Jepson Flora Project: Jepson Interchange    

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Jepson Interchange (more information)
©Copyright 1993 by the Regents of the University of California
For up-to-date information about California vascular plants, visit the Jepson eFlora.



Alan R. Smith and Thomas Lemieux

Perennial, in soil or rock crevices; rhizome generally short-creeping, suberect, or erect, scales large, generally tan to brown, generally 1-colored
Leaves generally tufted, 5–200+ cm, generally ± alike; petiole generally firm, base generally darker, with 2–many vascular strands; blade 1–4-pinnate, often with scales, hair-like scales, hairs (except clear, needle-like hairs generally 0), or short-stalked glands on axes, sometimes between veins, veins free to netted; 1° and 2° axes generally grooved on upper side
Sporangia: sori round, less often oblong or J-shaped, along or at tips of veins; indusia peltate, round-reniform, oblong to linear, J-shaped, hood-like, or cup-like, rarely 0; spores elliptic, winged, ridged, or spiny, scar linear
Genera in family: ± 60 genera, > 1000 species: worldwide, especially tropical, wooded areas. Woodsia sometimes in Woodsiaceae; Athyrium, Cystopteris sometimes in Athyriaceae.



Rhizome short-creeping or ascending to suberect, stout
Leaf: petiole > 1.5 mm wide, firm, more densely scaly than midrib, base in X -section with many round vascular strands in an arc; blade 1–3-pinnate or more, veins free, simple or forked; segments deeply pinnately lobed or not
Sporangia: sori round; indusium round-reniform, ± centrally attached at a sinus, generally persistent
Species in genus: ± 100 species: ± worldwide, especially eastern Asia
Etymology: (Greek: oak, fern)
Hybrids unknown in CA, frequent in eastern North America
Reference: [Montgomery & Paulton 1981 Fiddlehead Forum 8:25–31]


D. filix-mas (L.) Schott


Leaf ± 40–70(100+) cm, 15–25(30+) cm wide; petiole, midrib nonglandular; blade elliptic, 2-pinnate, segments deeply pinnately lobed or not, teeth ± without bristle-like tips, veins generally ending short of margin; longest 1° leaflets near middle, rarely near base; scales of 1° leaflet midribs ± linear or hair-like
Chromosomes: 2n=164
Ecology: Granitic cliffs
Elevation: 2400–3100 m.
Bioregional distribution: San Bernardino Mountains, White and Inyo Mountains
Distribution outside California: to British Columbia, ne N.America, Europe, Africa
Horticultural information: In cultivation.
See the CNPS Inventory for information about endangerment and rarity.
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bioregional map for DRYOPTERIS%20filix-mas being generated
YOU CAN HELP US make sure that our distributional information is correct and current. If you know that a plant occurs in a wild, reproducing state in a Jepson bioregion NOT highlighted on the map, please contact us with that information. Please realize that we cannot incorporate range extensions without access to a voucher specimen, which should (ultimately) be deposited in an herbarium. You can send the pressed, dried collection (with complete locality information indicated) to us (e-mail us for details) or refer us to an accessioned herbarium specimen. Non-occurrence of a plant in an indicated area is difficult to document, but we will especially value your input on those types of possible errors (see automatic conversion of distribution data to maps).

Retrieve Jepson Interchange Index to Plant Names entry for Dryopteris filix-mas
Retrieve dichotomous key for Dryopteris
Overlay Consortium of California Herbaria specimen data by county on this map
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