Observation 27049: Tuber oregonense Trappe, Bonito & P. Rawl.
When: 2009-10-18
No herbarium specimen

Notes: Too young to have mature spores … yet. Nonetheless the size of the sporocarps, association with Douglas-fir and venae externae all strongly suggest Tuber oregonense: what is now called Oregon White truffle. The common name still stumps me: It was first collected by Dr. H. H. Harkness near San Francisco, CA in 1878. When mature, the gleba is a light to dark brown in color. Only immature material has a mostly white peridium. Apparently more commonly found in Oregon, Washington and British Columbia than in California, where it has rarely been collected since the 1800’s.

Proposed Names

78% (2)
Eye3 Eyes3
Recognized by sight: This is only an educated guess, based on the time of year and about 800 pounds worth of collected material.

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Eye3 = Observer’s choice
Eyes3 = Current consensus


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Created: 2009-10-22 22:07:08 CDT (-0400)
Last modified: 2012-06-14 09:36:34 CDT (-0400)
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