Saccharina latissima (L.) C.E.Lane, C.Mayes, Druehl & G.W.Saunders
Annotated by C.N. Janousek, 22 Feb 2013. Remarks: [most likely]

Oregon: Coos County: Cape Arago
43.306499° N, 124.402341° W,
Datum: WGS 84. Uncertainty: 602 meters. Coordinate Source: GeoLocate.
"Collections from Cape Arago (MD... 2213) made in June are certainly the same as certain of Setchell's collections in the University of California herbarium (his 5078 and 3286 from Uyak and Unalaska respectively) and labeled by him as 'Hedophyllum subsessile young!'"¶¶see: Doty, M.S. The marine algae of Oregon I. Farlowia 3(1): 42. January 1947

M.S. Doty 2213, Jun 29, 1939
OSC, Accession: 2545, Barcode: OSC-A-003181