Xerocomus ferrugineus

Creamy white-yellow flesh w/a thin red line by the skin. Bug holes are often pink. Yellow pores darken w/age & often stain blue-green (rarely cinnamon). Deep tubes.

SKU: Boletus spadiceus Categories: 1. Found in Connecticut, 1. Found in Northern Illinois, 1. Found in the Pacific Northwest, 2. Found in California, 2. Found in Florida, 2. Found in Kansas, 2. Found in New Jersey, 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, 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 Flesh Stains 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, 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 Huge, 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 Do Not Stain within 30 seconds, Pores Stain Blue, Pores Stain Other than 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 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, 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 Thin & Stringy, STEM SIZE FILTERS, Stem: 1- Has No Significant Ornaments, Stem: 4- Has Ridges, Stem: 5- Is Netted (Reticulated), ZONE 1- the NORTHEAST, ZONE 2- the MIDWEST, ZONE 3- the FAR WEST, ZONE 4 - the SOUTHWEST, ZONE 5 - the SOUTH

Description
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Description

Name in North American Boletes: Boletus spadiceus x3 (spadiceus var. spadiceus, var. gracilis, & var. rufobrunneus)

Genus: Xerocomus

Genus 2: Boletus

Species: ferrugineus

Species 2: spadiceus var. spadiceus
Species 3: spadiceus var. gracilis
Species 4: spadiceus var. rufobrunneus

Common Name:

Tells: Creamy white-yellow flesh w/a thin red line by the skin. Bug holes are often pink. Yellow pores darken w/age & often stain blue-green (rarely cinnamon). Deep tubes.

Other Information: “Rusty Iron” to brownish cap may lean yellowish & often cracks or fissures w/age. (The California version typically has a red-, chestnut-, or liver-brown cap). Stem is most often ridged at the top, sometimes clear & sometimes in a coarse netting pattern – stem decoration is an iffy guide for this one. Prefers conifers, but can sometimes be found with leafy trees. Easy to confuse with Xerocomus tenax and illudens.

Science Notes: DNA tests merged what had formerly been called three separate species: B. spadiceus, spadiceus var. gracilis, and a West Coast version called spadiceus var. rufobrunneus. This surviving, combined species was then renamed from “spadiceus” to ferrugineus for reasons that probably make sense to the very smart people who did it, but causes nothing except confusion in the rest of us. [Sigh]. The three had been divided up because of morphological (physically apparent) differences. Now that the DNA confirms they are one and the same, we’re left with a single species that has tremendous variability.

Edibility: Good.

CHEMICAL TESTS:

NH4OH (Ammonia): Cap skin flashes green (sometimes greenish-blue) before turning reddish brown (sometimes grayer).
KOH: No data.
FeSO4 (Iron Salts): Cap flesh turns olive-green.

Links:

National Audubon Society Field guide to Mushrooms, Gary Lincoff

0

Mushrooms of West Virginia and the Central Appalachians

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North American Boletes

158 (spadiceus)
159 (var. gracilis)
& rufobrunneus)

105

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