Xerocomus hypoxanthus

Yellow pores DNS or bruise blue-greenish & can be huge, esp. by the stem. Oft-velvety, brownish (tawny-, red-, pale yellow-, to orange-) cap may crack w/age.

Description

Name in North American Boletes: Boletus hypoxanthus

Genus: Xercomus

  • Genus 2: Boletus

Species: hypoxanthus

Common Name:

Tells: Yellow pores DNS or bruise blue-greenish & can be huge, esp. by the stem. Oft-velvety, brownish (tawny-, red-, pale yellow-, to orange-) cap may crack w/age.

Other Information: Yellowish cap flesh DNS or may blue slightly. Yellow to buff-tawny stem is yellow on top & often at the base, & may have brownish powder-dots over the midsection. Likes oaks but not exclusively. Will grow on decaying trunks too.

Science Notes: DNA testing moved this mushroom into the newly erected genus “Xerocomus.”

Edibility: Unknown.

CHEMICAL TESTS:

  • NH4OH (Ammonia): Cap skin turns blue-green. Cap flesh turns blue to bluish.
  • KOH: Cap skin turns blue-green.
  • FeSO4 (Iron Salts): No data.

Links:

National Audubon Society Field guide to Mushrooms, Gary Lincoff 0 Mushrooms of West Virginia and the Central Appalachians 0 North American Boletes 121 422

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