Mushrooms in Portage County, Wisconsin
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.
Too few past records in February here to list species.
Too few past records in March here to list species.
Usually recorded in April here:
Grey Puffball Bovista plumbea2 April records across all years
Usually recorded in May here:
Hardwood Trunk Rot Phellinus igniarius2 May records across all years
Oak Mazegill Daedalea quercina2 May records across all years
Usually recorded in June here:
- Hardwood Trunk Rot Phellinus igniarius3 June records across all years
Artist's Bracket Ganoderma applanatum2 June records across all years
Winter Polypore Lentinus brumalis2 June records across all years
Red Belted Conk Fomitopsis pinicola2 June records across all years
Usually recorded in July here:
- Hardwood Trunk Rot Phellinus igniarius4 July records across all years
- Meganotus everhartii3 July records across all years
- Red Belted Conk Fomitopsis pinicola3 July records across all years
- Oak Mazegill Daedalea quercina2 July records across all years
Turkeytail Trametes versicolor2 July records across all years
Smoky Bracket Bjerkandera adusta2 July records across all years
Usually recorded in August here:
- Red Belted Conk Fomitopsis pinicola11 August records across all years
Hoof Fungus Fomes fomentarius9 August records across all years
Brown Cubical Rot Of Birch Fomitopsis betulina5 August records across all years- Rhodofomes roseus5 August records across all years
- Hardwood Trunk Rot Phellinus igniarius4 August records across all years
Poplar Bracket Oxyporus populinus3 August records across all years
Phellinopsis conchata3 August records across all years- Artist's Bracket Ganoderma applanatum3 August records across all years
Shiny Cinnamon Polypore Coltricia cinnamomea2 August records across all years- Rhodofomes carneus2 August records across all years
Fluted Bird's Nest Cyathus striatus2 August records across all years
Ash Tree Bolete Boletinellus merulioides2 August records across all years
Usually recorded in September here:
- Smoky Bracket Bjerkandera adusta6 September records across all years
- Hardwood Trunk Rot Phellinus igniarius5 September records across all years
- Red Belted Conk Fomitopsis pinicola4 September records across all years
Elegant Polypore Cerioporus varius4 September records across all years
Laeticutis cristata3 September records across all years
Northern Cinnabar Polypore Trametes cinnabarina3 September records across all years- Winter Polypore Lentinus brumalis3 September records across all years
Jellied False Coral Sebacina schweinitzii3 September records across all years- Brown Cubical Rot Of Birch Fomitopsis betulina3 September records across all years
- Artist's Bracket Ganoderma applanatum2 September records across all years
Bitter Bracket Amaropostia stiptica2 September records across all years
Amethyst Deceiver Laccaria amethystina2 September records across all years
Usually recorded in October here:
- Hardwood Trunk Rot Phellinus igniarius7 October records across all years
- Winter Polypore Lentinus brumalis6 October records across all years
Blushing Bracket Daedaleopsis confragosa4 October records across all years- Smoky Bracket Bjerkandera adusta4 October records across all years
- Fungi Pallidohirschioporus biformis3 October records across all years
Conifer Mazegill Gloeophyllum sepiarium3 October records across all years
Milk-White Toothed Polypore Irpex lacteus3 October records across all years
Vararia investiens2 October records across all years- Hoof Fungus Fomes fomentarius2 October records across all years
Ceramic Parchment Xylobolus frustulatus2 October records across all years- Phellinopsis conchata2 October records across all years
Crimped Gill Plicaturopsis crispa2 October records across all years
Usually recorded in November here:
- Brown Cubical Rot Of Birch Fomitopsis betulina2 November records across all years
Too few past records in December here to list species.
Most-recorded species
| # | Species | Records |
|---|---|---|
| 1 | 60 | |
| 2 | 40 | |
| 3 | 29 | |
| 4 | 22 | |
| 5 | 14 | |
| 6 | 14 | |
| 7 | 12 | |
| 8 | 11 | |
| 9 | 10 | |
| 10 | 10 | |
| 11 | 8 | |
| 12 | 8 | |
| 13 | 8 | |
| 14 | 7 | |
| 15 | 7 |
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, Aug, 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 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.
- 1
- 2Nov 27, 2024Brown Cubical Rot Of Birch Fomitopsis betulinain Schmeeckle Reserve, WI · iNaturalist photo, research grade · original record
- 3
Oct 11, 2024Late Fall Polypore Ischnoderma resinosumin Hartman Creek State Park, WI · iNaturalist photo, research grade · original record - 4May 18, 2024Ceramic Parchment Xylobolus frustulatusnear Rosholt, WI · iNaturalist photo, research grade · original record
- 5Apr 22, 2022Northern Cinnabar Polypore Trametes cinnabarinain Schmeeckle Reserve, WI · iNaturalist photo, research grade · original record
- 6
Apr 22, 2022Aspen Bracket Phellinus tremulaein Schmeeckle Reserve, WI · iNaturalist photo, research grade · original record - 7
Apr 22, 2022Common Porecrust, Split Gill Fungus Schizophyllum communein Schmeeckle Reserve, WI · iNaturalist photo, research grade · original record - 8
Jun 25, 2021Pale Brittlestem Candolleomyces candolleanusnear Stevens Point, WI · iNaturalist photo, research grade · original record - 9
Jan 13, 2021Lumpy Bracket Trametes gibbosanear Junction City, WI · iNaturalist photo, research grade · original record - 10
Jan 13, 2021Spreading Phlebia Phlebia radiatanear Junction City, WI · iNaturalist photo, research grade · original record
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How we built this page
614 records of mushrooms, shelf fungi and polypores (class Agaricomycetes) that fall inside this county's Census boundary. Licenses: 597 CC0 and 17 CC BY 4.0. See about the data for the full citation.