Xanthoconium affine

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Xanthoconium affine is an edible mushroom that can be found July-October. It is mycorrhizal with hardwood trees, especially beech and oak.
The cap is dark brown or reddish-brown, turning yellowish-brown. Pores are white, becoming pale yellow. The mushroom does not stain blue. The stem is streaked with a color that is paler than the cap. The base of the stem is white and tapered. Spore print is rusty yellow brown.
There are several varieties of Xanthoconium affine. One variety (var. maculosus) has whitish to yellowish spots on its cap. This variety has the common name “Spotted bolete”. Another variety (var. reticulatum) is reticulate at the apex.
 
Xanthoconium affine could be confused with Xanthoconium purpureum which has a maroon or reddish-brown cap and a yellowish-brown stem that has a reddish-brown net at the apex. Xanthoconium purpureum is also edible.
Xanthoconium affine is considered a choice edible mushroom when it can be found bug free.

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Written by Amy Demers, founder of the Connecticut Foraging Club. To learn more about foraging in Connecticut, check out our upcoming classes.

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