Xanthoconium affine variations (“Spotted Bolete”)

Brown (red-, yellow-, or dark) cap may have yellow spots. White pores age yellow-tan & stain darker. White/tan “shaved leg” stem.

SKU: Xanthoconium affine Categories: , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , ,

Description

Genus: Xanthoconium

  • Genus 2: Boletus

Species: affine (var. affine, var. maculosus, & var. reticulatum)

  • Species 2: affinis

Common Name: “Spotted Bolete” (for affine var. maculosus)

Tells: Brown (red-, yellow-, or dark) cap may have yellow spots. White pores age yellow-tan & stain darker. White/tan “shaved leg” stem.

Other Information: White cap flesh DNS or stains yellow, esp. around larval tunnels. Cap can get pitted or cracked, esp. w/age. There are three recognized variations in this complex. Affine var. affine has no netting except a tiny bit at the very top; affine var. maculosus, called the “Spotted Bolete” because it has white/yellow spots on the cap; & affine var. reticulatum, which has conspicuous brown netting on the stem. Yellow-brown spore print. Funny Note: Mrs. B.F. (Hi dear!) came up with the catchphrase, “those Xanthoconium girls like to shave their legs!” The funny thing is that it works. Once you get the image in your head, you’ll remember and recognize these stems every time.

Edibility: Choice when they aren’t buggy – which they usually are, alas.

CHEMICAL TESTS:

  • NH4OH (Ammonia): Cap skin turns rusty tan (var. affine), or orange to cinnabar (var. maculosus). No data for var. reticulatum.
  • KOH: No data, except that var. reticulatum has no reaction on the flesh.
  • FeSO4 (Iron Salts): Cap flesh slowly turns olive-gray for var. affine; no data for the other two.

Links:

National Audubon Society Field guide to Mushrooms, Gary Lincoff 565 Mushrooms of West Virginia and the Central Appalachians 342 North American Boletes 275 BENA 409

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