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Issue: Vol. 650 No. 3: 29 May 2024
Type: Article
Published: 2024-05-29
DOI: 10.11646/phytotaxa.650.3.8
Page range: 277-284
Abstract views: 31
PDF downloaded: 1

Mallomonas paraperfossa sp. nov. (Chrysophyceae, Synurales), a new species from the shallow ephemeral ponds in the steppe zone of the Southern Urals, Russia

Institute for Cellular and Intracellular Symbiosis of the Ural Branch of the Russian Academy of Sciences of the Orenburg Federal Research Center RAS, Pionerskaya Street, 11, 460000, Orenburg, Russia
A.N. Severtsov Institute of Ecology and Evolution, Russian Academy of Sciences, Leninsky Prospect, 33, 119071, Moscow, Russia
Institute for Cellular and Intracellular Symbiosis of the Ural Branch of the Russian Academy of Sciences of the Orenburg Federal Research Center RAS, Pionerskaya Street, 11, 460000, Orenburg, Russia
Mallomonas new species silica-scaled chrysophytes Southern Urals Algae

Abstract

This paper describes a new species of Mallomonas, discovered in small ephemeral waterbodies of the steppe zone of the Southern Urals (Russia). The species description is based on scale morphology studied using scanning and transmission electron microscopy. Mallomonas paraperfossa sp. nov. is most similar to M. perfossa from the section Pseudocoronatae. A comparison was also made with the species M. lelymene and M. sabulosa. The scales of M. paraperfossa are characterized by the presence of rimmed depressions and papillae, randomly located on the shield, and wide and raised anterior flanges with parallel, evenly spaced ribs.

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