Species: Polystichum kruckebergii
Encyclopedia of Puget Sound
This fern has evergreen fronds that are 9-35 cm long and clustered on a short, ascending rhizome. Each frond consists of a scale-covered petiole, or stipe, that is 2-11 cm long and a narrowly lance-shaped blade, or lamina, that is 7-23 cm long and deeply lobed into 20-40 leaflets, or pinnae. Each pinna has a toothed and spiny margin, and the lower ones are lobed at the base. Spores are borne in small clusters, or sori, that are partially covered by a membranous disk, or indusium, that is located on the undersides of the upper pinnae.
Source: Encyclopedia of Life
Classification
Filicopsida
Filicales
Dryopteridaceae
Polystichum
NatureServe
Classification
Ecology and Life History
This fern has evergreen fronds that are 9-35 cm long and clustered on a short, ascending rhizome. Each frond consists of a scale-covered petiole, or stipe, that is 2-11 cm long and a narrowly lance-shaped blade, or lamina, that is 7-23 cm long and deeply lobed into 20-40 leaflets, or pinnae. Each pinna has a toothed and spiny margin, and the lower ones are lobed at the base. Spores are borne in small clusters, or sori, that are partially covered by a membranous disk, or indusium, that is located on the undersides of the upper pinnae.
Source: Encyclopedia of Life