KMS Nanjing Institute of Geology and Palaeonotology,CAS
ANATOMICALLY PRESERVED MARATTIALEAN PLANTS FROM THE UPPER PERMIAN OF SOUTHWESTERN CHINA: THE TRUNK OF PSARONIUS LAOWUJIENSIS SP NOV. | |
He, Xiaoyuan2; Jin, Jianhua2; Wang, Shijun1,3; Fu, Xiaoping4; Li, Nan4; Li, Yong4 | |
2010-07-01 | |
发表期刊 | INTERNATIONAL JOURNAL OF PLANT SCIENCES |
ISSN | 1058-5893 |
卷号 | 171期号:6页码:662-678 |
摘要 | A marattialean trunk of Psaronius laowujiensis sp. nov. is described from the Upper Permian of the Xuanwei Formation, Panxian County, Guizhou Province, South China. The specimen most likely represents the lower part of the trunk, because the preserved thickness of the root mantel is somewhat larger than the diameter of the stem. Meristeles of the stem are arranged in approximately five tangential stelar cycles but not in radial files. Inner meristeles are in small number, similar to 12-13, and loosely arranged. Leaf traces diverge helically and are organized in a 2/5 phyllotaxy. The leaf base vascular configuration consists of three strands that include a large U-shaped, centrifugal strand, a small centripetal strand, and an inverted V-shaped internal strand. A vascular bundle sheath one or two cell layers thick surrounds each meristele. Within the centripetal concavity of each peripheral cauline bundle there are anchor-shaped sclerenchymatous strands. Ground tissue appears to consist of aerenchymatous parenchyma, in which secretory cavities are dispersed. Bound roots mostly possess seven to nine protoxylem poles. The vascular bundle sheath is one or two cell layers thick. The inner cortex consists of aerenchymatous parenchyma. A detailed comparison of the present specimen with known species of Psaronius from the Permian of South China is made. Our specimen is similar to Psaronius wangii in many aspects, but the two can be clearly distinguished by the structure of the ground tissue of the stem and the leaf base vascular configuration, which leads to the erection of a new species, P. laowujiensis, for this specimen. Certain important characters in species from the Permian of South China are discussed. The tree-or anchor-shaped sclerenchymatous configuration within the centripetal concavity of the peripheral cauline bundles is unique to species from the South China Permian. The permanent vascular bundle sheath surrounding the meristeles of the stem and the stele of the root is another remarkable feature of those species. The analogous tissue, termed "inner cortex" by certain authors, is also present in some Psaronius from the Euramerican and North China floras, but in those cases it is thinner walled and not as remarkable as the vascular bundle sheath in the species from South China. The leaf base vascular configuration of the species from the Permian in South China is more diverse than those from other places. |
关键词 | Marattiales Psaronius anatomy Permian South China |
DOI | 10.1086/653144 |
语种 | 英语 |
关键词[WOS] | SOUTHERN CHINA ; FERN |
资助项目 | National Natural Science Foundation of China[30670140] ; State Key Laboratory of Palaeobiology and Stratigraphy, NIGP, CAS[073103] ; China Postdoctoral Science Foundation[20090460820] |
WOS研究方向 | Plant Sciences |
WOS类目 | Plant Sciences |
WOS记录号 | WOS:000279042600004 |
项目资助者 | National Natural Science Foundation of China ; State Key Laboratory of Palaeobiology and Stratigraphy, NIGP, CAS ; China Postdoctoral Science Foundation |
出版者 | UNIV CHICAGO PRESS |
文献类型 | 期刊论文 |
条目标识符 | http://ir.nigpas.ac.cn/handle/332004/357 |
专题 | 中国科学院南京地质古生物研究所 |
通讯作者 | Wang, Shijun |
作者单位 | 1.Chinese Acad Sci, Inst Bot, State Key Lab Systemat & Evolutionary Bot, Beijing 100093, Peoples R China 2.Sun Yat Sen Univ, Guangzhou 510275, Guangdong, Peoples R China 3.Chinese Acad Sci, Nanjing Inst Geol & Palaeontol, State Key Lab Palaeobiol & Stratig, Nanjing 210008, Peoples R China 4.Shenzhen Fairy Lake Bot Garden, Shenzhen 518004, Peoples R China |
通讯作者单位 | 中国科学院南京地质古生物研究所 |
推荐引用方式 GB/T 7714 | He, Xiaoyuan,Jin, Jianhua,Wang, Shijun,et al. ANATOMICALLY PRESERVED MARATTIALEAN PLANTS FROM THE UPPER PERMIAN OF SOUTHWESTERN CHINA: THE TRUNK OF PSARONIUS LAOWUJIENSIS SP NOV.[J]. INTERNATIONAL JOURNAL OF PLANT SCIENCES,2010,171(6):662-678. |
APA | He, Xiaoyuan,Jin, Jianhua,Wang, Shijun,Fu, Xiaoping,Li, Nan,&Li, Yong.(2010).ANATOMICALLY PRESERVED MARATTIALEAN PLANTS FROM THE UPPER PERMIAN OF SOUTHWESTERN CHINA: THE TRUNK OF PSARONIUS LAOWUJIENSIS SP NOV..INTERNATIONAL JOURNAL OF PLANT SCIENCES,171(6),662-678. |
MLA | He, Xiaoyuan,et al."ANATOMICALLY PRESERVED MARATTIALEAN PLANTS FROM THE UPPER PERMIAN OF SOUTHWESTERN CHINA: THE TRUNK OF PSARONIUS LAOWUJIENSIS SP NOV.".INTERNATIONAL JOURNAL OF PLANT SCIENCES 171.6(2010):662-678. |
条目包含的文件 | ||||||
文件名称/大小 | 文献类型 | 版本类型 | 开放类型 | 使用许可 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论