The following fungi seem to arise in Dec-Jan down here in the north Olympic Peninsula (WA) area... Armillaria mellea Bisporella citrina Caloscypha fulgens Cantharellus infundibuliformis Cheilymenia sp. Clavariadelphus ligula Clitocybe dealbata Clitocybe nuda Cordyceps ophioglossoides Helminthospaeria clavariarum (parasite of Clavulina cristata) Hygrocybe punicea Mucronella pendula Mucronella pulchra Panellus serotinus Plectania nannfeldtii
For island specific lists you could contact www.svims.ca. Today in Port Moody (greater Vancouver area) we found Calocera sp. Clavulina cristata Craterellus neotubaeformis (lots!) Dacrymyces palmatus Endogone sp. Fomitopsis pinicola Galerina sp. Ganoderma applanatum Ganoderma oregonense Heterotextus alpinus Hypoxylon sp. Hypocrea sp. Lactarius rufus group Lycoperdon sp. Mucronella sp. Nidula nivea-tomentosa Panellus serotinus Phaeolus schweinitzii Phycomyces sp. Plectania nannfeldtii Pleurotus longinquus (lots!) Polyporus sp. Psathyrella sp. Rhytisma punctatum Steareum complicatum Stropharia ambigua Tremella mesenterica Trametes hirsutum (spelling?) Trametes versicolor Tricaptum abietinum Ustilina deusta Plus lotsa lichens and some little brown mushrooms and other unidentifiables.
I'm not sure if I'd call this winter "fruiting", but here's what I think is a Ganoderma that appears very colorful in the winter. The image is barely a week old. From the coast down here, but definitely cool temps in the high 30s. It's one I posted in the General chat about the redwood forest. It's a fungi common on old hemlock stumps, or the like. I'd expect to see it from coastal north California all the way up to coastal Oregon, Washington and B.C., this time of year.
When we bushwhack or hike, I keep teaching my son to avoid damaging the small ones too, or other folks won't get to see them get big.