Distribution: Also occurs in Europe.
Substrate: conifer litter under Douglas-fir and other conifers
Conservation Status: Not of concern
Mycena oregonensis is a tiny species, with caps only reaching 1 cm (<0.5 in.) in diameter, that is noticeable primarily because of its color. All parts are brilliant yellow and this allows them to stand out in the conifer litter under Douglas-fir and other conifers.