Qinia gen.nov.(Bacillariophyceae:Cymbellales)from Yunnan Province,China  

作　　者：Yan LIU John Patrick KOCIOLEK Maxim KULIKOVSKIY Anton GLUSHCHENKO Pan YU Quanxi WANG Xinxin LU Yawen FAN 

机构地区：[1]College of Life Science and Technology,Harbin Normal University,Harbin 150025,China [2]Museum of Natural History and Department of Ecology and Evolutionary Biology,University of Colorado,Boulder,CO 80309,USA [3]K.А.Timiryazev Institute of Plant Physiology RAS,IPP RAS,Moscow 127276,Russia [4]College of Life Sciences,Shanghai Normal University,Shanghai 200234,China

出　　处：《Journal of Oceanology and Limnology》2023年第5期1965-1977,共13页海洋湖沼学报（英文）

基　　金：Supported by the National Natural Science Foundation of China (Nos.31970213,31870187);the Natural Science Foundation of Heilongjiang Province for Excellent Young Scholars (No.YQ2020C032)。

摘　　要：An interesting group of cymbelloid diatoms was collected from lakes in Yunnan Province,China,and observations on their valve morphology made using light and scanning electron microscopy.These cymbelloid species all have apical pore fields,slit-like areolae,and areolar occlusions,and they all lack of stigmata.In this paper we propose the new genus Qinia gen.nov.for these taxa and describe them as new:Q.lashii sp.nov.,Q.aequalis sp.nov.,and Q.daliensis sp.nov.The genus Qinia gen.nov.has lanceolate valves asymmetrical about their apical axes,raphe located in the middle of valve,distal raphe ends bent to the dorsal margin that bisects the apical pore fields(APFs),no stigmata,areolae with slit-like external openings and projections occluding the areolar openings internally.This genus resembles the genus Cymbella in the presence of APFs,but differs from Cymbella by a lack of stigmata,and by having external distal raphe ends that bisect the apical pore fields.Like Reimeria,the external distal raphe ends bisect the lobes of the APF,but Qinia species differ from Reimeria in that they have no stigmata and the distal raphe ends are deflected dorsally,not ventrally.Comparisons were made between Qinia and other cymbelloid genera whose members possess apical pore fields.Features that distinguish each species of the new genus are also discussed.

关 键 词：FRESHWATER new genus cymbelloid diatom FRESHWATER MORPHOLOGY 

分 类 号：Q949.2[生物学—植物学]