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Family:

Boletaceae (Basidiomycota)

Accepted Name:

This name is currently accepted.

Description:

Diagnosis: Pileus dry, glabrous to subtomentose, microscopically a trichodermium or subhymeniform. Contextwhite, unchanging or staining pale brown, red then black, or rarely blue, with mild or bitter taste. Hymenophore adnexed, white then pinkish flesh colored to purplish brown to rusty brown, staining brown. Stipe dry, pruinose to glabrous to reticulate, to finely scabrous. Spores pinkish flesh colored to purplish brown, to rusty brown in deposit, smooth, fusoid to ovoid-phaseoliform. Hymenial cystidia present as pseudocystidia. Clamp connections. absent.

Registration number: MB 18700

Type species: Boletus felleus Bull., Herbier de la France 8: t.379. 1788.

Ectomycorrhiza: Presumed with with Pinaceae, Fagaceae, Betulaceae, Nothofagaceae, Myrtaceae, Casuarinaceae, caesalpinoid legumes.

Distribution: North Temperate, montane Neotropics, northern South America, East Asia, Southeast Asia, Australia, New Zealand, Africa.

Commentary: Some concepts have included Porphyrellus (Smith & Thiers, Wolfe); some treated the ballouioids in Rubinoboletus (Heinemann & Rammeloo, Watling), but molecular inference distinguishes Tylopilus from Porphyrellus, and embraces the ballouioids in Tylopilus.