Butyriboletus brunneus

Brown (reddish, yellow, or olive) cap. Yellow pores & pale yellow flesh blue quickly. Well-netted stem yellow above & pink to purple by base. Early season and late season.

SKU: Boletus speciosus var. brunneus Categories: 1. Found in Connecticut, 3. Found in Michigan, 3. Found on Long Island (New York), 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 is White, Cap Flesh is Yellow, CAP FLESH STAINING FILTERS, Cap Flesh Stains Blue, CAP SIZE FILTERS, CAP TASTE FILTERS, CAP TEXTURE FILTERS, Cap Texture is: 1- Dry & Smooth (Normal), Coniferous ("Needle-y") Trees, 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, My Mushroom's Cap is >6” Across, PORE COLOR FILTERS, PORE SIZE FILTERS, PORE STAINING FILTERS, Pores Stain Blue, Primary Cap Color is: 2- Yellow to Orange, Primary Cap Color is: 3- Red, Pink, Purple, or Orange, Primary Cap Color is: 4- Some Shade of Brown, Primary Pore Color is: 2 - Yellow to Gold, 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 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

Name in North American Boletes: Boletus speciosus var. brunneus

Genus: Butyriboletus

Genus 2: Boletus
Genus 3: Xercomus

Species: brunneus

Species 2: speciosus var. brunneus

Common Name:

Tells: Brown (reddish, yellow, or olive) cap. Yellow pores & pale yellow flesh blue quickly. Well-netted stem yellow above & pink to purple by base. Early season and late season.

Other Information: Likes hemlock. The stem skin bruises easily, and running a finger over the upper part can reveal the yellow-on-yellow netting.

Science Notes: DNA testing moved this mushroom from Boletus to a newly erected genus called “Butyriboletus” (“butyri” being latin for “butter” and this being one of the Butter Boletes).

Edibility: Good.

CHEMICAL TESTS:

NH4OH (Ammonia): Cap skin turns amber-orange to orange. Cap flesh does not react.
KOH: Cap skin and flesh both turn amber-orange to orange.
FeSO4 (Iron Salts): No data.

Links:

National Audubon Society Field guide to Mushrooms, Gary Lincoff

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Mushrooms of West Virginia and the Central Appalachians

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North American Boletes

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