Rubroboletus rhodosanguineus (“Perfumed Bolete”)

Yellow cap flesh tastes sweet, smells of over-ripe fruit when fresh & perfume when dry, & blues quickly before resolving to dull grayish-blue.

SKU: Boletus rhodosanguineus Categories: , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , ,

Description

Name in North American Boletes: Boletus rhodosanguineus

Genus: Rubroboletus

  • Genus 2: Boletus

Species: rhodosanguineus

Common Name: Perfumed Bolete

Tells: Yellow cap flesh tastes sweet, smells of over-ripe fruit when fresh & perfume when dry, & blues quickly before resolving to dull grayish-blue.

Other Information: Viscid red cap gets brown tones & fissures in age, & stains dark red-purple before fading to gray. Blue bruising red pores, often w/a yellowish margin. Young specimens can have yellow pores & older ones can fade to orange. Yellow to pale pink stem has red netting, becomes purple-red at the base, often has brownish spots, & stains blue (becoming green in the reddish areas). Yellow stem flesh, w/burgundy-red & golden zones by the base, quickly blues. May grow in merged clusters. Likes oak, particularly red oak.

Science Notes: DNA testing moved this mushroom into the newly erected genus “Rubroboletus.” NOTE: This is the “Bad News Boletes” genus that includes many of the worst sick-makers. Red flags should go off when you see it.

Edibility: The books say “Unknown” but I wouldn’t touch a Rubroboletus. It is marked as “avoid” on this site due to its actively dangerous relatives.

CHEMICAL TESTS:

  • NH4OH (Ammonia): Pink areas on the cap skin flash bluish-slate, while brown areas flash a rusty color or stain dark brown. Cap flesh stains orange or bleaches from blue to dingy yellowish-cream.
  • KOH: Pink areas on the cap flash bluish-slate, while brown areas stain dark brown. Cap flesh stains bright orange, resolving to dull yellowish-orange.
  • FeSO4 (Iron Salts): No data.

Links:

National Audubon Society Field guide to Mushrooms, Gary Lincoff  0 Mushrooms of West Virginia and the Central Appalachians  0 North American Boletes 148 304

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