Mushrooms in Keweenaw County, Michigan
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.
Usually recorded in March here:
Elbowpatch Crust Fomitiporia punctata2 March records since 2011
Too few past records in April here to list species.
Usually recorded in May here:
Northern Red Belt Fomitopsis mounceae22 May records since 2011
Hoof Fungus Fomes fomentarius17 May records since 2011
Brown Cubical Rot Of Birch Fomitopsis betulina5 May records since 2011
Hardwood Trunk Rot Phellinus igniarius3 May records since 2011
Aspen Bracket Phellinus tremulae3 May records since 2011
Red Tree Brain Fungus Peniophora rufa2 May records since 2011
Protohydnum album2 May records since 2011
Usually recorded in June here:
- Hoof Fungus Fomes fomentarius11 June records since 2011
- Northern Red Belt Fomitopsis mounceae10 June records since 2011
- Brown Cubical Rot Of Birch Fomitopsis betulina6 June records since 2011
Dryad's Saddle Cerioporus squamosus3 June records since 2011
Usually recorded in July here:
- Neoantrodia variiformis4 July records across all years
Crimped Gill Plicaturopsis crispa3 July records across all years
Grey Tooth Phellodon melaleucus3 July records across all years- Blue Wood-Clay Acanthophysellum lividocoeruleum3 July records across all years
- Scytinostroma odoratum3 July records across all years
Willow Glue Hydnoporia tabacina2 July records across all years
Veluticeps abietina2 July records across all years
Peniophora aurantiaca2 July records across all years- Serried Porecrust Neoantrodia serialis2 July records across all years
Sooty Crust Hymenochaete fuliginosa2 July records across all years- Red Tree Brain Fungus Peniophora rufa2 July records across all years
Usually recorded in August here:
Fly Agaric Amanita muscaria4 August records since 2011- Northern Red Belt Fomitopsis mounceae3 August records since 2011
American Slippery Jack Suillus americanus2 August records since 2011
Smoothish-Stemmed Bolete Hemileccinum subglabripes2 August records since 2011
Velvet Rollrim Tapinella atrotomentosa2 August records since 2011
Yellow Patches Amanita flavoconia2 August records since 2011
Salmon-Colored Entoloma Entoloma quadratum2 August records since 2011
Grayling Cantharellula umbonata2 August records since 2011
Usually recorded in September here:
- Fly Agaric Amanita muscaria18 September records since 2011
- Crimped Gill Plicaturopsis crispa3 September records since 2011
Crested Coral Clavulina coralloides2 September records since 2011
Brown Roll Rim Paxillus involutus2 September records since 2011
Aborted Entoloma, Shrimp Of The Woods Entoloma abortivum2 September records since 2011
Northern Tooth Climacodon septentrionalis2 September records since 2011
Earth-Fan Thelephora terrestris2 September records since 2011
Painted Suillus Suillus spraguei2 September records since 2011
Brown American Star-Footed Amanita Amanita brunnescens2 September records since 2011
Usually recorded in October here:
- Northern Red Belt Fomitopsis mounceae4 October records since 2011
Late Fall Oyster Mushroom Sarcomyxa serotina2 October records since 2011
Jelly Rot Phlebia tremellosa2 October records since 2011
Late Fall Polypore Ischnoderma resinosum2 October records since 2011- Grayling Cantharellula umbonata2 October records since 2011
- Aborted Entoloma, Shrimp Of The Woods Entoloma abortivum2 October records since 2011
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 | 40 | |
| 2 | 31 | |
| 3 | 24 | |
| 4 | 17 | |
| 5 | 9 | |
| 6 | 7 | |
| 7 | 6 | |
| 8 | 6 | |
| 9 | 5 | |
| 10 | 4 | |
| 11 | 4 | |
| 12 | 4 | |
| 13 | 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: Sep, Aug, May.
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 8 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.
- 1Sep 23, 2026Fly Agaric Amanita muscarianear Eagle River, MI (location blurred by the observer) · iNaturalist photo, research grade · original record
- 2Jul 3, 2026Northern Red Belt Fomitopsis mounceaein Keweenaw County, MI · iNaturalist photo, research grade · original record
- 3Jul 2, 2026Brown Cubical Rot Of Birch Fomitopsis betulinanear Ahmeek, MI · iNaturalist photo, research grade · original record
- 4Jun 24, 2026Northern Red Belt Fomitopsis mounceaenear Ahmeek, MI · iNaturalist photo, research grade · original record
- 5Jun 24, 2026Brown Cubical Rot Of Birch Fomitopsis betulinain Keweenaw County, MI · iNaturalist photo, research grade · original record
- 6Jun 14, 2026Brown Cubical Rot Of Birch Fomitopsis betulinain Keweenaw South Shore-BETE GRISE SOUTH, MI · iNaturalist photo, research grade · original record
- 7Jun 14, 2026Brown Cubical Rot Of Birch Fomitopsis betulinain Keweenaw South Shore-BETE GRISE SOUTH, MI · iNaturalist photo, research grade · original record
- 8Jun 13, 2026Brown Cubical Rot Of Birch Fomitopsis betulinanear Eagle Harbor, MI · iNaturalist photo, research grade · original record
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How we built this page
388 records of mushrooms, shelf fungi and polypores (class Agaricomycetes) that fall inside this county's Census boundary. Licenses: 127 CC0 and 261 CC BY 4.0. See about the data for the full citation.