Gomphidius oregonensis

Species of fungus

Gomphidius oregonensis, commonly known as insidious gomphidius, is a mushroom found only in western North America, most commonly on the Pacific Coast. G. oregonensis can be distinguished by its spores which are the shortest in its genus, typically less than 14 μm long. Earlier in growth, G. oregonensis can be difficult to distinguish from other members of the genus Gomphidius, such as G. glutinosus, which is the most common and widespread species. With age, the fruiting body becomes murky and "insidious" in appearance, hence its common name.

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