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Species of fern From Wikipedia, the free encyclopedia
Polystichum scopulinum is a species of fern known by the common names mountain hollyfern[1] and rock sword fern.[2] It is native to much of western North America, and it is known from disjunct occurrences in eastern Canada as well.[2] It grows in rocky habitat, often in full sun. It is widespread but mostly found in small populations, and is noted to be most abundant on serpentine soils.[2] This fern produces several erect, narrowly lance-shaped leaves up to 50 centimeters in length. The leaves narrow near the bases. Each leaf is divided into many lance-shaped or oblong leaflets up to 3 centimeters long. The toothed leaflets are sometimes twisted on their axes and overlapping.
| Polystichum scopulinum | |
|---|---|
| |
Scientific classification  | |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Division: | Polypodiophyta |
| Class: | Polypodiopsida |
| Order: | Polypodiales |
| Suborder: | Polypodiineae |
| Family: | Dryopteridaceae |
| Genus: | Polystichum |
| Species: | P. scopulinum |
| Binomial name | |
| Polystichum scopulinum | |
P. scopulinum is probably a fertile allotetraploid with Polystichum munitum as one parent.[3][4]
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