Mushrooms in Benton County, Oregon
Updated October 2026 · from open GBIF records
2,227mushroom records
612species recorded
Novbusiest month
2,227 records since 1904 (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:
Cat's Tongue Pseudohydnum gelatinosum3 January records across all years
Crystal Bell Galerina nana2 January records across all years
Snow-White Crust Plicatura nivea2 January records across all years
Hairy Curtain Crust Stereum hirsutum2 January records across all years
Common Porecrust, Split Gill Fungus Schizophyllum commune2 January records across all years
Rosy Conk Rhodofomes cajanderi2 January records across all years
Wood Blewit Lepista nuda2 January records across all years
Usually recorded in February here:
Willow Glue Hydnoporia tabacina4 February records across all years
Hairy Bracket Trametes hirsuta3 February records across all years
Gloeophyllum carbonarium3 February records across all years
Thelephora anthocephala3 February records across all years
Phellinus rimosus3 February records across all years
Orange Disco Aleurodiscus amorphus3 February records across all years- Hairy Curtain Crust Stereum hirsutum3 February records across all years
Ramaria rubricarnata3 February records across all years
Turkeytail Trametes versicolor3 February records across all years
Netted Crust Byssomerulius corium2 February records across all years
Ochre Bracket Trametes ochracea2 February records across all years
Pine Bracket Porodaedalea pini2 February records across all years
Usually recorded in March here:
Woolly Bird's Nest Fungus Nidula niveotomentosa3 March records since 2011
Lichenomphalia ericetorum3 March records since 2011
Jellied Bird's Nest Fungus Nidula candida3 March records since 2011
Oak Mazegill Daedalea quercina2 March records since 2011
Glistening Ink-Cap Coprinellus micaceus2 March records since 2011
Northern Red Belt Fomitopsis mounceae2 March records since 2011- Hairy Curtain Crust Stereum hirsutum2 March records since 2011
Usually recorded in April here:
Cryptic Globe Fungus Cryptoporus volvatus4 April records since 2011- Turkeytail Trametes versicolor4 April records since 2011
- Woolly Bird's Nest Fungus Nidula niveotomentosa3 April records since 2011
- Oak Mazegill Daedalea quercina2 April records since 2011
- Northern Red Belt Fomitopsis mounceae2 April records since 2011
Usually recorded in May here:
- Hysterangium crassirhachis6 May records across all years
- Ramaria armeniaca5 May records across all years
- Turkeytail Trametes versicolor5 May records across all years
Laxitextum bicolor3 May records across all years
Small Funnel-Veil Amanita Amanita multisquamosa2 May records across all years- Leucogaster magnatus2 May records across all years
- Acanthobasidium penicillatum2 May records across all years
- Russula gilkeyae2 May records across all years
Usually recorded in June here:
Lyomyces crustosus3 June records across all years- Turkeytail Trametes versicolor3 June records across all years
Elegant Polypore Cerioporus varius2 June records across all years
Oiled Crust Gloeocystidiellum porosum2 June records across all years
Hallowed Crust Resinicium bicolor2 June records across all years- Russula shafferi2 June records across all years
- Basidiodendron eyrei2 June records across all years
False Turkey-Tail Stereum ostrea2 June records across all years- Hysterangium setchellii2 June records across all years
- Hairy Curtain Crust Stereum hirsutum2 June records across all years
Usually recorded in July here:
Sistotrema brinkmannii13 July records across all years- Hyphodontia stipata8 July records across all years
- Tubulicrinis chaetophorus6 July records across all years
- Kneiffia subalutacea5 July records across all years
- Stereum variicolor5 July records across all years
- Hairy Curtain Crust Stereum hirsutum4 July records across all years
Botryobasidium vagum4 July records across all years- Zelleromyces gilkeyae3 July records across all years
- Lindtneria chordulata3 July records across all years
- Litschauerella hastata3 July records across all years
Botryobasidium pruinatum3 July records across all years- Laxitextum bicolor3 July records across all years
Usually recorded in August here:
- Peniophora puberula5 August records across all years
- Willow Glue Hydnoporia tabacina4 August records across all years
- Hairy Curtain Crust Stereum hirsutum3 August records across all years
Potato Earthball Scleroderma bovista3 August records across all years
Meadow Puffball Lycoperdon pratense2 August records across all years
Tubulicrinis glebulosus2 August records across all years
Grey Puffball Bovista plumbea2 August records across all years- Hymenochaete spreta2 August records across all years
Wine-Colored Pogie Rhizopogon vinicolor2 August records across all years
Usually recorded in September here:
- Northern Red Belt Fomitopsis mounceae3 September records since 2011
Deer Mushroom Pluteus cervinus2 September records since 2011
West Coast Reishi Ganoderma oregonense2 September records since 2011
Yellow Stainer Agaricus xanthodermus2 September records since 2011
Brown Cubical Rot Laetiporus conifericola2 September records since 2011
Usually recorded in October here:
Fly Agaric Amanita muscaria8 October records since 2011
Ballen's American Caesar Amanita calyptroderma6 October records since 2011
Lawyer's Wig Coprinus comatus6 October records since 2011- West Coast Reishi Ganoderma oregonense5 October records since 2011
- Cat's Tongue Pseudohydnum gelatinosum5 October records since 2011
- Yellow Stainer Agaricus xanthodermus5 October records since 2011
Questionable Stropharia Stropharia ambigua5 October records since 2011
Poplar Knight Tricholoma populinum4 October records since 2011
Fir-Cone Mushroom Strobilurus trullisatus4 October records since 2011
Western Amethyst Laccaria Laccaria amethysteo-occidentalis4 October records since 2011
Sulphur Tuft Hypholoma fasciculare4 October records since 2011- Galerina venenata3 October records since 2011
Usually recorded in November here:
- Cat's Tongue Pseudohydnum gelatinosum12 November records since 2011
- Yellow Stainer Agaricus xanthodermus12 November records since 2011
- Questionable Stropharia Stropharia ambigua12 November records since 2011
- Western Amethyst Laccaria Laccaria amethysteo-occidentalis9 November records since 2011
- Fly Agaric Amanita muscaria8 November records since 2011
- Sulphur Tuft Hypholoma fasciculare6 November records since 2011
Bleeding Milk Cap Lactarius rubrilacteus4 November records since 2011
Yellowfoot Dapperling Lepiota magnispora4 November records since 2011- Fir-Cone Mushroom Strobilurus trullisatus4 November records since 2011
Pleated Marasmius Marasmius plicatulus4 November records since 2011
Earpick Fungus Auriscalpium vulgare4 November records since 2011
Jelly Rot Phlebia tremellosa4 November records since 2011
Usually recorded in December here:
- Woolly Bird's Nest Fungus Nidula niveotomentosa4 December records since 2011
Common Bird's Nest Crucibulum laeve3 December records since 2011- Yellow Stainer Agaricus xanthodermus3 December records since 2011
- Jelly Rot Phlebia tremellosa3 December records since 2011
Yellowleg Bonnet Mycena epipterygia3 December records since 2011
Parasitic Clitocybe Clitocybe sclerotoidea2 December records since 2011- Earpick Fungus Auriscalpium vulgare2 December records since 2011
- Questionable Stropharia Stropharia ambigua2 December records since 2011
Deadly Galerina Galerina marginata2 December records since 2011- Pleated Marasmius Marasmius plicatulus2 December records since 2011
- Fly Agaric Amanita muscaria2 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 | 30 | |
| 3 | 30 | |
| 4 | 29 | |
| 5 | 28 | |
| 6 | 24 | |
| 7 | 23 | |
| 8 | 23 | |
| 9 | 23 | |
| 10 | 22 | |
| 11 | 18 | |
| 12 | 18 | |
| 13 | 16 | |
| 14 | 16 | |
| 15 | 15 |
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: Nov, Oct, 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.
- 1Sep 25, 2026Jelly Rot Phlebia tremellosain McDonald-Dunn Research Forest, OR · iNaturalist photo, research grade · original record
- 2Sep 14, 2026Yellow Stainer Agaricus xanthodermusnear Corvallis, OR · iNaturalist photo, research grade · original record
- 3May 11, 2026Turkeytail Trametes versicolorin William L. Finley National Wildlife Refuge, OR · iNaturalist photo, research grade · original record
- 4Apr 6, 2026Glistening Ink-Cap Coprinellus micaceusin Clemens County Park, OR · iNaturalist photo, research grade · original record
- 5Mar 30, 2026Woolly Bird's Nest Fungus Nidula niveotomentosanear Corvallis, OR · iNaturalist photo, research grade · original record
- 6Mar 8, 2026Lichenomphalia ericetorumin McDonald-Dunn Research Forest, OR · iNaturalist photo, research grade · original record
- 7Mar 8, 2026Jellied Bird's Nest Fungus Nidula candidain McDonald-Dunn Research Forest, OR · iNaturalist photo, research grade · original record
- 8Mar 8, 2026Common Porecrust, Split Gill Fungus Schizophyllum communenear Corvallis, OR · iNaturalist photo, research grade · original record
- 9Feb 2, 2026Turkeytail Trametes versicolornear Corvallis, OR · iNaturalist photo, research grade · original record
- 10Dec 21, 2025Jellied Bird's Nest Fungus Nidula candidanear Philomath, 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
2,227 records of mushrooms, shelf fungi and polypores (class Agaricomycetes) that fall inside this county's Census boundary. Licenses: 1,822 CC0 and 405 CC BY 4.0. See about the data for the full citation.