Tylopilus rubrobrunneus (“Reddish Brown Bitter Bolete”)

Purple cap ages toward brownish. White flesh tastes bitter. Buff to brown stem turns gray-green from handling.

SKU: Tylopilus rubrobrunneus Categories: 1. Cap Tastes Bitter, Acrid, Astringent, or Peppery, 1. Found in Connecticut, 1. Found in Northern Illinois, 2. Found in Kansas, 2. Found in New Jersey, 3. Found in Louisiana, 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 W. Va. or the Central Appalachians, 6. Found in Eastern Texas, 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 STAINING FILTERS, CAP SIZE FILTERS, CAP TASTE FILTERS, CAP TEXTURE FILTERS, Cap Texture is: 1- Dry & Smooth (Normal), Cap Texture is: 4- Cracked Beyond Environmental Effects, Coniferous ("Needle-y") Trees, Deciduous (Leafy) Trees, Edibility: 2-Bitter, 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's Cap is >0.1" Across, My Mushroom's Cap is >4” Across, My Mushroom's Cap is >6” Across, My Mushroom's Cap is >8” Across, PORE COLOR FILTERS, PORE SIZE FILTERS, PORE STAINING FILTERS, Pores Stain Other than Blue, Primary Cap Color is: 3- Red, Pink, Purple, or Orange, Primary Cap Color is: 4- Some Shade of Brown, Primary Pore Color is: 1- White, Buff, or Light Gray, Primary Pore Color is: 3 - Red, Pink, Purple or Orange, Primary Pore Color is: 4 - Some Shade of Brown, Primary Stem Color is: 1- White, Buff, or Light Gray, Primary Stem Color is: 4- Some Shade of 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 Is Bulbous, STEM SIZE FILTERS, Stem: 1- Has No Significant Ornaments, Stem: 5- Is Netted (Reticulated), ZONE 1- the NORTHEAST, ZONE 2- the MIDWEST, ZONE 5 - the SOUTH

Description
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Description

Genus: Tylopilus

Species: rubrobrunneus

Common Name: “Reddish Brown Bitter Bolete”

Tells: Purple cap ages toward brownish. White flesh tastes bitter. Buff to brown stem turns gray-green from handling.

Other Information: Brown-staining pores age from pale gray to buff, to pinkish, & then to dingy brown or pinkish-brown. Any netting will be at the very top of the stem. T. plumbeoviolaceus has a much purpler stem, and T. violatinctus bruises violet on top of the cap and also has more pink/purple in the stem.

Edibility: Too bitter to eat but useful for unique approaches like cocktail bitters. It isn’t toxic; just absurdly bitter.

CHEMICAL TESTS:

NH4OH (Ammonia): Purple parts of the cap skin lighten to pinkish brown. Stem skin turns mahogany-red. Cap flesh has no reaction.
KOH: Purple parts of the cap skin lighten to pinkish brown. Stem skin turns mahogany-red. Cap flesh has no reaction.
FeSO4 (Iron Salts): Cap skin has no reaction. Stem skin turns olive-green. Cap flesh turns pink to purplish buff.

Links:

National Audubon Society Field guide to Mushrooms, Gary Lincoff

592

Mushrooms of West Virginia and the Central Appalachians

340

North American Boletes

271

BENA

395

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