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Issue: Vol. 243 No. 2: 12 January 2016
Type: Article
Published: 2016-01-11
DOI: 10.11646/phytotaxa.243.2.4
Page range: 147–154
Abstract views: 33
PDF downloaded: 1

Amanita rufobrunnescens, a new species of Amanita section Amidella from South China

Guangdong Provincial Public Laboratory of New Microbial Application Technology, Guangdong Key Laboratory of Microbial Culture Collection and Application, Guangdong; State Key Laboratory of Applied Microbiology (Ministry-Guangdong Province Jointly Breeding Base) South China; Guangdong Institute of Microbiology, Guangdong Guangzhou, 510070, China
Guangdong Provincial Public Laboratory of New Microbial Application Technology, Guangdong Key Laboratory of Microbial Culture Collection and Application, Guangdong; State Key Laboratory of Applied Microbiology (Ministry-Guangdong Province Jointly Breeding Base) South China; Guangdong Institute of Microbiology, Guangdong Guangzhou, 510070, China
Guangdong Provincial Public Laboratory of New Microbial Application Technology, Guangdong Key Laboratory of Microbial Culture Collection and Application, Guangdong; State Key Laboratory of Applied Microbiology (Ministry-Guangdong Province Jointly Breeding Base) South China; Guangdong Institute of Microbiology, Guangdong Guangzhou, 510070, China
Agaricales Amanitaceae molecular phylogeny taxonomy Fungi South China

Abstract

Amanita rufobrunnescens is described as a new species in the subgenus Lepidella section Amidella from Guangdong Province, China. It is characterized by whitish basidiomes that bruise reddish brown, brownish sub-membranous to fibrillose volval remnants on the pileus, a striate pileus margin, white lamellae with truncate lamellulae, grayish orange to light brown volva, amyloid basidiospores that are ellipsoid to elongate (9.5–)10–12(–13) × (5–)5.5–6.5(–7) µm, and 5–10 μm wide pileipellis hyphae with yellowish vacuolar pigments. There are no clamp connections. Molecular phylogenetic analyses based on the nuclear ribosomal large subunit of nuclear ribosomal DNA (LSU) and internal transcribed spacer (ITS) sequences reveal that A. rufobrunnescens is a distinct species.