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Issue: Vol. 594 No. 4: 1 May 2023
Type: Article
Published: 2023-05-01
DOI: 10.11646/phytotaxa.594.4.6
Page range: 292-300
Abstract views: 137
PDF downloaded: 8

Hymenagaricus pakistanicus (Agaricaceae, Agaricales), a new species from Pakistan based on morphological and molecular evidence

Department of Plant Sciences, Quaid-i-Azam University, Islamabad, 45320, Pakistan
Department of Plant Sciences, Quaid-i-Azam University, Islamabad, 45320, Pakistan
Department of Plant Sciences, Quaid-i-Azam University, Islamabad, 45320, Pakistan
School of Food Science and Engineering, Yangzhou University, Jiangsu, China
Asia macrofungi phylogeny taxonomy Fungi

Abstract

Hymenagaricus pakistanicus, a new taxon of the family Agaricaceae from District Karak, is described based on morphology and molecular phylogeny. It is characterized macroscopically by a broad flat pileus with squamules located in the center along with some minute scattered squamules towards the margin, and microscopically by yellowish brown basidiospores. Additionally, the striate margin and absence of an annulus distinguish H. pakistanicus from other known taxa of Hymenagaricus. The new species forms a separate independent clade within Hymenagaricus in the phylogenetic analysis further supporting its uniqueness. We present the new species with illustrated morphological description and comparison with closely related taxa. Previously, only one species of this genus, H. alphitochrous, had been reported from Pakistan.

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