Home › California › Placer County
Mushrooms in Placer County, California
Updated October 2026 · from open GBIF records
6,487mushroom records
292species recorded
Augbusiest month
6,487 records since 1879 (6,259 in the last 10 years)
Fruiting now
Based on past sightings (mostly since 2011; all years where recent records are few), not a forecast. Weather and place matter a lot, and a listing here says nothing about whether a mushroom is safe.
Usually recorded in January here:
California Jack O' Lantern Omphalotus olivascens19 January records since 2011- Birch Mazegill, Gilled Polypore Lenzites betulinus6 January records since 2011
Hairy Curtain Crust Stereum hirsutum4 January records since 2011
Deep Purple Bolete Xerocomellus atropurpureus3 January records since 2011
Rufous Candy Cap Lactarius rufulus3 January records since 2011- Cryptomarasmius corbariensis3 January records since 2011
Western Amethyst Laccaria Laccaria amethysteo-occidentalis2 January records since 2011
Slimy-Girdled Cort Cortinarius glutinosoarmillatus2 January records since 2011
Poor Man's Slippery Jack Suillus fuscotomentosus2 January records since 2011
Ramaria rubricarnata2 January records since 2011- Tricholoma luteomaculosum2 January records since 2011
Big Sheath Mushroom Volvopluteus gloiocephalus2 January records since 2011
Usually recorded in February here:
Peniophora cinerea3 February records across all years- California Jack O' Lantern Omphalotus olivascens3 February records across all years
Steccherinum bourdotii2 February records across all years
Barometer Earthstar Astraeus hygrometricus2 February records across all years
Giraffe Spots Peniophora albobadia2 February records across all years
Usually recorded in March here:
- Hairy Curtain Crust Stereum hirsutum4 March records across all years
Turkeytail Trametes versicolor3 March records across all years
Spring Fieldcap Agrocybe praecox2 March records across all years
Mulch Maids Leratiomyces percevalii2 March records across all years
Woolly Oyster Hohenbuehelia mastrucata2 March records across all years
Usually recorded in April here:
Petticoat Mottlegill Panaeolus papilionaceus5 April records across all years
Bittersweet Orange Ringless Amanita Amanita velosa4 April records across all years
Brown Hay Cap Panaeolina foenisecii3 April records across all years
Cryptic Globe Fungus Cryptoporus volvatus3 April records across all years
Grey Puffball Bovista plumbea3 April records across all years
Sordid Blewit Lepista sordida2 April records across all years- Melanoleuca exscissa2 April records across all years
Tawny Grisette Amanita fulva2 April records across all years
Glistening Ink-Cap Coprinellus micaceus2 April records across all years
Frosty Funnel Clitocybe phyllophila2 April records across all years
Turf Mottlegill Panaeolus fimicola2 April records across all years- Hairy Curtain Crust Stereum hirsutum2 April records across all years
Usually recorded in May here:
Clitocybe albirhiza4 May records across all years
Sculptured Puffball Calbovista subsculpta3 May records across all years- Hairy Curtain Crust Stereum hirsutum3 May records across all years
- Cryptic Globe Fungus Cryptoporus volvatus3 May records across all years
Snowmelt Clitocybe Clitocybe glacialis2 May records across all years
Common Fieldcap Agrocybe pediades2 May records across all years
Ganoderma resinaceum2 May records across all years- Hebeloma testaceum2 May records across all years
Usually recorded in June here:
- Cryptic Globe Fungus Cryptoporus volvatus10 June records across all years
Fairies' Bonnets Coprinellus disseminatus3 June records across all years
Hairy Bracket Trametes hirsuta2 June records across all years
Sculpted Puffball Calvatia sculpta2 June records across all years
Giant Lentinus Neolentinus ponderosus2 June records across all years
Usually recorded in July here:
- Cryptic Globe Fungus Cryptoporus volvatus5 July records across all years
Steccherinum fimbriatum2 July records across all years
Usually recorded in August here:
- Cryptic Globe Fungus Cryptoporus volvatus4 August records since 2011
Deceiver Laccaria laccata2 August records since 2011
Inocybe nitidiuscula2 August records since 2011- Mallocybe fibrillosa2 August records since 2011
Usually recorded in September here:
- Entoloma undatum3 September records since 2011
Western Chicken-Of-The-Woods Laetiporus gilbertsonii3 September records since 2011- Tulosesus angulatus2 September records since 2011
- Entoloma foliocontusum2 September records since 2011
- Coprinopsis marcida2 September records since 2011
Kauffman's Forest Lepidella Amanita silvicola2 September records since 2011
Ash Cap Myxomphalia maura2 September records since 2011
Psathyrella pennata2 September records since 2011
Golden Pholiota Pholiota aurivella2 September records since 2011
Lawyer's Wig Coprinus comatus2 September records since 2011
Usually recorded in October here:
- Western Chicken-Of-The-Woods Laetiporus gilbertsonii3 October records since 2011
- Deep Purple Bolete Xerocomellus atropurpureus2 October records since 2011
Short-Stemmed Russula Russula brevipes2 October records since 2011
Alder Scalycap Flammula alnicola2 October records since 2011- Xeromphalina campanelloides2 October records since 2011
Smoky Dapperling Leucoagaricus barssii2 October records since 2011
False Parasol Chlorophyllum molybdites2 October records since 2011
Usually recorded in November here:
- California Jack O' Lantern Omphalotus olivascens4 November records since 2011
Purple Edge Bonnet Mycena purpureofusca3 November records since 2011- Big Sheath Mushroom Volvopluteus gloiocephalus3 November records since 2011
- Western Chicken-Of-The-Woods Laetiporus gilbertsonii3 November records since 2011
- Conocybe semiglobata2 November records since 2011
- Cryptic Globe Fungus Cryptoporus volvatus2 November records since 2011
- Turkeytail Trametes versicolor2 November records since 2011
Ballen's American Caesar Amanita calyptroderma2 November records since 2011
Usually recorded in December here:
- California Jack O' Lantern Omphalotus olivascens14 December records since 2011
Common Collybia Gymnopus dryophilus7 December records since 2011- Hairy Curtain Crust Stereum hirsutum7 December records since 2011
Yellow Fieldcap Bolbitius titubans7 December records since 2011- Cryptomarasmius corbariensis4 December records since 2011
Wood Blewit Lepista nuda4 December records since 2011- Big Sheath Mushroom Volvopluteus gloiocephalus4 December records since 2011
- Cortinarius huddartensis3 December records since 2011
- Turkeytail Trametes versicolor3 December records since 2011
Scurfy Twiglet Tubaria furfuracea3 December records since 2011- Birch Mazegill, Gilled Polypore Lenzites betulinus3 December records since 2011
Entoloma hirtipes2 December records since 2011
⚠ Never eat a wild mushroom based on this site. We show where fungi have been recorded, nothing more. We never say any mushroom is edible or safe, and you shouldn't decide that from any website, app or photo. Many deadly mushrooms look like harmless ones. If someone may have eaten a wild mushroom, call Poison Control at 1-800-222-1222 right away.
Most-recorded species
| # | Species | Records |
|---|---|---|
| 1 | 40 | |
| 2 | 33 | |
| 3 | 24 | |
| 4 | 14 | |
| 5 | 11 | |
| 6 | 10 | |
| 7 | Cryptomarasmius corbariensis | 9 |
| 8 | 9 | |
| 9 | 9 | |
| 10 | 8 | |
| 11 | 7 | |
| 12 | 7 | |
| 13 | 7 | |
| 14 | 6 | |
| 15 | 5 |
Being on this list doesn't mean a mushroom is common, easy to identify or safe. It only means it has been recorded here often.
Best months to look
Records by month, all years. Busiest: Aug, Dec, Jan.
Sightings map
● Each dot is a place with at least one record (rounded to about 1 km). Locations can be approximate, and many are on private land. Numbered blue circles are recent sightings, shown only to a general area of about 10 km.
Recent sightings
The 10 most recent dated records in this county, newest first. Data as of October 26, 2026. Records can take weeks or more to reach GBIF, so the newest finds may not show yet. Places are given only as a public park or forest (from the USGS Protected Areas Database) or the nearest town, and the numbered circles on the map cover a general area, not an exact spot.
- 1Jul 21, 2026Cryptic Globe Fungus Cryptoporus volvatusnear Tahoma, CA · iNaturalist photo, research grade · original record
- 2Jul 21, 2026Cryptic Globe Fungus Cryptoporus volvatusnear Tahoma, CA · iNaturalist photo, research grade · original record
- 3Jun 25, 2026Cryptic Globe Fungus Cryptoporus volvatusnear Cedar Flat, CA · iNaturalist photo, research grade · original record
- 4
Jun 22, 2026Schrenk's Red-Belt Conk Fomitopsis schrenkiinear Truckee, CA · iNaturalist photo, research grade · original record - 5
May 30, 2026Spring King Boletus rex-verisnear Truckee, CA · iNaturalist photo, research grade · original record - 6Dec 2, 2025Big Sheath Mushroom Volvopluteus gloiocephalusnear Lincoln, CA (location blurred by the observer) · iNaturalist photo, research grade · original record
- 7Nov 28, 2025California Jack O' Lantern Omphalotus olivascensin Hidden Falls Regional Park, CA · iNaturalist photo, research grade · original record
- 8
Nov 12, 2025Western Witch's Hat Hygrocybe singerinear Granite Bay, CA (location blurred by the observer) · iNaturalist photo, research grade · original record - 9Nov 9, 2025Purple Edge Bonnet Mycena purpureofuscanear Truckee, CA · iNaturalist photo, research grade · original record
- 10Oct 31, 2025False Parasol Chlorophyllum molybditesnear Roseville, CA (location blurred by the observer) · iNaturalist photo, research grade · original record
Many sightings are on private land. Always get the landowner's permission, and follow the rules of parks and forests, which often limit or ban collecting.
Bring along
🍄
Regional mushroom field guideSee on Amazon🍄
Folding mushroom knife with brushSee on Amazon🍄
Wicker foraging basketSee on Amazon🍄
10x hand lens / loupeSee on Amazon🍄
Spore print paperSee on AmazonAs an Amazon Associate we earn from qualifying purchases.
How we built this page
6,487 records of mushrooms, shelf fungi and polypores (class Agaricomycetes) that fall inside this county's Census boundary. Licenses: 5,543 CC0 and 944 CC BY 4.0. See about the data for the full citation.