Jepson Flora Project: Jepson Interchange    

 
link to manual TREATMENT FROM THE JEPSON MANUAL (1993) previous taxon | next taxon
Jepson Interchange (more information)
©Copyright 1993 by the Regents of the University of California

    THIS PAGE IS NO LONGER UPDATED
    AND IS MAINTAINED FOR ARCHIVAL PURPOSES ONLY
  • Up-to-date information about California vascular plants is available from the Jepson eFlora.

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. imbricans (D.C. Eaton) D.H. Wagner


Leaf: petiole generally 1/5–1/2 blade length, base scales ± 2–3 mm wide, lanceolate, those above lowest 1° leaflets generally < 1 mm wide, falling early; blade narrow-lanceolate to -elliptic, 1-pinnate
Chromosomes: 2n=82
Ecology: Shaded or exposed outcrops, banks, slopes, rocky areas
Elevation: 300–2500 m.
Bioregional distribution: Klamath Ranges, North Coast Ranges, High Cascade Range, n Sierra Nevada Foothills, High Sierra Nevada, San Francisco Bay Area, Outer South Coast Ranges, South Coast, Transverse Ranges, Peninsular Ranges, Modoc Plateau
Distribution outside California: to British Columbia
Hybridizes with P. dudleyi (called P. californicum ), P. lemmonii (called P. scopulinum ), P. munitum.

previous taxon | next taxon
bioregional map for POLYSTICHUM%20imbricans being generated
 


Retrieve Jepson Interchange Index to Plant Names entry for Polystichum imbricans
Retrieve dichotomous key for Polystichum
Overlay Consortium of California Herbaria specimen data by county on this map
Show other taxa with the same California distribution | Read about bioregions | Get lists of plants in a bioregion
Return to the Jepson Interchange main page
Return to treatment index page
Glossary


University & Jepson Herbaria Home Page |
General Information | University Herbarium | Jepson Herbarium |
Visiting the Herbaria | On-line Resources | Research |
Education | Related Sites
Copyright © by the Regents of the University of California