New Boletaceae taxa from Guyana: Binderoboletus segoi gen. and sp. nov., Guyanaporus albipodus gen. and sp. nov., Singerocomus rubriflavus gen. and sp. nov., and a new combination for Xerocomus inundabilis. (1st January 2016)

• Record Type: Journal Article
• Authors: Henkel, Terry W.; Obase, Keisuke; Husbands, Dillon; Uehling, Jessie K.; Bonito, Gregory; Aime, M. Catherine; Smith, Matthew E.
• Is Part Of: Mycologia. Volume 108:Number 1(2016)
• Page Start: 157
• Page End: 173
• Publication Date: 2016-01-01
• Subjects: Agaricomycetes -- Boletineae -- Caesalpinioideae -- Dipterocarpaceae -- ectomycorrhizal fungi -- Guiana Shield; Mycology -- Periodicals; Mycologie -- Périodiques; Mycology; Electronic journals; Periodicals; 579.505
• DOI: 10.3852/15-075
• Languages: English
• ISSNs: 0027-5514

Abstract

Abstract : Binderoboletus segoi gen. and sp. nov., Guyanaporus albipodus gen. and sp. nov. and Singerocomus rubriflavus gen. and sp. nov. (Boletaceae, Boletales, Basidiomycota) are described from the Pakaraima Mountains and adjacent lowlands of Guyana. Xerocomus inundabilis, originally described from the central Brazilian Amazon and based solely on the type collection, is redescribed from numerous collections from Guyana and transferred into Singerocomus . These boletes occur in Neotropical forests dominated by ectomycorrhizal trees in the genera Dicymbe (Fabaceae subfam. Caesalpinioideae), Aldina (Fabaceae subfam. Papilionoideae) and Pakaraimaea (Dipterocarpaceae). Three of the species were repeatedly found in a multiyear sporocarp survey in Dicymbe corymbosa -monodominant forest. Macromorphological, micromorphological, habitat and multilocus DNA sequence data are provided for each species. A molecular phylogenetic analysis based on a large taxon set across the Boletaceae justifies erection of the new genera.