Two new species of Witkowskia (Bacillariophyceae, Cymbellales) from Mongolia and Russia

被引：0

作者：

Mironov, Andrei ^{[1
,2
]}

Glushchenko, Anton ^{[1
]}

Genkal, Sergei ^{[3
]}

Iurmanov, Anton ^{[1
]}

Kociolek, John Patrick ^{[4
]}

Nergui, Soninkhishig ^{[5
]}

Kulikovskiy, Maxim ^{[1
]}

机构：

[1] IPP RAS, RAS, KA Timiryazev Inst Plant Physiol, 35 Botanicheskaya St, Moscow 127276, Russia

[2] MV Lomonosov Moscow State Univ, Fac Biol, Leninskie Gory 1,Bldg 12, Moscow 119234, Russia

[3] Papanin Inst Biol Inland Waters RAS, IBIW RAS, Borok 152742, Russia

[4] Museum Nat Hist, Boulder, CO 80309 USA

[5] Natl Univ Mongolia, Sch Arts & Sci, Dept Biol, Ulaanbaatar 14201, Mongolia

来源：

NOVA HEDWIGIA | 2025年 / 120卷 / 1-4期

基金：

俄罗斯科学基金会;

关键词：

Bacillariophyceae; Cymbellales; Witkowskia; Mongolia; new species; taxonomy;

D O I：

10.1127/nova_hedwigia/2025/1017

中图分类号：

Q94 [植物学];

学科分类号：

071001 ;

摘要：

Two previously undescribed diatom species of the recently erected genus Witkowskia are identified in samples from aquatic ecosystems in Mongolia and Russia. The first is named Witkowskia shishmarevii sp. nov. and described using light and scanning electron microscopy. Size and shape of the valves, in addition to striae densities, diagnose this species and distinguish it from congeners. A second species found in the samples from Russia and Mongolia is morphologically similar to Placoneis gastrum sensu Cox. The lectotypification of Placoneis gastrum proposed by Cox is illegitimate. As the genus Placoneis has been recently re-evaluated and sub-divided, the second species, Witkowskia murzaevii sp. nov. is Placoneis gastrum sensu Cox and distinguished by its valve shape and striae orientation as well as density. Both Witkowskia shishmarevii sp. nov. and W. murzaevii sp. nov. are compared to other species in the genus.

引用

页码：79 / 94

页数：16

共 18 条

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