Mushrooms in Lassen 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:
Bondarzewia occidentalis2 January records since 2011
Too few past records in February here to list species.
Too few past records in March here to list species.
Too few past records in April here to list species.
Too few past records in May here to list species.
Usually recorded in June here:
Suillus pseudobrevipes5 June records across all years
Sculpted Puffball Calvatia sculpta2 June records across all years
Usually recorded in July here:
- Suillus pseudobrevipes4 July records across all years
Rickenella mellea2 July records across all years
Usually recorded in August here:
Brown Patch Disease Rhizoctonia solani2 August records since 2011
Usually recorded in September here:
Giant Hygroscopic Earthstar Astraeus pteridis2 September records across all years
Usually recorded in October here:
Short-Stalked Suillus Suillus brevipes3 October records across all years
Too few past records in November here to list species.
Too few past records in December here to list species.
Most-recorded species
| # | Species | Records |
|---|---|---|
| 1 | 10 | |
| 2 | 4 | |
| 3 | 4 | |
| 4 | Lactarius smithii | 2 |
| 5 | 2 | |
| 6 | 2 | |
| 7 | 2 | |
| 8 | 2 | |
| 9 | Laetisaria culmigena | 2 |
| 10 | 2 | |
| 11 | 2 | |
| 12 | 2 | |
| 13 | 2 | |
| 14 | 1 | |
| 15 | 1 |
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, 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 5 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
Jul 28, 2026Cryptic Globe Fungus Cryptoporus volvatusin Lassen National Forest, CA · iNaturalist photo, research grade · original record - 2Jun 3, 2025Sculpted Puffball Calvatia sculptanear Little Valley, CA · iNaturalist photo, research grade · original record
- 3Jun 2, 2025Cryptic Globe Fungus Cryptoporus volvatusin Lassen County, CA (location blurred by the observer) · iNaturalist photo, research grade · original record
- 4Jul 20, 2024Lactarius atrobadiusin Lassen County, CA · museum/herbarium specimen · original record
- 5
Jul 20, 2024Deadly Galerina Galerina marginatain or near Lassen National Forest, CA · museum/herbarium specimen (California State University, East Bay) · original record
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How we built this page
3,403 records of mushrooms, shelf fungi and polypores (class Agaricomycetes) that fall inside this county's Census boundary. Licenses: 3,221 CC0 and 182 CC BY 4.0. See about the data for the full citation.