10.6084/m9.figshare.7089137.v1 Gang Wu Gang Wu Serena M. L. Lee Serena M. L. Lee Egon Horak Egon Horak Zhu L. Yang Zhu L. Yang <i>Spongispora temakensi</i>s, a new boletoid genus and species from Singapore Taylor & Francis Group 2018 Basidiospore ornamentation bolete Dipterocarpaceae Leccinoideae RPB1 RPB2 TEF1 tropical Asia 2 new taxa 2018-09-14 15:40:20 Dataset https://tandf.figshare.com/articles/dataset/_i_Spongispora_temakensi_i_s_a_new_boletoid_genus_and_species_from_Singapore/7089137 <p>Dipterocarp forests are a typical and widespread type of vegetation in tropical lowlands of southeast Asia that harbor a high diversity of ectomycorrhizal fungi, including boletes. Based on molecular and morphological characters, a unique bolete found in Singapore associated with the dipterocarp <i>Hopea odorata</i> was proven to represent a new species in the proposed new genus <i>Spongispora</i>. Phylogenetic analyses of five loci indicate that <i>Spongispora</i> is nested in the subfamily Leccinoideae of the Boletaceae, most closely related to an inclusive clade of <i>Leccinum, Leccinellum, Octaviania, Rossbeevera</i>, and <i>Turmalinea</i>. However, genetic distances between <i>Spongispora</i> and genera in Leccinoideae are mostly higher than that between any two known genera in this subfamily, which supports the proposal of a new genus. <i>Spongispora temasekensis</i> is characterized by a whitish to pale yellow hymenophore that stains brown where injured, coarsely reticulate stipe, interwoven trichodermial pileipellis, and broadly elliptical to ovoid basidiospores with sponge-like ornamentation perforated by irregular clefts, cracks, and warts under scanning electron microscopy. Morphological descriptions, illustrations, and comparisons with allied taxa are made, and a key to the genera of the subfamily Leccinoideae is provided.</p>