Polystichum imbricans

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Narrowleaf swordfern
Systematics
Department : Vascular plants (tracheophyta)
Class : True ferns (Polypodiopsida)
Order : Spotted ferns (Polypodiales)
Family : Fern family (Dryopteridaceae)
Genre : Shield ferns ( Polystichum )
Type : Narrowleaf swordfern
Scientific name
Polystichum imbricans
( DCEaton ) DH Wagner

Polystichum imbricans ( English narrowleaf swordfern, imbricate sword fern ) is a fern species from the worm fern family.

Distribution and ecology

It is native to western North America from British Columbia to southern California , where it occurs in rocky habitats on the coast as well as inland in mountainous regions and their foothills.

description

The species has several upright straight or lanceolate fronds up to 80 centimeters long. Each frond has numerous overlapping, sometimes twisted lobes 2 to 4 centimeters long. The lobes have serrated edges.

Systematics

Numerous hybrids occur in this species, some of which are fertile and are considered to be separate species, such as Polystichum californicum , the hybrid with P. dudleyi .

Individual evidence

  1. ↑ Polystichum imbricans . United States Department of Agriculture, Natural Resources Conservation Service. Retrieved October 12, 2015.

Web links