Leucangium carthusianum
Source Wikimedia Commons

Scientific Name

Leucangium carthusianum

Common Names

Oregon black truffle


Year round but mostly November – April


Typically 28 – 60 g dark brown, almost black, sometimes very roughened peridium. This truffle has a thin, fragile skin, sometimes with very small diamond shaped points or warts and care must be taken not to damage the truffle in handling. In cross section the gleba (“flesh”) is marbled with dark chambers surrounded by pale, whitish veins. A ripe Oregon black truffle should have a marbled bubble like interior with mostly dark patches in shades of grey with white webbing.

Care should be taken with shipping as shelf life tends to be shorter than for other truffle species.


Milder than the Oregon white truffle (Tuber oregonense) they have a pronounced, fragrant aroma reminiscent of sweet pineapple, floral notes, chocolate, or cheese.


Found only in the wild of the the Pacific Northwest region of North America (northern California into British Columbia). Dog harvested truffles tend to be of better quality as the dog tend to identify mature truffles. Raking is incriminatory and often results in unreliable crop quality.

See grading guidelines

Other species