Polystichum imbricans (D.C. Eaton) D.H. Wagner × Polystichum scopulinum (D.C. Eaton) Maxon
Annotated by D. Wagner, 1976. Remarks: Entire indusia and narrow, sparse scales on rachis. This should show 41 II's and 40 I's at meiosis.

Washington: Kittitas County: Between Paris Creek and Boulder Creek, upper Cle Elum River valley. On benches above river and road.
47.198258° N, 120.4389° W,
Datum: WGS 84. Uncertainty: 10000 meters. Coordinate Source: GeoLocate.
On wooded alluvial benches; mixed parent material, thouh predominantly ultramafic rock. Hybrid population. Also mounted with 5639 a-c. 5639d: P. scopulinum - P. munitum possible hybrid. Phenology: Spores.

A. R. Kruckeberg 5639d, Jul 12, 1963
WTU, Accession: 214838D