Mushrooms in Johnson County, Illinois
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:
Turkeytail Trametes versicolor6 February records across all years- Alysidium aureofulvum2 February records across all years
Common Porecrust, Split Gill Fungus Schizophyllum commune2 February records across all years
Golden Bracket Fuscoporia gilva2 February records across all years
Usually recorded in March here:
- Fungi Pallidohirschioporus biformis3 March records across all years
Usually recorded in April here:
- Birch Mazegill, Gilled Polypore Lenzites betulinus3 April records across all years
Usually recorded in May here:
Spring Polypore Lentinus arcularius2 May records across all years
Usually recorded in June here:
European Platterful Mushroom Megacollybia platyphylla2 June records across all years
Bear Lentinus Lentinellus ursinus2 June records across all years
Collared Parachute Marasmius rotula2 June records across all years
Too few past records in July here to list species.
Too few past records in August here to list species.
Usually recorded in September here:
- Fungi Pallidohirschioporus biformis5 September records across all years
Ringless Honey Fungus Desarmillaria tabescens3 September records across all years
Blushing Rosette Abortiporus biennis3 September records across all years- Turkeytail Trametes versicolor3 September records across all years
Cinnamon Porecrust Fuscoporia ferrea2 September records across all years
Tiger Sawgill Lentinus tigrinus2 September records across all years
Vararia investiens2 September records across all years
Peniophorella pubera2 September records across all years
Dichostereum effuscatum2 September records across all years
Split Porecrust Schizopora paradoxa2 September records across all years- Golden Bracket Fuscoporia gilva2 September records across all years
Yellow Shield Pluteus chrysophaeus2 September records across all years
Usually recorded in October here:
- Turkeytail Trametes versicolor7 October records across all years
Crowded Parchment Stereum complicatum3 October records across all years- Birch Mazegill, Gilled Polypore Lenzites betulinus3 October records across all years
False Turkey-Tail Stereum ostrea3 October records across all years- Vitreoporus dichrous3 October records across all years
Blushing Bracket Daedaleopsis confragosa2 October records across all years- Haplotrichum croceum2 October records across all years
Stereum versicolor2 October records across all years
Usually recorded in November here:
- Poronidulus conchifer2 November records across all years
- Fungi Pallidohirschioporus biformis2 November records across all years
Artist's Bracket Ganoderma applanatum2 November records across all years
Too few past records in December here to list species.
Most-recorded species
| # | Species | Records |
|---|---|---|
| 1 | 18 | |
| 2 | 13 | |
| 3 | 8 | |
| 4 | 6 | |
| 5 | 5 | |
| 6 | 5 | |
| 7 | 5 | |
| 8 | 4 | |
| 9 | 4 | |
| 10 | 4 | |
| 11 | 4 | |
| 12 | 3 | |
| 13 | 3 | |
| 14 | 3 | |
| 15 | 3 |
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: Sep, Oct, Nov.
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.
- 1Feb 16, 2026Turkeytail Trametes versicolornear Vienna, IL · iNaturalist photo, research grade · original record
- 2Oct 4, 2025Turkeytail Trametes versicolorin Cache River State Natural Area, IL · iNaturalist photo, research grade · original record
- 3
Oct 3, 2025Ruby Bolete Hortiboletus rubellusin Cache River State Natural Area, IL · iNaturalist photo, research grade · original record - 4
Jul 25, 2025Protohydnum albumin Cache River State Natural Area, IL · iNaturalist photo, research grade · original record - 5
Jul 23, 2025Candy Apple Waxy Cap Hygrocybe cuspidatanear Simpson, IL · iNaturalist photo, research grade · original record - 6May 17, 2025Protohydnum albumnear Vienna, IL (location blurred by the observer) · iNaturalist photo, research grade · original record
- 7
May 17, 2025Flat Crep Crepidotus applanatusnear Vienna, IL (location blurred by the observer) · iNaturalist photo, research grade · original record - 8
May 17, 2025Crown-Tipped Coral Artomyces pyxidatusnear Vienna, IL (location blurred by the observer) · iNaturalist photo, research grade · original record - 9May 17, 2025Fungi Pallidohirschioporus biformisin Ferne Clyffe State Park, IL · iNaturalist photo, research grade · original record
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How we built this page
320 records of mushrooms, shelf fungi and polypores (class Agaricomycetes) that fall inside this county's Census boundary. Licenses: 295 CC0 and 25 CC BY 4.0. See about the data for the full citation.