Oak Curtain Crust
Hymenochaete rubiginosa · Family Hymenochaetaceae · Updated October 2026
695US records
39states
Augbusiest month
695 US records since 1855 (132 in the last 10 years)
Last seen Sep 6, 2026 (about 7 weeks ago) in Linn Run State Park, PA, photographed by an iNaturalist user, with the ID agreed on by other iNaturalist users (research grade). Most US records come from New Jersey, Pennsylvania and New York, and the busiest months are Aug, Oct and Sep. (Data as of October 26, 2026; records can lag by weeks.)
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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: Aug, Oct, Sep.
Where it's recorded
Top counties
- Sussex County, NJ (37) · latest Sep 28, 2019
- Ocean County, NJ (30) · latest Oct 26, 2019
- Tompkins County, NY (24) · latest Nov 12, 2022
- Mercer County, NJ (23) · latest May 4, 2019
- Morris County, NJ (22) · latest Jul 20, 2019
- Hamilton County, OH (20) · latest Oct 13, 1938
- Burlington County, NJ (19) · latest Oct 6, 2018
- Hunterdon County, NJ (15) · latest Aug 25, 2019
- Watauga County, NC (15) · latest Aug 19, 1901
- Monmouth County, NJ (13) · latest Aug 22, 2015
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.