Suillus brunnescens (“Western Slippery Jack”)

Viscid, oft-streaked white cap ages to yellow-, lilac- or dark-brown. White stem yellows on top w/age. Cap & stem base bruise red-brown, resolving to brown.

SKU: Suillus brunnescens Categories: 1. Found in the Pacific Northwest, 2. Found in California, 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: 2- Viscid, Sticky, Slimy or Slick, Coniferous ("Needle-y") 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 Do Not Stain within 30 seconds, Primary Cap Color is: 1- White, Buff, or Light Gray, 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 Cap Color is: 5- Black, Dark Brown, or Dark Gray, Primary Pore Color is: 1- White, Buff, or Light Gray, Primary Pore Color is: 2 - Yellow to Gold, 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, Spore Print is 4- Plain Old Brown, STEM COLOR FILTERS, STEM DECORATION/ TEXTURE FILTERS, STEM SIZE FILTERS, Stem: 1- Has No Significant Ornaments, Stem: 7- Is Notably Dotted and/or Spotted, ZONE 3- the FAR WEST, ZONE 4 - the SOUTHWEST

Description
Discussions

Description

Name in North American Boletes: Suillus brunescens AND Suillus borealis

Genus: Suillus

Species: brunnescens

Common Name: Western Slippery Jack

Tells: Viscid, oft-streaked white cap ages to yellow-, lilac- or dark-brown. White stem yellows on top w/age. Cap & stem base bruise red-brown, resolving to brown.

Science Notes: DNA evidence has merged Suillus brunnescens with Suillus borealis.

Other Information: White cap flesh ages to yellow from the stem out, & DNS. Yellow-buff pores age toward yellow-brown, & DNS. Likes pines.

Edibility: Good.

CHEMICAL TESTS:

NH4OH (Ammonia): Cap flesh turns pink.
KOH: Cap flesh turns pink.
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

228 (borealis)

230 (brunnescens)

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