Neoporphyrellus alboater (“Black Velvet Bolete”)

Velvety black cap. Oft-swollen or bulbous stem echoes the cap color. Pores & white cap flesh usually stain pink, then become dark.

SKU: Tylopilus alboater Categories: 1. Found in Alabama, 1. Found in Connecticut, 1. Found in Northern Illinois, 2. Found in Florida, 2. Found in New Jersey, 3. Found in Louisiana, 3. Found in Michigan, 3. Found on Long Island (New York), 4. Found in Mississippi, 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 Indiana, CAP COLOR FILTERS, CAP FLESH COLOR FILTERS, Cap Flesh Does Not Stain with 30 seconds, Cap Flesh is White, 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: 4- Cracked Beyond Environmental Effects, Deciduous (Leafy) Trees, Edibility: 5- Choice, 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 Do Not Stain within 30 seconds, Pores Stain Other than Blue, Primary Cap Color is: 3- Red, Pink, Purple, or Orange, 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: 3 - Red, Pink, Purple or Orange, Primary Stem Color is: 3- Red, Pink, Purple, or Orange, Primary Stem Color is: 5- Black, Dark Brown, or Dark Gray, 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: 1- Has No Significant Ornaments, ZONE 1- the NORTHEAST, ZONE 2- the MIDWEST, ZONE 5 - the SOUTH

Description
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Description

Genus: Neoporphyrellus

Genus 2: Tylopilus

Species: alboater

Common Name: “Black Velvet Bolete”

Tells: Velvety black cap. Oft-swollen or bulbous stem echoes the cap color. Pores & white cap flesh usually stain pink, then become dark.

Other Information: The cap may have a whitish or purplish bloom when very young, & can crack in age. Pores start out bright white & slowly age toward pinkish. Both the pores and cap flesh usually stain pink before turning dark, but the staining doesn’t always happen in extreme youth or age. Likes oak.

Science Notes: This well known and delicious species was moved out of Tylopilus in late 2025, and transferred to the new genus Neoboletus (which also has pink spores).

Edibility: Choice.

CHEMICAL TESTS:

NH4OH (Ammonia): Cap skin does not react. Cap flesh turns olive before shifting to brownish orange.
KOH: Cap skin turns amber-orange. Cap flesh turns pinkish orange.
FeSO4 (Iron Salts): Cap skin has no reaction. Cap flesh instantly turns grayish- to greenish- blue.

Links:

National Audubon Society Field guide to Mushrooms, Gary Lincoff

590

Mushrooms of West Virginia and the Central Appalachians

337

North American Boletes

256

BENA

366

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