Metzgeria furcata (L.) Corda
Annotated by W.S. Hong.

Alaska: Washington Bay, Kuiu island.
56.72111° N, 134.36583° W,
On dripping rocks cliff in spruce forest. Mixed with some Bazzania ambigua. Https://bryophyteportal.org/portal/collections/individual/index.php?occid=6614836.

Walter J. Eyerdam s.n., 1949-8-1
WS, Catalog: 254018