Observation 26217: Boletus mirabilis Murrill

When: 2009-10-04

Collection location: Larch Mountain, Multnomah Co., Oregon, USA [Click for map]

Who: Daniel B. Wheeler (Tuberale)

No specimen available

Found growing on an old Western hemlock stump, well-rotted. Thought I have found B. mirabilis, but cap not fibrilose. Instead has curious pimple-like bumps on it, especially towards the edge of the cap. SIZE: 5-6 inches across, flesh thick. GILLS: white to cream or yellowish, somewhat mis-shapen. After bruising with fingernail, quickly changing to aquablue (greenish-blue), but within 20 seconds turning nearly blue-black.

Proposed Names

5% (4)
Used references: Arora’s Mushrooms Demystified. Keys out easily to this, although I thought I have found B. mirabilis.
27% (1)
Recognized by sight

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Eye3 = Observer’s choice
Eyes3 = Current consensus


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Created: 2009-10-04 17:15:34 PDT (-0700)
Last modified: 2012-10-03 13:47:33 PDT (-0700)
Viewed: 85 times, last viewed: 2017-06-06 01:33:40 PDT (-0700)
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