Tuber gibbosum
Species of fungus
From Wikipedia, the free encyclopedia
Tuber gibbosum, commonly known as the Oregon white truffle,[1] is a species of truffle in the genus Tuber.[2] It is found in the Pacific Northwest region of the United States, where it often grows with Douglas-fir.
| Tuber gibbosum | |
|---|---|
| |
Scientific classification  | |
| Kingdom: | Fungi |
| Division: | Ascomycota |
| Class: | Pezizomycetes |
| Order: | Pezizales |
| Family: | Tuberaceae |
| Genus: | Tuber |
| Species: | T. gibbosum |
| Binomial name | |
| Tuber gibbosum Harkness (1899) | |
Taxonomy
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| Phylogeny of Tuber species in the Gibbosum clade, based on ribosomal DNA sequences.[2] |
The species was first described by American mycologist Harvey Wilson Harkness in 1899.[3] The specific epithet derives from the Latin word gibbosum meaning "humped", and refers to the irregular lobes and humps on larger specimens. T. gibbosum is part of the gibbosum clade of the genus Tuber. Species in this clade have unusual "peculiar wall thickenings on hyphal tips emerging from the peridial surface at maturity."[2]
Description
| Tuber gibbosum | |
|---|---|
| Mycological characteristics | |
 | Glebal hymenium |
 | Hymenium attachment is not applicable |
| Lacks a stipe |
 | Spore print is blackish-brown to brown |
 | Ecology is mycorrhizal |
 | Edibility is choice |
The species grows up to 5 centimetres (2 in) across.[1]
T. gibbosum resembles T. oregonense; both are found growing under Douglas-fir.
Fruit body
Distribution and habitat
It is found in the Pacific Northwest region of the United States, where it grows in association with Douglas-fir.[1]