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Published on: July 14, 2018
Ulnariashun-biseriata sp. nov. (Bacillariophyta) from the Shun River in Hunan Province, China
Yan Zheng1, Bing Liu1, Patrick Rioual2,3
1College of Biology and Environmental Sciences, Jishou University, Jishou 416000, China Jishou University Jishou China.
Abstract:
A new species, Ulnariashun-biseriata sp. nov., was found in the Shun River of Hunan Province, southern China, and its morphology was described based on light and scannning electron microscope obervations. Ulnariashun-biseriata is characterized by its lanceolate valve outline, apiculate valve apices, slightly undulate valve margins, mostly biseriate striae, variable central area, and closed valvocopula. Many abnormal valves of U.shun-biseriata were observed in the samples investigated and the most frequent morphological abnormalities consisted of a lack of symmetry relative to the apical axis caused by a unilateral expansion in the middle part of the valve.
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