Cyanoboletus bessettei (“Swamp Fox”)

Reddish- or buff-brown cap pales from the edge in. Pale yellow flesh bruises blue-green, fading to peach & then dull pinkish orange. Unpleasant chemical odor.

SKU: Boletus rainisii-1 Categories: 2. Cap Tastes Sour or Acidic, CAP COLOR FILTERS, CAP FLESH COLOR FILTERS, Cap Flesh is Yellow, CAP FLESH STAINING FILTERS, Cap Flesh Stains a Color Other than Blue, 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: 3- Iffy, 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 Stain Blue, 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 Pore Color is: 1- White, Buff, or Light Gray, Primary Pore Color is: 2 - Yellow to Gold, Primary Stem Color is: 2- Yellow to Orange, Primary Stem Color is: 4- Some Shade of Brown, 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 Is Thin & Stringy, STEM SIZE FILTERS, Stem: 1- Has No Significant Ornaments, ZONE 5 - the SOUTH

Description
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Description

Name in North American Boletes: N/A

Genus: Cyanoboletus

Species: bessettei

Common Name: The Swamp Fox

Tells: Reddish- or buff-brown cap pales from the edge in. Pale yellow flesh bruises blue–green, fading to peach & then dull pinkish orange. Unpleasant chemical odor.

Other Information: Cap bruises blue green, changing to olive green & then brown. Cap may taste taste slightly acidic. Pale yellow pores bruise blue–green, fading to olive. Stem is reddish brown below, pale yellow high, pinches at the base & may have vertical striations. Pale yellow stem flesh slowly bruises blue–green higher up, fading to bright chrome yellow. White mycelium. The one confirmed find occurred in an area of mixed oak and pine, in the fall.

Science Notes: A new species first published in 2021. The name honors mycologist Alan E. Bessette. This extraordinarily rare species has only been found once, in the Francis Marion National Forest in South Carolina (hence the common name).

Edibility: Unknown.

CHEMICAL TESTS:

NH4OH (Ammonia): Cap skin turns amber with an expanding blue–green outer ring. Flesh turns yellow, then pale orange.
KOH: Cap skin turns dark amber. Flesh turns yellow, then pale orange.
FeSO4 (Iron Salts): Cap skin turns pale olive. Flesh has no reaction

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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