Polystichum californicum (D.C. Eaton) Diels × Polystichum munitum (Kaulf.) Presl ?
Annotated by E. Alverson.

Washington: Pierce County: Eatonville Rim, 2 mile northeast of Eatonville. Elev. 1200 ft.
46.887969° N, 122.235335° W,
Datum: WGS 84. Uncertainty: 1000 meters. Coordinate Source: GeoLocate.
Dry, rocky woods. Some spores seem to be viable. Both parents nearby. Resembles P. munitum except for the two lowest pairs of pinnae, which are bi-pinnatifid, as in P. californicum. Phenology: Spores.

Ed Alverson 239, Nov 11, 1979
WTU, Accession: 277101, Barcode: WTU-V-030985