collected by Matt Shapiro under Douglas Fir.
this is the Oregon Black Truffle, that some find to be a delicious edible species.

Species Lists


400x, Melzers; note round ascus at bottom.
note warty exterior.
1000x; these are big spores.

Proposed Names

94% (3)
Recognized by sight: black, warty, carboniferous exterior; gleba whitish with gray capsules.
Based on microscopic features: globose asci, large, lemon-shaped spores, 71-77 × 26-32 microns.
Based on chemical features: strong, pungent odor disgusting to my nose, with fruity overtones.

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= Observer’s choice
= Current consensus


Add Comment
Confirm Leucangium carthusianum.
By: Daniel B. Wheeler (Tuberale)
2012-03-28 18:38:14 PDT (-0700)

Has been collected several times from CA, Debbie. Outer warted peridium is unique in the hypogeous world in my experience, in that the sporocarp will “heal” being munched on by critters. Odd to find a hole in a piece of charcoal that has warts on the inside of the hole. Unless you know what caused the hole.

Have grown it several times. But tried growing it at Bishop’s Jones Creek Tree Farm without success. To my knowledge it has never fruited there.

There are important soil considerations when growing L. carthusianum. When mature and fresh, it is my favorite truffle. Elements of dried morels, butter, pineapple and pear can be smelled. If over-mature, can get rank though. Sporocarp needs to be firm to be edible.

Nice microscopy!
By: Martin Livezey (MLivezey)
2012-03-28 04:24:11 PDT (-0700)
By: Darvin DeShazer (darv)
2012-03-27 20:19:14 PDT (-0700)

I think it’s the best tasting of the western truffles.

Oregon ‘Black Truffles’ are being innoculated…
By: Britney Ramsey (Riverdweller)
2012-03-27 17:57:27 PDT (-0700)

…into the roots of Douglas fir in order to grow truffles where ever they are planted.

I think we can expect to see truffles spreading out to anywhere the climate favors.

That’s cool
By: Tom Bruns (pogon)
2012-03-27 17:11:08 PDT (-0700)

I don’t think I have ever seen that before.

Oregon Black Truffle…first California collection???
By: Debbie Viess (amanitarita)
2012-03-26 17:54:54 PDT (-0700)

Apparently not…Matt just wrote me that Arora in MDM claimed that Herb Saylor had also found it at Pt. Reyes, but that was waaaaay before my time.