Flora of Scotts Creek Watershed
Athyrium filix-femina ssp. cyclosorum - Ladyfern
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Family Name: Dryopteridaceae
Common Names: Ladyfern, Western Lady Fern, Subartic Ladyfern, Common Lady Fern
Origin: Native to California
Habitat: Found in moist to wet places: stream banks, woods, meadows, shaded places. Below 3200 m elevation.
Life Form and Duration: Perennial Fern, 0.2-2 m
Comments on overall growth: Tall, delicate and graceful looking fern. Grows from a stout rootstalk - creeping to semi-erect, short branched, slightly scaly. Frond stalk bases remain attached to rootstalk past their season. Fronds are clustered, arching from the base.
Foliage Type: Deciduous
Foliage Description: Stipes (frond stalks) straw-colored with blackened base, stout and fleshy - easily crushed, x-section flattened towards base, covered in many dried brown/blackish 1 cm long scales. Laminae (overall frond blade) pointed - elliptical in shape with tapering at base and tip, 30-200 cm long, up to 25 cm wide, 2-3 pinnate, 20-35 pairs of pinnae (primary divisions). Pinnae lance-oblong overall shape, pointed towards tips, deeply pinnately lobed - toothed, size reduced towards tip and base of frond, towards tip lobes become joined together.
Indusia and Sori Description: Sori are roundish to horseshoe shaped, about 1 mm long. Indusium is straight, curved, or kidney shaped, deciduous, free edge is toothed or fringed.
Spore Production: June-August