Fungi of California
The fungi most often spotted in California, ranked by recent research-grade observations.
249,881
recent observations
50
species listed
50
fungi
Naturalists have logged 249,881 research-grade observations across the 50 most-recorded species in California. The most frequently seen is the Western Jack-o'-lantern, with 14,888 recorded sightings.
Most-observed fungi in California
Western Jack-o'-lantern
Omphalotus olivascens
14,888 observations · iNaturalist
Turkey-tail
Trametes versicolor
14,397 observations · iNaturalist
Fly Agaric
Amanita muscaria
13,350 observations · iNaturalist
Western Hardwood Sulphur Shelf
Laetiporus gilbertsonii
10,578 observations · iNaturalist
Hairy Curtain Crust
Stereum hirsutum
9,799 observations · iNaturalist
Splitgill Mushroom
Schizophyllum commune
9,056 observations · iNaturalist
Lace Lichen
Ramalina menziesii
8,946 observations · iNaturalist
Yellow Fieldcap
Bolbitius titubans
8,410 observations · iNaturalist
Red-cage Fungus
Clathrus ruber
7,017 observations · iNaturalist
Chip Cherries
Leratiomyces ceres
6,539 observations · iNaturalist
Golden Milkcap
Lactarius alnicola
6,339 observations · iNaturalist
Golden Ear
Naematelia aurantia
6,317 observations · iNaturalist
Mulch Maids
Leratiomyces percevalii
6,269 observations · iNaturalist
Blewit
Collybia nuda
6,150 observations · iNaturalist
Veiled Polypore
Cryptoporus volvatus
5,965 observations · iNaturalist
Deathcap
Amanita phalloides
5,827 observations · iNaturalist
Annulohypoxylon thouarsianum
Annulohypoxylon thouarsianum
5,596 observations · iNaturalist
Green-spored Parasol
Chlorophyllum molybdites
5,521 observations · iNaturalist
Sulphur Tuft
Hypholoma fasciculare
5,280 observations · iNaturalist
Springtime Amanita
Amanita velosa
5,122 observations · iNaturalist
Stubble Rosegill
Volvopluteus gloiocephalus
4,888 observations · iNaturalist
Gilled Polypore
Trametes betulina
4,695 observations · iNaturalist
Honey Mushroom
Armillaria mellea
4,523 observations · iNaturalist
Shaggy Mane
Coprinus comatus
4,405 observations · iNaturalist
Questionable Stropharia
Stropharia ambigua
3,908 observations · iNaturalist
Oak-loving Elfin Saddle
Helvella dryophila
3,678 observations · iNaturalist
Oakmoss
Evernia prunastri
3,391 observations · iNaturalist
Western Amethyst Laccaria
Laccaria amethysteo-occidentalis
3,311 observations · iNaturalist
Western Yellow-veiled Amanita
Amanita augusta
3,229 observations · iNaturalist
Phaeolus hispidoides
Phaeolus hispidoides
3,083 observations · iNaturalist
Red Pinwheel
Marasmius plicatulus
3,063 observations · iNaturalist
Coccora
Amanita calyptroderma
3,021 observations · iNaturalist
Western Jumbo Gym
Gymnopilus ventricosus
2,900 observations · iNaturalist
Hare's Foot Inkcap
Coprinopsis lagopus
2,655 observations · iNaturalist
King Bolete
Boletus edulis
2,648 observations · iNaturalist
Artist's Conk
Ganoderma brownii
2,645 observations · iNaturalist
Candlesnuff Fungus
Xylaria hypoxylon
2,619 observations · iNaturalist
Redwood Rooter
Caulorhiza umbonata
2,540 observations · iNaturalist
Parrot Mushroom
Gliophorus psittacinus
2,463 observations · iNaturalist
Yellow-staining Milk Cap
Lactarius xanthogalactus
2,401 observations · iNaturalist
Yellow Stainer
Agaricus xanthodermus
2,341 observations · iNaturalist
Northern Red Belt
Fomitopsis mounceae
2,320 observations · iNaturalist
Pungent Slippery Jack
Suillus pungens
2,308 observations · iNaturalist
Pale Brittlestem
Candolleomyces candolleanus
2,306 observations · iNaturalist
Liver Bolete
Suillellus amygdalinus
2,211 observations · iNaturalist
Toothed Jelly Fungus
Pseudohydnum gelatinosum
2,204 observations · iNaturalist
Cabbage Parachute
Gymnopus brassicolens
2,204 observations · iNaturalist
Scurfy Twiglet
Tubaria furfuracea
2,201 observations · iNaturalist
Emery Rocktripe Lichen
Umbilicaria phaea
2,183 observations · iNaturalist
Yellow Cobblestone Lichen
Acarospora socialis
2,171 observations · iNaturalist
Built from recent research-grade iNaturalist observations. Identifications are community-sourced and may occasionally be wrong, and the ranking reflects where people record and photograph wildlife, so a species seen often here is not necessarily rare elsewhere. Some plants and animals are only out in certain seasons. Treat this as a lively snapshot of what people are finding, not a formal checklist.
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