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Sword Fern

Polystichum munitum

Description:

The dark green fronds of this fern grow to 50-180 cm (i.e. nearly 6 feet) tall, in a tight clump spreading out radially from a round base. They are single-pinnate, with the pinnate alternating on the stalk. Each pinnate is 1-15 cm long, with a small upward-pointing lobe at the base, and the edges are serrated with bristly tips. Individual fronds live for 1.5-2.5 years and remain attached to the rhizome after withering. The round sori occupy two rows on either side of the midrib of each pinna and are covered by a centrally-attached, umbrella-like indusium with fringed edges. They produce light yellow spores.

Habitat:

Abundant in shaded and forested areas.

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ElsiOuzts
Spotted by
ElsiOuzts

Washington, USA

Spotted on Jan 21, 2013
Submitted on Jan 21, 2013

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