Amanita stubbosa, a new non amatoxin nor phallotoxin-containing species within Amanita sect. Phalloideae (Amanitaceae, Agaricales), from West Africa

JEAN EVANS I. CODJIA; SEPAS SARAWI; BORIS A. OLOU; MEIKE PIEPENBRING; ZHU L. YANG; NOUROU S. YOROU

doi:10.11646/phytotaxa.592.3.5

Issue: Vol. 592 No. 3: 20 April 2023

Type: Article

Published: 2023-04-20

DOI: 10.11646/phytotaxa.592.3.5

Page range: 267-278

Abstract views: 107

PDF downloaded: 6

Amanita stubbosa, a new non amatoxin nor phallotoxin-containing species within Amanita sect. Phalloideae (Amanitaceae, Agaricales), from West Africa

JEAN EVANS I. CODJIA⁺⁻
SEPAS SARAWI⁺⁻
BORIS A. OLOU⁺⁻
MEIKE PIEPENBRING⁺⁻
ZHU L. YANG⁺⁻
NOUROU S. YOROU⁺⁻

Research Unit Tropical Mycology and Plants-Soil Fungi Interactions, Faculty of Agronomy, University of Parakou, BP 123, Parakou, Benin

Mycology Working Group, Institute of Ecology, Evolution, and Diversity, Goethe University Frankfurt, Max-von-Laue-Str. 13, 60438 Frankfurt am Main, Germany

Research Unit Tropical Mycology and Plants-Soil Fungi Interactions, Faculty of Agronomy, University of Parakou, BP 123, Parakou, Benin

Mycology Working Group, Institute of Ecology, Evolution, and Diversity, Goethe University Frankfurt, Max-von-Laue-Str. 13, 60438 Frankfurt am Main, Germany

CAS Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China. Yunnan Key Laboratory for Fungal Diversity and Green Development, Kunming 650201, Yunnan, China.

Research Unit Tropical Mycology and Plants-Soil Fungi Interactions, Faculty of Agronomy, University of Parakou, BP 123, Parakou, Benin

Amanita Africa morphology phylogeny taxonomy Fungi

Abstract

Amanita stubbosa, a new species in subclade III of A. sect. Phalloideae, is described from West Africa based on morphological and molecular evidence. The species is characterized by a white pileus covered with small white broadly adherent squamules or greyish to whitish erected, pyramidal, subconical, patchy universal veil, a slightly striate pileal margin, a marginate basal bulb, and broadly ellipsoid to ellipsoid, weakly amyloid basidiospores. Phylogenetic analyses based on three gene regions (nrLSU, RPB2, and TEF1-α) revealed that A. stubbosa is a distinct species closely related to A. bulbulosa. Moreover, A. stubbosa was reported to lack the most notorious toxins (amatoxins and phallotoxins). A detailed description, illustrations, and comparisons with morphologically and phylogenetically closely related species are provided.

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