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Dmitry Chudaev; Anton Georgiev

doi:10.11646/phytotaxa.243.2.9

Issue: Vol. 243 No. 2: 12 January 2016

Type: Correspondence

Published: 2016-01-11

DOI: 10.11646/phytotaxa.243.2.9

Page range: 180–184

Abstract views: 29

PDF downloaded: 2

**New taxa of Navicula sensu stricto (Bacillariophyta, Naviculaceae) from high-altitude lake in Tibet, China**

Dmitry Chudaev⁺⁻
Anton Georgiev⁺⁻

Faculty of Biology, M.V. Lomonosov Moscow State University, Leninskie Gory, 1, building 12, Moscow, 119991, Russia

Navicula diatoms taxonomy lakes Tibet Asia Algae

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Abstract

A new species and a new variety belonging to the diatom genus Navicula are described from a high-altitude lake in Tibet, China. Both taxa were studied under light and scanning electron microscopy. Comparisons with morphologically similar taxa are provided. Navicula gololobovae sp. nov. resembles N. schweigeri, N. capitatoradiata, N. subalpina, N. krammeriae and N. arkona. Navicula cryptofallax var. tibetica var. nov. is compared with the nominate variety of the species and N. cryptocephala. The unique sets of morphological characters observed in our new taxa allow their unambiguous separation from similar taxa.