biostudies-literatureUnknown88Ayala-Vasquez OThe present study describes <i>Hemiaustroboletus</i> <b>gen. nov.</b> in the subfamily Austroboletoideae (Boletaceae). <i>Hemiaustroboletus</i> is supported by morphological and molecular data using LSU and RPB2 regions. Additionally, its geographic distribution and intraspecific variation were inferred using ITS sequences. The genus is characterised by pileate-stipitate basidiomata; purple, brown, reddish-brown, orange-brown to dark brown vinaceous pileus; whitish or lilac to vinaceous context and a subclavate stipe. Microscopically, it is characterised by ornamented, slightly verrucose, cracked to perforated brown basidiospores. Two species are described within the genus, <i>Hemiaustroboletusvinaceobrunneus</i> <b>sp. nov.</b> and <i>H.vinaceus</i> <b>sp. nov.</b> <i>HemiaustroboletusvinMycoKeys55-78https://www.ebi.ac.uk/biostudies/studies/S-EPMC9005474biostudies-literature<i>Hemiaustroboletus</i>, a new genus in the subfamily Austroboletoideae (Boletaceae, Boletales).PMC9005474Aguirre-Acosta EAyala-Vasquez OSaldivar AEGaribay-Orijel RGarcia-Jimenez JCastro-Rivera RAngeles-Argaiz REfalse<i>Hemiaustroboletus</i>, a new genus in the subfamily Austroboletoideae (Boletaceae, Boletales).The present study describes <i>Hemiaustroboletus</i> <b>gen. nov.</b> in the subfamily Austroboletoideae (Boletaceae). <i>Hemiaustroboletus</i> is supported by morphological and molecular data using LSU and RPB2 regions. Additionally, its geographic distribution and intraspecific variation were inferred using ITS sequences. The genus is characterised by pileate-stipitate basidiomata; purple, brown, reddish-brown, orange-brown to dark brown vinaceous pileus; whitish or lilac to vinaceous context and a subclavate stipe. Microscopically, it is characterised by ornamented, slightly verrucose, cracked to perforated brown basidiospores. Two species are described within the genus, <i>Hemiaustroboletusvinaceobrunneus</i> <b>sp. nov.</b> and <i>H.vinaceus</i> <b>sp. nov.</b> <i>Hemiaustroboletusvin2022-01-01T00:00:00Z20222026-04-08T09:56:42.253Z2025-04-05T20:39:48.447ZS-EPMC90054743558593010.3897/mycokeys.88.73951