Burke: Polystichum imbricans vs. Polystichum californicum

	Polystichum imbricans	Polystichum californicum
	imbricate sword-fern, rock sword-fern	California sword fern

	Polystichum imbricans	Polystichum californicum
Habitat	Drier habitats such as open rock crevices and dry conifer forest, occasionally on serpentine, mostly at low elevations.	Moist forest understory at low elevations, typically in rock crevices.
Distribution	Occurring on both sides of the Cascades crest in Washington; southwestern British Columbia to California, eastern Idaho, and northern Idaho. [WildflowerSearch map] [BONAP county map]	Occurring west of the Cascades crest in Washington; southern British Columbia to California. [WildflowerSearch map] [BONAP county map]
Origin	Native	Native
Conservation status	Not of concern	Threatened in Washington (WANHP)
Sibling taxa	P. andersonii, P. braunii, P. californicum, P. californicum × P. munitum, P. kruckebergii, P. kruckebergii × P. munitum, P. lemmonii, P. lemmonii × P. munitum, P. lemmonii × P. scopulinum, P. lonchitis, P. munitum, P. munitum × P. scopulinum, P. scopulinum	P. andersonii, P. braunii, P. californicum × P. munitum, P. imbricans, P. kruckebergii, P. kruckebergii × P. munitum, P. lemmonii, P. lemmonii × P. munitum, P. lemmonii × P. scopulinum, P. lonchitis, P. munitum, P. munitum × P. scopulinum, P. scopulinum
Subordinate taxa	P. imbricans ssp. imbricans
Web links	Local floras: BC, CA, OR, WA Local Web sites: CalFlora, CalPhotos, Flora NW, PNW Herbaria WildflowerSearch iNaturalist (observations) USDA Plants Database LBJ Wildflower Center SEINet Plants of the World Online Encyclopedia of Life Wikipedia Google Image Search	Local floras: BC, CA, OR, WA Local Web sites: CalFlora, CalPhotos, Flora NW, PNW Herbaria WildflowerSearch iNaturalist (observations) USDA Plants Database LBJ Wildflower Center SEINet Plants of the World Online Encyclopedia of Life Wikipedia Google Image Search