Austroboletus subflavidus

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Ecology: Mycorrhizal with oaks; usually appearing in pine-oak woods; growing alone, scattered, or gregariously; summer and fall; distributed from New Jersey to Florida and Texas; also known from the Caribbean and Central America. The illustrated and described collection is from Georgia.

Cap: 6 cm across; convex; tacky; finely velvety; whitish.

Pore Surface: Whitish; not bruising; with 1-2 angular pores per mm; tubes to 1 cm deep.

Stem: 9 cm long; 1.5 cm thick; more or less equal; whitish, stained pale yellow in places; curved at the base; coarsely pocketed-reticulate; basal mycelium white.

Flesh: Whitish overall, but yellow in the stem base; unchanging when sliced.

Odor and Taste: Odor not distinctive; taste reported as bitter.

Microscopic Features: Spores 15-18 x 6.5-8 ; boletoid-fusiform; finely pimply-verrucose; dull golden in KOH. Hymenial cystidia scattered and inconspicuous, scarcely projecting; to 35 x 7.5 m; fusiform; thin-walled; smooth; hyaline in KOH. Pileipellis a collapsing trichoderm of hyaline, smooth elements 5-7.5 wide; terminal cells cylindric, with to subclavate rounded apices.

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