Checklist » Dryopteridaceae » Polystichum scopulinum
Last updated 3/13/2009 by David Giblin.
Polystichum scopulinum (D.C. Eaton) Maxon[FNA2, HC, HC2]
mountain holly fern, rock sword fern

Publication: Fern Bull. 8: 29. 1900.

Origin: Native

selected vouchers: WTU

Notes: FNA2: "Polystichum scopulinum is widely distributed in the United States west of the 110th meridian, where it occurs in sporadic, usually small populations. The species is abundant only on montane serpentine outcrops. The populations in Newfoundland and Quebec are dramatically disjunct.

Polystichum scopulinum is an allopolyploid, believed on morphologic grounds to be derived from P . imbricans × lemmonii (D. H. Wagner 1979). Based on putative hybridization between P . scopulinum and P . munitum (P. S. Soltis et al. 1989; W. H. Wagner Jr. 1973), however, P . munitum may also be involved. This hybrid is discussed under P . californicum ."

References: (none)

Synonyms & Misapplied Names:
Aspidium aculeatum (L.) Sw. var. scopulinum D.C. Eaton
Polystichum mohrioides (Bory) C. Presl var. scopulinum (D.C. Eaton) Fernald[Peck]