Tuber oregonense
| Tuber oregonense | |
|---|---|
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| Scientific classification | |
| Kingdom: | Fungi |
| Division: | Ascomycota |
| Class: | Pezizomycetes |
| Order: | Pezizales |
| Family: | Tuberaceae |
| Genus: | Tuber |
| Species: | T. oregonense |
| Binomial name | |
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Tuber oregonense Trappe, Bonito & Rawlinson (2010) |
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| Tuber oregonense | |
|---|---|
| Mycological characteristics | |
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glebal hymenium |
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hymenium attachment is not applicable |
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lacks a stipe |
 
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spore print is blackish-brown to brown |
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ecology is mycorrhizal |
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edibility: choice |
spore print is blackish-brown
Tuber oregonense, commonly known as the Oregon white truffle, is a species of edible truffle in the genus Tuber. Described as new to science in 2010, the North American species is found on the western coast of the United States, from northern California to southern British Columbia west of the Cascade Range. A mycorrhizal fungus, it grows in a symbiotic association with Douglas fir. It overlaps in distribution with the closely related T. gibbosum, but they have different growing seasons: T. oregonense typically appears from October through March, while T. gibbosum grows from January to June. The fruit bodies of the fungus are roughly spherical to irregular in shape, and resemble small potatoes up to 5 cm (2 in) in diameter. Inside the truffle is the gleba, which is initially white before it becomes a marbled tan color. The large, often thick-walled, and strongly ornamented spores are produced in large spherical asci. The truffle is highly prized for its taste and aroma. Some individuals have claimed success in cultivating the truffles in Christmas tree farms.
Tuber oregonense
The species was first officially described and named in a 2010 Mycologia article, although Tuber oregonense had been previously used provisionally (as Tuber oregonense Trappe & Bonito) in American field guides and other popular publications for several years. The type specimen was collected from Benton County, Oregon on 3 February, 2007 along U.S. Route 20 in Oregon.
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