Navicula sinicomeniscus sp. nov. (Bacillariophyta; Naviculaceae), a new species from southwestern China

QIAO-ZHI XIAO; JI-SHU GUO; ZHENG-BIN TANG; JOHN PATRICK KOCIOLEK; YAN-LING LI

doi:10.11646/phytotaxa.591.4.1

Issue: Vol. 591 No. 4: 11 April 2023

Type: Article

Published: 2023-04-11

DOI: 10.11646/phytotaxa.591.4.1

Page range: 241-252

Abstract views: 78

PDF downloaded: 5

Navicula sinicomeniscus sp. nov. (Bacillariophyta; Naviculaceae), a new species from southwestern China

QIAO-ZHI XIAO⁺⁻
JI-SHU GUO⁺⁻
ZHENG-BIN TANG⁺⁻
JOHN PATRICK KOCIOLEK⁺⁻
YAN-LING LI⁺⁻

Institute for Ecological Research and Pollution Control of Plateau Lakes, School of Ecology and Environmental Science, Yunnan University, Kunming 650500, P. R. China.

Museum of Natural History and Department of Ecology and Evolutionary Biology, University of Colorado, Boulder, Colorado-80309, USA.

Institute for Ecological Research and Pollution Control of Plateau Lakes, School of Ecology and Environmental Science, Yunnan University, Kunming 650500, P. R. China.

diatoms morphology Navicula new species taxonomy Algae

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Abstract

Based on light and scanning electron microscopy observations, Navicula sinicomeniscus sp. nov. is described here as a new species from oligotrophic Lake Fuxian in Yunnan Province, China. Characteristics of this new species used to assign it to the genus Navicula include filiform, almost straight to slightly curved raphe structure, lineolate striae, and a row of visible, horizontal areolae positioned on the valve mantle at the apices. The key diagnostic features between the new species and other similar species include: valve shape and size, stria and areola densities, as well as the straightness or degree of bending of the raphe. Comparison with morphologically similar species is discussed in detail. These results can help us further understand the morphological and ecological information of the genus Navicula in Fuxian Lake.

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