Mushrooms in Multnomah County, Oregon
Updated October 2026 · from open GBIF records
965mushroom records
270species recorded
Octbusiest month
965 records since 1913 (587 in the last 10 years)
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:
Common Porecrust, Split Gill Fungus Schizophyllum commune9 January records since 2011
Scurfy Twiglet Tubaria furfuracea5 January records since 2011
Late Fall Oyster Mushroom Sarcomyxa serotina4 January records since 2011
Turkeytail Trametes versicolor4 January records since 2011
Northern Red Belt Fomitopsis mounceae4 January records since 2011
Rosy Conk Rhodofomes cajanderi3 January records since 2011
Wrinkled Club Clavulina rugosa2 January records since 2011
Woolly Bird's Nest Fungus Nidula niveotomentosa2 January records since 2011
Wood Blewit Lepista nuda2 January records since 2011
Usually recorded in February here:
- Turkeytail Trametes versicolor7 February records since 2011
Hairy Curtain Crust Stereum hirsutum4 February records since 2011- Common Porecrust, Split Gill Fungus Schizophyllum commune4 February records since 2011
Fluted Bird's Nest Cyathus striatus3 February records since 2011
Oak Mazegill Daedalea quercina2 February records since 2011- Wrinkled Club Clavulina rugosa2 February records since 2011
Lumpy Bracket Trametes gibbosa2 February records since 2011
Usually recorded in March here:
Lichenomphalia ericetorum7 March records since 2011- Common Porecrust, Split Gill Fungus Schizophyllum commune5 March records since 2011
- Fluted Bird's Nest Cyathus striatus3 March records since 2011
- Northern Red Belt Fomitopsis mounceae3 March records since 2011
- Turkeytail Trametes versicolor3 March records since 2011
Usually recorded in April here:
- Common Porecrust, Split Gill Fungus Schizophyllum commune9 April records since 2011
- Lichenomphalia ericetorum8 April records since 2011
Glistening Ink-Cap Coprinellus micaceus4 April records since 2011- Northern Red Belt Fomitopsis mounceae2 April records since 2011
Lawyer's Wig Coprinus comatus2 April records since 2011- Turkeytail Trametes versicolor2 April records since 2011
Artist's Bracket Ganoderma applanatum2 April records since 2011
Usually recorded in May here:
Oyster Mushroom Pleurotus ostreatus4 May records since 2011- Northern Red Belt Fomitopsis mounceae3 May records since 2011
Cryptic Globe Fungus Cryptoporus volvatus2 May records since 2011- Turkeytail Trametes versicolor2 May records since 2011
- Common Porecrust, Split Gill Fungus Schizophyllum commune2 May records since 2011
Usually recorded in June here:
Ceramic Parchment Xylobolus frustulatus2 June records across all years
Yellow Fieldcap Bolbitius titubans2 June records across all years- Northern Red Belt Fomitopsis mounceae2 June records across all years
Usually recorded in July here:
- Hymenochaete curtisii3 July records across all years
- Northern Red Belt Fomitopsis mounceae2 July records across all years
Velvet Rollrim Tapinella atrotomentosa2 July records across all years
Usually recorded in August here:
Entoloma cuspidiferum2 August records since 2011- Artist's Bracket Ganoderma applanatum2 August records since 2011
Plantpot Dapperling Leucocoprinus birnbaumii2 August records since 2011
Flocculose Inkcap Coprinellus flocculosus2 August records since 2011- Northern Red Belt Fomitopsis mounceae2 August records since 2011
Usually recorded in September here:
Meruliporia incrassata5 September records across all years
Wood Woolly-Foot Collybiopsis peronata2 September records across all years
Marasmiellus candidus2 September records across all years- Northern Red Belt Fomitopsis mounceae2 September records across all years
Fir-Cone Mushroom Strobilurus trullisatus2 September records across all years- Artist's Bracket Ganoderma applanatum2 September records across all years
Usually recorded in October here:
- Hortiboletus coccyginus7 October records since 2011
Poplar Knight Tricholoma populinum7 October records since 2011- Fir-Cone Mushroom Strobilurus trullisatus7 October records since 2011
- Fluted Bird's Nest Cyathus striatus6 October records since 2011
Jelly Rot Phlebia tremellosa6 October records since 2011- Lawyer's Wig Coprinus comatus5 October records since 2011
- Wood Woolly-Foot Collybiopsis peronata5 October records since 2011
Hare'Sfoot Inkcap Coprinopsis lagopus5 October records since 2011
Chip Cherries Leratiomyces ceres4 October records since 2011
Bleeding Fairy Helmet Mycena haematopus4 October records since 2011
Fly Agaric Amanita muscaria4 October records since 2011- Lumpy Bracket Trametes gibbosa4 October records since 2011
Usually recorded in November here:
- Fly Agaric Amanita muscaria12 November records since 2011
- Turkeytail Trametes versicolor6 November records since 2011
Yellow Stainer Agaricus xanthodermus6 November records since 2011
Questionable Stropharia Stropharia ambigua6 November records since 2011
West Coast Reishi Ganoderma oregonense4 November records since 2011- Northern Red Belt Fomitopsis mounceae4 November records since 2011
- Chip Cherries Leratiomyces ceres4 November records since 2011
- Glistening Ink-Cap Coprinellus micaceus4 November records since 2011
- Common Porecrust, Split Gill Fungus Schizophyllum commune3 November records since 2011
- Fir-Cone Mushroom Strobilurus trullisatus3 November records since 2011
Western Amethyst Laccaria Laccaria amethysteo-occidentalis3 November records since 2011- Jelly Rot Phlebia tremellosa3 November records since 2011
Usually recorded in December here:
- Late Fall Oyster Mushroom Sarcomyxa serotina10 December records since 2011
- Common Porecrust, Split Gill Fungus Schizophyllum commune8 December records since 2011
- Turkeytail Trametes versicolor6 December records since 2011
Spreading Phlebia Phlebia radiata4 December records since 2011- Jelly Rot Phlebia tremellosa3 December records since 2011
- Woolly Bird's Nest Fungus Nidula niveotomentosa3 December records since 2011
Purple Edge Bonnet Mycena purpureofusca2 December records since 2011
Sulphur Tuft Hypholoma fasciculare2 December records since 2011- Lumpy Bracket Trametes gibbosa2 December records since 2011
- Lichenomphalia ericetorum2 December records since 2011
- Fly Agaric Amanita muscaria2 December records since 2011
Crested Coral Clavulina coralloides2 December records since 2011
⚠ Never eat a wild mushroom based on this site. We show where fungi have been recorded, nothing more. We never say any mushroom is edible or safe, and you shouldn't decide that from any website, app or photo. Many deadly mushrooms look like harmless ones. If someone may have eaten a wild mushroom, call Poison Control at 1-800-222-1222 right away.
Most-recorded species
| # | Species | Records |
|---|---|---|
| 1 | 53 | |
| 2 | 45 | |
| 3 | 41 | |
| 4 | 31 | |
| 5 | 27 | |
| 6 | 19 | |
| 7 | 17 | |
| 8 | 17 | |
| 9 | 16 | |
| 10 | Phaeocollybia luteosquamulosa | 16 |
| 11 | 16 | |
| 12 | 15 | |
| 13 | 14 | |
| 14 | 12 | |
| 15 | 12 |
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: Oct, Nov, Dec.
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.
- 1Oct 5, 2026Fluted Bird's Nest Cyathus striatusnear Portland, OR · iNaturalist photo, research grade · original record
- 2Oct 5, 2026Hare'Sfoot Inkcap Coprinopsis lagopusnear Portland, OR · iNaturalist photo, research grade · original record
- 3Sep 15, 2026Fir-Cone Mushroom Strobilurus trullisatusnear Portland, OR · iNaturalist photo, research grade · original record
- 4
Aug 29, 2026Brown Cubical Rot Laetiporus conifericolain Mt. Hood National Forest, OR · iNaturalist photo, research grade · original record - 5Jun 28, 2026Common Porecrust, Split Gill Fungus Schizophyllum communenear Portland, OR · iNaturalist photo, research grade · original record
- 6Jun 1, 2026Northern Red Belt Fomitopsis mounceaenear Portland, OR · iNaturalist photo, research grade · original record
- 7Jun 1, 2026Northern Red Belt Fomitopsis mounceaenear Portland, OR · iNaturalist photo, research grade · original record
- 8
May 23, 2026Pale Oyster Pleurotus pulmonariusin Tryon Creek State Natural Area, OR · iNaturalist photo, research grade · original record - 9Apr 9, 2026Turkeytail Trametes versicolornear Portland, OR · iNaturalist photo, research grade · original record
- 10Mar 30, 2026Common Porecrust, Split Gill Fungus Schizophyllum communein Elk Rock Island, OR · iNaturalist photo, research grade · original record
Many sightings are on private land. Always get the landowner's permission, and follow the rules of parks and forests, which often limit or ban collecting.
Bring along
🍄
Regional mushroom field guideSee on Amazon🍄
Folding mushroom knife with brushSee on Amazon🍄
Wicker foraging basketSee on Amazon🍄
10x hand lens / loupeSee on Amazon🍄
Spore print paperSee on AmazonAs an Amazon Associate we earn from qualifying purchases.
How we built this page
965 records of mushrooms, shelf fungi and polypores (class Agaricomycetes) that fall inside this county's Census boundary. Licenses: 523 CC0 and 442 CC BY 4.0. See about the data for the full citation.