yellowish green to green chloroplast, 2) rudimentary short flagellum 0. 3um long and hook-shaped, 3)long flagellum with small spherical knob-scales, 4) absence of pyrenoid and stigma, and 5) marine habitat. This new species and P . salina seem to be most closely related to each other but their colour, the insertion of their three appendages, the shape of their knob scales, and their cell periplasts are quite different from one another . 相似文献
15.
The nuclear-encoded small subunit ribosomal RNA gene (18S rDNA) of 16 isolates of Chondrus from 8 countries were sequenced. A total of 1796 nucleotides were obtained and aligned with the phylogenetic analysis conducted. The results suggest that the entity from Dalian, China, regarded as C. sp1 is C. pinnulatus. The C. sp2 previously depicted as C. yendoi or Mazzaella japonica may belong to genus Chondrus. So, 4 Chondrus species, i.e. C. ocellatus, C. nipponicus, C. armatus, and C. pinnulatus are distributed in China. However, the entity from Connemara, Ireland, named C. crispus, is not a Chondrus species but that of Mastocarpus stellatus, although it is morphologically similar to C. crispus. Phylogenetic analysis based on complete 18S rDNA sequence data shows that genus Chondrus includes 3 main lineages: the Northern Pacific lineage, containing C. ocellatus, C. yendoi, and C. nipponicus; C. armatus, and C. pinnulatus form the sub-North Pacific lineage; and the Northern Atlantic Ocean lineage, comprising samples of C. crispus from Canada, Portugal, Ireland, Germany and France. The phylogenetic relationships indicate that genus Chondrus might have a North Pacific ancestral origin, radiated to North Atlantic area, and then formed the species C. crispus. 相似文献
16.
描记采于云南省沪西县城郊龙潭及阿庐古洞的金线鲃属一新种,命名为阿庐金线鲃Sinocyclocheilus aluensisL ietX iao sp.nov。新种在外形上与狭孔金线鲃S.angustiporusZhengetX iao(1985)相近,但有下列特征与之区别:1)新种头长显著大于体高;后者头长约等于体高。2)新种背鳍起点至吻端的距离大于至尾鳍基的距离;后者正相反。3)新种鳃孔大,上角超过眼上缘水平线;后者鳃孔小,上角低于眼上缘水平线。4)经线粒体细胞色素b基因测定,两者分子遗传距离为3.0%,提示是两个独立种。 相似文献
17.
描记采于贵州省荔波县茂兰自然保护区范围内一地下河中的金线属一新种 ,以采集地县名命名荔波金线Sinocyclocheilusliboensis.sp .nov。新种外形与广西凌云金线相似 ,但前者鳃耙少 ,仅 4— 5 ,后者 9— 10 ;前者眼间距较窄 ,头长为眼间距的 3.4～ 3.6倍 ,后者 2 .4～ 3.0 (2 .8)倍 ;前者尾柄较细 ,尾柄长为尾柄高的 1.8倍 ,后者 1.3～ 1.6 (1.4 6 )倍 ;前者侧线鳞与体鳞一致 ,侧线上下鳞分别为 2 8— 30和 16— 18,后者侧线鳞大于体鳞 ,侧线上下鳞为 14— 17和 8— 11。 相似文献
18.
平原绿化在未来农林发展中具有重要地位。本文利用环境卫星(HJ-1 A/B)多时相数据,选择河南省6月冬小麦收割后的CCD数据,直接去除第二季作物,并利用4月份第一季作物播种前的CCD数据,剔除了一季作物,以及[(NDVI4月≥0.22)与(NDVI6月≥0.35)]提取平原绿化的信息,其与26个主要城市城区绿化信息进行的相关分析达到显著水平(R2=0.9166)。因此,该区的平原绿化解译效果好,而南部信阳市以一季水稻为主的地区及“水稻-冬小麦”过渡区,解译效果较差。除信阳外,由HJ-1卫星解译的河南平原绿化总面积6909.8 km2,占2010年河南省森林面积20.53%。 相似文献