Jepson Flora Project: Jepson Interchange    

 
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Jepson Interchange (more information)
©Copyright 1993 by the Regents of the University of California
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DRYOPTERIDACEAE

WOOD FERN FAMILY

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.

POLYSTICHUM

SWORD FERN

Rhizome generally suberect to erect, often stout
Leaf: petiole stout, firm, generally densely scaly, in X -section with many round vascular strands in an arc; blade generally 1–3-pinnate, thin to leathery, scaly, veins generally free, rarely casually joined; 1° leaflet bases often wider on distal side; teeth generally including bristle-like tips that are < 2 mm
Sporangia: sori round; indusium generally peltate, sinus 0
Species in genus: ± 175+ species: ± worldwide
Etymology: (Greek: many rows, from rows of sori on type sp.)

Native

P. dudleyi Maxon


Leaf 50–100 cm; petiole ± 1/4–1/2 blade length, base scales 3–7(9) mm wide, ovate; blade lanceolate, generally 2- to rarely partly 3-pinnate; 1° leaflets ± 5–12 cm
Sporangia: indusium ciliate
Chromosomes: 2n=82
Ecology: Moist forests
Elevation: < 500 m.
Bioregional distribution: Outer North Coast Ranges, Central Coast, San Francisco Bay Area, Outer South Coast Ranges. Hybridizes with P. californicum, P. munitum.
Horticultural information: DRN: 4, 5 &IRR, SHD: 6, 14, 15, 16, 17 &WET: 7, 18, 19, 20, 21, 22, 23, 24.

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bioregional map for POLYSTICHUM%20dudleyi being generated
 
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Retrieve Jepson Interchange Index to Plant Names entry for Polystichum dudleyi
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