The OOTW for this week is by Misha Zitser in Cunningham Park, NY, US, on December 14, 2021 . His iNaturalist ID is zitserm and the Observation can be seen here:
Without further study it is apparently difficult to discern the difference between S. complicated and S. hirsutum - they're not easy to separate.
https://www.inaturalist.org/observations/103048780
More about Stereum complicatum:
https://www.mushroomexpert.com/stereum_complicatum.html
https://www.messiah.edu/Oakes/fungi_on_wood/crust%20and%20parchment/species%20pages/Stereum%20complicatum.htm
https://en.wikipedia.org/wiki/Stereum
https://wpamushroomclub.org/product/stereum-complicatum/
https://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?id=5645
https://explorer.natureserve.org/Taxon/ELEMENT_GLOBAL.2.1063180/Stereum_complicatum
https://driftlessprairies.org/bio-inventory/fungi-inventory/stereum-complicatum-crowded-parchment/
https://www.gbif.org/species/2553087
https://www.mycobank.org/page/Name%20details%20page/name/Stereum%20complicatum
https://florafinder.org/Species/Stereum_complicatum.php
Don't forget to follow him at:
iNaturalist: zitserm
Instagram: oumuamua123