Hortiboletus is a genus of fungi in the family Boletaceae. It was circumscribed in 2015 by Giampaolo Simonini, Alfredo Vizzini, and Matteo Gelardi. The erection of Hortiboletus follows recent molecular studies that outlined a new phylogenetic framework for the Boletaceae. Hortiboletus is derived from the Latin word hortus "garden", referring to a typical habitat of the type species, Hortiboletus rubellus. The bolete H. bubalinus, originally described as a Boletus and later placed in Xerocomus, was transferred to the genus by Bálint Dima. In 2015, Alona Yu. Biketova transferred Boletus campestris and Boletus engelii to Hortiboletus.
Hortiboletus can be separated from closely related genera by their smooth basidiospores which are not striate or truncate and with an average spore quotient (length divided by width) usually lower than or up to 2.6.
Species Image Name Year Distribution Hortiboletus amygdalinus 2016ChinaHortiboletus arduinus N.K.Zeng, H.J.Xie & W.F.Lin2020ChinaHortiboletus bubalinus 2015 (1991)Europe, North America, New ZealandHortiboletus campestris 2015 (1971)United States Hortiboletus coccyginus 2020 (1975) California and Oregon, United States Hortiboletus engelii 2015 (2001) Europe, Pakistan, United States Hortiboletus indorubellus 2016India Hortiboletus kohistanensis 2019PakistanHortiboletus napaeus N.K.Zeng, H.J.Xie, S.Jiang & Zhi Q.Liang2020 China Hortiboletus rubellus 2015 (1936) Europe Hortiboletus rupicapreus Svetash., A.V.Alexandrova, O.V.Morozova & T.H.G.Pham2021 Vietnam Hortiboletus subpaludosus 2016 (1948)China List of species from the Index Fungorum.
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