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Mushrooms in Fresno County, California
Updated October 2026 · from open GBIF records
1,024mushroom records
345species recorded
Octbusiest month
1,024 records since 1901 (694 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:
Big Sheath Mushroom Volvopluteus gloiocephalus3 January records since 2011
Gerronema atrialbum2 January records since 2011- Crepidotus ehrendorferi2 January records since 2011
- Stropharia caerulea2 January records since 2011
- Calonarius intricatus2 January records since 2011
- Tricholoma subannulatum2 January records since 2011
Usually recorded in February here:
Western Amethyst Laccaria Laccaria amethysteo-occidentalis3 February records since 2011- Birch Mazegill, Gilled Polypore Lenzites betulinus2 February records since 2011
Too few past records in March here to list species.
Usually recorded in April here:
Daisy Earthstar Geastrum floriforme2 April records since 2011
Ash Cap Myxomphalia maura2 April records since 2011
Usually recorded in May here:
Wintergreen Snowmelt Pholiota Pholiota nubigena2 May records across all years
Sculptured Puffball Calbovista subsculpta2 May records across all years
Cryptic Globe Fungus Cryptoporus volvatus2 May records across all years
Usually recorded in June here:
Brownlegged Bell Galerina badipes5 June records since 2011
Saffron Webcap Cortinarius croceus3 June records since 2011
Sculpted Puffball Calvatia sculpta3 June records since 2011
Mulch Maids Leratiomyces percevalii2 June records since 2011- Phlegmacium subolivascens2 June records since 2011
Little Cone Bell Entoloma holoconiotum2 June records since 2011- Entoloma occidentale2 June records since 2011
Sulphur Tuft Hypholoma fasciculare2 June records since 2011
Cannon Fungus Sphaerobolus stellatus2 June records since 2011
Usually recorded in July here:
Giant Lentinus Neolentinus ponderosus16 July records since 2011- Brownlegged Bell Galerina badipes3 July records since 2011
- Clitocybe variispora3 July records since 2011
- Inocybe occulta2 July records since 2011
Earth-Fan Thelephora terrestris2 July records since 2011
Cep Boletus edulis2 July records since 2011- Inocybe phaeocystidiosa2 July records since 2011
- Saffron Webcap Cortinarius croceus2 July records since 2011
Blue-Staining Slippery Jack Suillus tomentosus2 July records since 2011- Galerina diabolissima2 July records since 2011
Fly Agaric Amanita muscaria2 July records since 2011
Torn Fibrecap Inocybe lacera2 July records since 2011
Usually recorded in August here:
- Giant Lentinus Neolentinus ponderosus3 August records since 2011
Rhizopogon evadens2 August records since 2011- Saffron Webcap Cortinarius croceus2 August records since 2011
Hardwood Trunk Rot Phellinus igniarius2 August records since 2011
Sickener Russula emetica2 August records since 2011
Common Fieldcap Agrocybe pediades2 August records since 2011- Endoptychum depressum2 August records since 2011
- Cortinarius ultimiionophyllus2 August records since 2011
Short-Stalked Suillus Suillus brevipes2 August records since 2011- Mulch Maids Leratiomyces percevalii2 August records since 2011
- Blue-Staining Slippery Jack Suillus tomentosus2 August records since 2011
Orange Moss Navel Rickenella fibula2 August records since 2011
Usually recorded in September here:
Osteina obducta4 September records since 2011
Coppery Waxcap Hygrophorus siccipes3 September records since 2011
The Gypsy Cortinarius caperatus2 September records since 2011
Willow Deceiver Laccaria pumila2 September records since 2011- Thaxterogaster herpeticus2 September records since 2011
Almond Mushroom Agaricus subrufescens2 September records since 2011- Phlegmacium balteatialutaceum2 September records since 2011
Deep Purple Bolete Xerocomellus atropurpureus2 September records since 2011- Sarcodon squamosus2 September records since 2011
Cystoderma fallax2 September records since 2011- Cortinarius fructuodorus2 September records since 2011
Northern Red Belt Fomitopsis mounceae2 September records since 2011
Usually recorded in October here:
Slender Pholiota Pholiota spumosa6 October records since 2011
Fir-Cone Mushroom Strobilurus trullisatus5 October records since 2011- Cortinarius desertorum4 October records since 2011
- Entoloma exalbidum3 October records since 2011
American Slippery Jack Suillus americanus3 October records since 2011- Xeromphalina campanelloides3 October records since 2011
- Hygrocybe substrangulata3 October records since 2011
- Calonarius sannio3 October records since 2011
- Galerina clavata2 October records since 2011
- Cortinarius fructuodorus2 October records since 2011
- Mythicomyces corneipes2 October records since 2011
- Armillaria nabsnona2 October records since 2011
Usually recorded in November here:
California Agaricus Agaricus californicus2 November records across all years
Lawyer's Wig Coprinus comatus2 November records across all years
Usually recorded in December here:
Pholiota foedata2 December records since 2011- Phlebia acerina2 December records since 2011
- Lepiota erminea2 December records since 2011
Mauve Bonnet Mycena meliigena2 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 | 24 | |
| 2 | 21 | |
| 3 | 12 | |
| 4 | 11 | |
| 5 | 11 | |
| 6 | 10 | |
| 7 | 10 | |
| 8 | 9 | |
| 9 | 8 | |
| 10 | 8 | |
| 11 | 7 | |
| 12 | 7 | |
| 13 | 6 | |
| 14 | 6 | |
| 15 | 6 |
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: Oct, Sep, Jun.
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.
- 1Aug 11, 2026Giant Lentinus Neolentinus ponderosusin Fresno County, CA · iNaturalist photo, research grade · original record
- 2Jul 11, 2026Cryptic Globe Fungus Cryptoporus volvatusin Kings Canyon National Park, CA · iNaturalist photo, research grade · original record
- 3Feb 5, 2026Birch Mazegill, Gilled Polypore Lenzites betulinusin Millerton Lake, CA · iNaturalist photo, research grade · original record
- 4Feb 4, 2026Birch Mazegill, Gilled Polypore Lenzites betulinusin Millerton Lake, CA · iNaturalist photo, research grade · original record
- 5Jan 25, 2026Big Sheath Mushroom Volvopluteus gloiocephalusin Fresno County, CA · iNaturalist photo, research grade · original record
- 6Jan 11, 2026Big Sheath Mushroom Volvopluteus gloiocephalusin Fresno County, CA · iNaturalist photo, research grade · original record
- 7
Dec 1, 2025Yellow-Gilled Gymnopilus Gymnopilus luteofoliusnear Shaver Lake, CA · iNaturalist photo, research grade · original record - 8
Nov 29, 2025Red Edge Brittlestem Psathyrella corrugisnear Old Fig Garden, CA · iNaturalist photo, research grade · original record - 9
Nov 29, 2025Hare'Sfoot Inkcap Coprinopsis lagopusnear Old Fig Garden, CA · iNaturalist photo, research grade · original record - 10Nov 18, 2025Lawyer's Wig Coprinus comatusin Fresno County, CA · 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
1,024 records of mushrooms, shelf fungi and polypores (class Agaricomycetes) that fall inside this county's Census boundary. Licenses: 339 CC0 and 685 CC BY 4.0. See about the data for the full citation.