Stemonitis amphorocolumella (Stemonitidaceae, Myxomycetes), a new species from Western Siberia

ANASTASIA V. VLASENKO; GABRIEL H. MORENO; VYACHESLAV A. VLASENKO

doi:10.11646/phytotaxa.592.1.5

Issue: Vol. 592 No. 1: 13 April 2023

Type: Article

Published: 2023-04-13

DOI: 10.11646/phytotaxa.592.1.5

Page range: 59-67

Abstract views: 84

PDF downloaded: 5

Stemonitis amphorocolumella (Stemonitidaceae, Myxomycetes), a new species from Western Siberia

ANASTASIA V. VLASENKO⁺⁻
GABRIEL H. MORENO⁺⁻
VYACHESLAV A. VLASENKO⁺⁻

Central Siberian Botanical Garden, Siberian Branch, Russian Academy of Sciences, 630090 Novosibirsk, Russia.

Department of Life Sciences (Botany), Faculty of Sciences, University of Alcalá, 28805 Alcalá de Henares, Madrid, Spain.

Central Siberian Botanical Garden, Siberian Branch, Russian Academy of Sciences, 630090 Novosibirsk, Russia.

new species myxomycetes SEM Stemonitidales Stemonitis taxonomy

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Abstract

A new Stemonitis species from Northern Asia is described and illustrated. The species was found in the Altai Territory, Russia. This new species clearly differs from previously known species by several morphological characters. The new species and four other species of the Stemonitis genus have the thickening and widening of the column apex—Stemonitis
capillitionodosa, S. flavogenita, S. pseudoflavogenita, S. sichuanensis, which makes them a separate morphological group in the Stemonitis genus. However, four of the above listed species have warted and spinulose spore ornamentations, whereas the new species spore ornamentations are reticulate. The peridium of the new species is partially preserved in the form of a filmy collar at the base of the sporotheca, whereas the peridium of Stemonitis capillationodosa, S. flavogenita, S. pseudoflavogenita and S. sichuanensis is always fugacious.

Scanning electron microfotographs of a new species of the Stemonitis genus and an updated original identification key for species of this genus around the world, which currently includes 23 taxa, are presented.

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