Retiboletus griseus (“Gray Bolete”)

Likes oak. Dark brown bug holes w/bright yellow stains. White flesh may slowly redden. Coarse yellow-brown netting that darkens w/age. Gray (pale, brownish or dark) cap.

SKU: Boletus griseus Categories: 1. Found in Connecticut, 1. Found in Northern Illinois, 2. Found in Florida, 2. Found in New Jersey, 3. Found in Michigan, 3. Found on Long Island (New York), 4. Found in Ohio, 4. Found in Pennsylvania, 4a. Found in S.W. Pennsylvania, 5. Found in North Carolina, 5. Found in Ontario, 5. Found in W. Va. or the Central Appalachians, 6. Found in Quebec, CAP COLOR FILTERS, CAP FLESH COLOR FILTERS, Cap Flesh Does Not Stain with 30 seconds, Cap Flesh is White, Cap Flesh is Yellow, CAP FLESH STAINING FILTERS, Cap Flesh Stains a Color Other than Blue, CAP SIZE FILTERS, CAP TASTE FILTERS, CAP TEXTURE FILTERS, Cap Texture is: 1- Dry & Smooth (Normal), Cap Texture is: 3- Wrinkled, Pitted or Corrugated, Cap Texture is: 5- Spiky or Scaly, Deciduous (Leafy) Trees, Edibility: 4- Good, FILTER SET #1: REGION, FILTER SET #2: CAP FEATURES, FILTER SET #3: PORE FEATURES, FILTER SET #4: STEM FEATURES, FILTER SET #5: CAP FLESH (CONTEXT) FEATURES, FILTER SET #6: SPORE PRINT, FILTER SET #7: HABITAT FILTERS, FILTER SET #8: EDIBILITY, My Mushroom is Mature & Its Pores are Tiny, My Mushroom's Cap is >0.1" Across, My Mushroom's Cap is >4” Across, PORE COLOR FILTERS, PORE SIZE FILTERS, PORE STAINING FILTERS, Pores Do Not Stain within 30 seconds, Pores Stain Other than Blue, Primary Cap Color is: 1- White, Buff, or Light Gray, Primary Cap Color is: 4- Some Shade of Brown, Primary Cap Color is: 5- Black, Dark Brown, or Dark Gray, Primary Pore Color is: 1- White, Buff, or Light Gray, Primary Pore Color is: 4 - Some Shade of Brown, Primary Stem Color is: 1- White, Buff, or Light Gray, Primary Stem Color is: 2- Yellow to Orange, Primary Stem Color is: 3- Red, Pink, Purple, or Orange, Spore Print is 1- Olive to Olive-Brown, Spore Print is 3- Pink-, Red-, Purple-, or Cinnamon-Brown, Spore Print is 4- Plain Old Brown, STEM COLOR FILTERS, STEM DECORATION/ TEXTURE FILTERS, STEM SIZE FILTERS, Stem: 4- Has Ridges, Stem: 5- Is Netted (Reticulated), Stem: Netting is WHITE, ZONE 1- the NORTHEAST, ZONE 2- the MIDWEST, ZONE 4 - the SOUTHWEST, ZONE 5 - the SOUTH

Description
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Description

Name in North American Boletes: Boletus griseus

Genus: Retiboleteus

Genus 2: Boletus
Genus 3: Xercomus

Species: griseus

Common Name: “Gray Bolete”

Tells: Likes oak. Dark brown bug holes w/bright yellow stains. White flesh may slowly redden. Coarse yellow-brown netting that darkens w/age. Gray (pale, brownish or dark) cap.

Other Information: Has an unfortunate tendency to be bug-infested, which makes the yellow-stained holes in the stem flesh a key tell. Cap may develop yellow-brownish tints w/age, and white-gray stem may develop yellow tones by base or reddish stains anywhere. Pores usually DNS but may bruise gray or brown. Likes oak. The pine-loving counterpart, Retiboletus vinaceipes, is hard to distinguish if you don’t know the tree associate. It tends to be more red than yellow at the stipe base and has netting that is slightly less coarse, but those are gradations rather than distinctions.

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

Edibility: Good.

CHEMICAL TESTS:

NH4OH (Ammonia): No data.
KOH: No data.
FeSO4 (Iron Salts): Cap flesh usually turns bluish gray.

Links:

National Audubon Society Field guide to Mushrooms, Gary Lincoff

570

Mushrooms of West Virginia and the Central Appalachians

302

North American Boletes

116

BENA

297

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