Mushrooms in Mariposa County, California
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:
Large White Leucopax Leucopaxillus albissimus2 January records across all years- Cryptomarasmius minutus2 January records across all years
Usually recorded in February here:
Mock Oyster Mushroom Phyllotopsis nidulans2 February records since 2011
Too few past records in March here to list species.
Usually recorded in April here:
Cryptic Globe Fungus Cryptoporus volvatus3 April records since 2011
Usually recorded in May here:
- Cryptic Globe Fungus Cryptoporus volvatus10 May records across all years
Sculptured Puffball Calbovista subsculpta2 May records across all years
Mulch Maids Leratiomyces percevalii2 May records across all years
Usually recorded in June here:
- Lachnella bicolor3 June records across all years
Hygrophorus subalpinus3 June records across all years
Baker's Shanklet Collybia bakerensis3 June records across all years
Frothy Porecrust Irpex latemarginatus3 June records across all years
Sculpted Puffball Calvatia sculpta3 June records across all years- Cryptic Globe Fungus Cryptoporus volvatus3 June records across all years
- Pluteus orestes2 June records across all years
- Chromosera cyanophylla2 June records across all years
- Athelia bombacina2 June records across all years
Giant Lentinus Neolentinus ponderosus2 June records across all years
Usually recorded in July here:
Gautieria monticola6 July records across all years- Cryptic Globe Fungus Cryptoporus volvatus6 July records across all years
Incense Cedar Conk Tyromyces amarus2 July records across all years- Giant Lentinus Neolentinus ponderosus2 July records across all years
Usually recorded in August here:
- Schenella simplex4 August records across all years
Fly Agaric Amanita muscaria2 August records across all years- Birch Mazegill, Gilled Polypore Lenzites betulinus2 August records across all years
- Phlebia acerina2 August records across all years
Hairy Curtain Crust Stereum hirsutum2 August records across all years- Cryptic Globe Fungus Cryptoporus volvatus2 August records across all years
Brown Cubical Rot Laetiporus conifericola2 August records across all years- Giant Lentinus Neolentinus ponderosus2 August records across all years
Usually recorded in September here:
Turkeytail Trametes versicolor2 September records since 2011
Western Chicken-Of-The-Woods Laetiporus gilbertsonii2 September records since 2011- Brown Cubical Rot Laetiporus conifericola2 September records since 2011
Usually recorded in October here:
Blackedged Shield Pluteus atromarginatus4 October records since 2011
American Slippery Jack Suillus americanus3 October records since 2011- Incense Cedar Conk Tyromyces amarus2 October records since 2011
Usually recorded in November here:
Suillus brunnescens2 November records across all years- Mock Oyster Mushroom Phyllotopsis nidulans2 November records across all years
Usually recorded in December here:
- Suillus brunnescens3 December records across all years
Poor Man's Slippery Jack Suillus fuscotomentosus3 December records across all years- Leccinum arbuticola3 December records across all years
- Leccinum aeneum3 December records across all years
Galactic Milk Cap Lactarius xanthogalactus2 December records across all years
Western Painted Suillus Suillus lakei2 December records across all years- Calocybe ionides2 December records across all years
- Gloeodontia subasperispora2 December records across all years
Most-recorded species
| # | Species | Records |
|---|---|---|
| 1 | 27 | |
| 2 | 8 | |
| 3 | Schenella simplex | 6 |
| 4 | 6 | |
| 5 | 6 | |
| 6 | 5 | |
| 7 | 5 | |
| 8 | 5 | |
| 9 | 5 | |
| 10 | 5 | |
| 11 | 5 | |
| 12 | 4 | |
| 13 | Leccinum arbuticola | 4 |
| 14 | 4 | |
| 15 | 4 |
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, Jun, Oct.
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 6 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 23, 2026Cryptic Globe Fungus Cryptoporus volvatusnear Yosemite Valley, CA · iNaturalist photo, research grade · original record
- 2Nov 1, 2025Large White Leucopax Leucopaxillus albissimusnear Yosemite Valley, CA · iNaturalist photo, research grade · original record
- 3
Oct 31, 2025False Chanterelle Hygrophoropsis aurantiacanear Yosemite Valley, CA · iNaturalist photo, research grade · original record - 4
Oct 31, 2025Sulphur Tuft Hypholoma fascicularenear Yosemite Valley, CA · iNaturalist photo, research grade · original record - 5Oct 10, 2025Cortinarius leiocastaneusnear Yosemite Valley, CA · museum/herbarium specimen · original record
- 6Oct 10, 2025Sarcodon squamosusnear Yosemite Valley, CA · museum/herbarium specimen · original record
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How we built this page
2,962 records of mushrooms, shelf fungi and polypores (class Agaricomycetes) that fall inside this county's Census boundary. Licenses: 2,656 CC0 and 306 CC BY 4.0. See about the data for the full citation.