Small Moss Oysterling
Arrhenia retiruga · Family Hygrophoraceae · Updated October 2026
54US records
10states
Novbusiest month
54 US records since 1911 (26 in the last 10 years)
Last seen Jan 4, 2026 (about 10 months ago) near Seattle, King County, WA, photographed by an iNaturalist user, with the ID agreed on by other iNaturalist users (research grade). Most US records come from California, Washington and North Carolina, and the busiest months are Nov, Jan and Dec. (Data as of October 26, 2026; records can lag by weeks.)
⚠ 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.
Lookalike warning. Many mushrooms, including deadly ones, closely resemble each other, and the only reliable identification comes from an expert looking at the actual specimen (often with spore prints or microscopy). Never use a name, photo or record count on this page to decide what something is.
When it's recorded
Records by month, all years. Busiest: Nov, Jan, Dec.
Where it's recorded
Top counties
- Orange County, NC (5) · latest Sep 25, 1924
- San Juan County, WA (4) · latest Nov 24, 1972
- Knox County, TN (3) · latest Oct 6, 2021
- Pierce County, WA (3) · latest Nov 30, 2020
- Thurston County, WA (3) · latest Mar 8, 2025
- King County, WA (3) · latest Jan 4, 2026
- Otsego County, NY (3) · latest Feb 22, 2024
- Contra Costa County, CA (3) · latest Jan 21, 2017
- Blount County, TN (2) · latest Oct 20, 1934
- Santa Clara County, CA (2) · latest Jan 27, 2018
More on this species from GBIF.
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.