Bothia is described as a new genus in the Boletaceae based on Boletinus castanellus described by C.H. Peck from eastern North America. A widespread, occasionally encountered taxon, Bothia castanella possesses a combination of macro- and microscopic features that has prompted past placement in seven different genera. Yet, as a species it is readily recognizable with its chestnut brown, dry pileus, decurrent, pale brown hymenophore with radially elongated tubes, a short, sometimes eccentric, exannulate stipe, yellow brown spore deposit and constant association with Quercus. Phylogenetic analyses of large subunit rDNA and BLAST searches using the ITS region confirm the placement of B. castanella as a unique generic lineage in the Boletaceae.
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Erratum: Corrigendum: Vadthanarat S, Raghoonundon B, Lumyong S, Raspé O (2024) , a new genus to accommodate , and a new species (Xerocomoideae, Boletaceae) from Thailand. MycoKeys 103: 129-165. https://doi.org/10.3897/mycokeys.103.107935.
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School of Science, Mae Fah Luang University, Chiang Rai, 57100, Thailand.
[This corrects the article DOI: 10.3897/mycokeys.103.
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School of Pharmaceutical Sciences and Yunnan Key Laboratory of Pharmacology for Natural Products, Kunming Medical University, Kunming 650500, China.
Previous studies have shown that boletes are abundant and diverse in China, especially in tropical and subtropical regions. In the present study, morphological, ecological, host relationship, and a four-locus (28S, , , and ) molecular phylogenetic analyses were used to study the family in subtropical and tropical China. Four new bluing species are described from three genera, viz.
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School of Science, Mae Fah Luang University, Chiang Rai, 57100, Thailand.
A new genus, is established to accommodate based on multiple protein-coding genes (6, 3, 1, and 2) analyses of a wide taxon sampling of Boletaceae. In our phylogeny, the new genus was sister to in subfamily Xerocomoideae, phylogenetically distant from , which was highly supported as sister to in the same subfamily Xerocomoideae. is different from other genera in Boletaceae by the following combination of characters: rugulose to subrugulose pileus surface, white pores when young becoming pale yellow in age, subscabrous stipe surface scattered with granulose squamules, white basal mycelium, unchanging color in any parts, yellowish brown spore print, and broadly ellipsoid to ellipsoid, smooth basidiospores.
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is described as a new porphyrellus-like genus of to accommodate , a dark brown to dull lilac/violet, or rarely, nearly black bolete with a series of oxidation reactions progressing from blue to red then nearly black and a dark brown spore deposit. Idiosyncratic blue-green pigment encrustations (cyanogranules) and a similarly colored reaction of the hyphae located on pileus and stipe surfaces are also diagnostic. Phylogenetic analyses of nuclear large-subunit rDNA (nrLSU), translation elongation factor 1-alpha (), and the second largest subunit of RNA polymerase II () infer as a unique generic lineage with two species, one of which is newly described (.
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