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Mushrooms in Siskiyou County, California
Updated October 2026 · from open GBIF records
2,109mushroom records
491species recorded
Maybusiest month
2,109 records since 1903 (973 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.
Too few past records in January here to list species.
Usually recorded in February here:
Northern Red Belt Fomitopsis mounceae2 February records since 2011
Too few past records in March here to list species.
Usually recorded in April here:
Jelly Ear Auricularia auricula-judae6 April records across all years
Barometer Earthstar Astraeus hygrometricus5 April records across all years
Spring King Boletus rex-veris4 April records across all years
Oak Crust Peniophora quercina3 April records across all years
Spreading Phlebia Phlebia radiata3 April records across all years
Hairy Curtain Crust Stereum hirsutum3 April records across all years
Sculpted Puffball Calvatia sculpta2 April records across all years
Winter Stalk Puffball Tulostoma brumale2 April records across all years
Weather Earthstar Geastrum corollinum2 April records across all years
Clitocybe albirhiza2 April records across all years
Sunshine Amanita Amanita aprica2 April records across all years
Usually recorded in May here:
Snowmelt Clitocybe Clitocybe glacialis29 May records since 2011
Pseudoomphalina angelesiana18 May records since 2011- Tyromyces leucospongius17 May records since 2011
- Spring King Boletus rex-veris17 May records since 2011
Cryptic Globe Fungus Cryptoporus volvatus13 May records since 2011
Snowmelt Mycena Mycena nivicola13 May records since 2011
Melanoleuca angelesiana11 May records since 2011- Cortinarius bridgei10 May records since 2011
Ramaria rasilispora9 May records since 2011- Pholiota olivaceophylla9 May records since 2011
Tricholoma moseri9 May records since 2011
Wintergreen Snowmelt Pholiota Pholiota nubigena9 May records since 2011
Usually recorded in June here:
- Pholiota lignicola11 June records since 2011
- Spring King Boletus rex-veris9 June records since 2011
- Sunshine Amanita Amanita aprica8 June records since 2011
Pholiota molesta7 June records since 2011- Cryptic Globe Fungus Cryptoporus volvatus7 June records since 2011
- Butyriboletus primiregius5 June records since 2011
- Phellinus cancriformans4 June records since 2011
- Snowmelt Clitocybe Clitocybe glacialis4 June records since 2011
- Northern Red Belt Fomitopsis mounceae4 June records since 2011
Orange Sponge Polypore Pycnoporellus alboluteus4 June records since 2011- Hygrophorus caeruleus3 June records since 2011
Baker's Shanklet Collybia bakerensis3 June records since 2011
Usually recorded in July here:
- Tyromyces leucospongius15 July records across all years
- Orange Sponge Polypore Pycnoporellus alboluteus13 July records across all years
- Wintergreen Snowmelt Pholiota Pholiota nubigena13 July records across all years
- Megalocystidium diffissum11 July records across all years
- Cylindrobasidium corrugum10 July records across all years
- Meruliopsis bella8 July records across all years
Sidera lenis8 July records across all years- Sculpted Puffball Calvatia sculpta7 July records across all years
Rooting Bolete Caloboletus radicans7 July records across all years
Orange Disco Aleurodiscus amorphus6 July records across all years
Annosus Root Disease Heterobasidion annosum4 July records across all years
Small-Warted Mountain Puffball Lycoperdon subcretaceum4 July records across all years
Usually recorded in August here:
- Rooting Bolete Caloboletus radicans9 August records across all years
Caloboletus frustosus7 August records across all years
Veluticeps fimbriata7 August records across all years
Mountain Butter Bolete Butyriboletus abieticola6 August records across all years- Scleroderma hypogaeum6 August records across all years
Elbowpatch Crust Fomitiporia punctata5 August records across all years- Galeropsis polytrichoides5 August records across all years
- Tyromyces leucospongius5 August records across all years
- Megalocystidium diffissum5 August records across all years
Russula alutacea5 August records across all years
Scaly Sawgill Neolentinus lepideus4 August records across all years- Cryptic Globe Fungus Cryptoporus volvatus4 August records across all years
Usually recorded in September here:
Western Matsutake Tricholoma murrillianum7 September records since 2011
Boletus subalpinus4 September records since 2011- Northern Red Belt Fomitopsis mounceae4 September records since 2011
Orange Chrysomphalina Chrysomphalina aurantiaca3 September records since 2011
White Chanterelle Cantharellus subalbidus2 September records since 2011
The Gypsy Cortinarius caperatus2 September records since 2011- Cryptic Globe Fungus Cryptoporus volvatus2 September records since 2011
Brown Stringy Trunk Rot Echinodontium tinctorium2 September records since 2011
Usually recorded in October here:
- White Chanterelle Cantharellus subalbidus12 October records since 2011
Mountain Satan's Bolete Rubroboletus haematinus5 October records since 2011- Boletus subalpinus5 October records since 2011
Western Painted Suillus Suillus lakei4 October records since 2011
Gastroboletus turbinatus3 October records since 2011
Thaxterogaster multiformis3 October records since 2011
Sulphur Tuft Hypholoma fasciculare3 October records since 2011
Thick-Veiled Cortinarius Cortinarius magnivelatus2 October records since 2011
Pig's Ear Gomphus clavatus2 October records since 2011- Mycetinis applanatipes2 October records since 2011
- Phlegmacium callimorphum2 October records since 2011
Cortinarius comptulus2 October records since 2011
Usually recorded in November here:
- White Chanterelle Cantharellus subalbidus12 November records since 2011
- Mountain Satan's Bolete Rubroboletus haematinus10 November records since 2011
- Thaxterogaster multiformis5 November records since 2011
Turbinellus kauffmanii4 November records since 2011- Albatrellopsis ellisii3 November records since 2011
Yellowleg Bonnet Mycena epipterygia3 November records since 2011- Boletus subalpinus2 November records since 2011
- Lactarius crassus2 November records since 2011
Mountain Polypore Bondarzewia mesenterica2 November records since 2011
Branched Shanklet Dendrocollybia racemosa2 November records since 2011
Usually recorded in December here:
- White Chanterelle Cantharellus subalbidus5 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 | 48 | |
| 2 | 39 | |
| 3 | 36 | |
| 4 | 34 | |
| 5 | 32 | |
| 6 | 30 | |
| 7 | 26 | |
| 8 | 23 | |
| 9 | 18 | |
| 10 | 18 | |
| 11 | 18 | |
| 12 | 18 | |
| 13 | 18 | |
| 14 | 17 | |
| 15 | 16 |
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: May, Oct, Jul.
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 9 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.
- 1
Oct 4, 2026Scaly Chanterelle Turbinellus floccosusin Shasta National Forest, CA · iNaturalist photo, research grade · original record - 2
Oct 4, 2026Soft Bracket Leptoporus mollisin Shasta National Forest, CA · iNaturalist photo, research grade · original record - 3Oct 4, 2026Western Painted Suillus Suillus lakeiin Shasta National Forest, CA · iNaturalist photo, research grade · original record
- 4Oct 4, 2026Orange Chrysomphalina Chrysomphalina aurantiacain Shasta National Forest, CA · iNaturalist photo, research grade · original record
- 5Oct 4, 2026Sulphur Tuft Hypholoma fascicularein Shasta National Forest, CA · iNaturalist photo, research grade · original record
- 6Oct 3, 2026Western Matsutake Tricholoma murrillianumnear Mount Shasta, CA (location blurred by the observer) · iNaturalist photo, research grade · original record
- 7Oct 3, 2026Boletus subalpinusin Shasta National Forest, CA · iNaturalist photo, research grade · original record
- 8Sep 25, 2026Boletus subalpinusin Shasta National Forest, CA · iNaturalist photo, research grade · original record
- 9Sep 25, 2026Western Matsutake Tricholoma murrillianumnear McCloud, 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
2,109 records of mushrooms, shelf fungi and polypores (class Agaricomycetes) that fall inside this county's Census boundary. Licenses: 1,185 CC0 and 924 CC BY 4.0. See about the data for the full citation.