Suillus flavidus (“Slim Jack”)

Viscid, dark or pale buff, yellow, to olive-tan cap often has a big bump in the center. Dark brown ring on whitish stem that ages to pale yellow.

SKU: Suillus flavidus Categories: 1. Found in Northern Illinois, 1. Found in the Pacific Northwest, 2. Found in California, 3. Found in Michigan, 4. Found in Pennsylvania, CAP COLOR FILTERS, CAP FLESH COLOR FILTERS, 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 Huge, My Mushroom's Cap is >0.1" Across, PORE COLOR FILTERS, PORE SIZE FILTERS, PORE STAINING FILTERS, Pores Stain Other than Blue, Primary Cap Color is: 1- White, Buff, or Light Gray, Primary Cap Color is: 2- Yellow to 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: 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 3- Pink-, Red-, Purple-, or Cinnamon-Brown, Spore Print is 4- Plain Old Brown, STEM COLOR FILTERS, STEM DECORATION/ TEXTURE FILTERS, Stem Is Thin & Stringy, STEM SIZE FILTERS, Stem: 1- Has No Significant Ornaments, Stem: 2- Is Viscid, Sticky, Slimy or Slick, Stem: 3- Has a Ring (Annulus), Stem: 7- Is Notably Dotted and/or Spotted, ZONE 1- the NORTHEAST, ZONE 2- the MIDWEST, ZONE 3- the FAR WEST, ZONE 4 - the SOUTHWEST

Description
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Description

Genus: Suillus

Species: flavidus

Species 2: umbonatus

Common Name: “Slim Jack”

Common Name 2: “Umbonate Slippery Jack”

Tells: Viscid, dark or pale buff, yellow, to olive-tan cap often has a big bump in the center. Dark brown ring on whitish stem that ages to pale yellow.

Other Information: Dull yellow pores bruise pinkish cinnamon. Pale yellow cap flesh stains dingy cinnamon. Stem has pale yellow dots ages (or bruises) to pale yellow w/pink-brown dots. Likes pines.

Edibility: Good.

CHEMICAL TESTS:

NH4OH (Ammonia): Cap skin turns wine-red. Cap flesh (but not stem flesh) turns reddish rust before shifting to gray.
KOH: Cap skin turns reddish brown.
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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