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

  • Up-to-date information about California vascular plants is available from the Jepson eFlora.



Alan R. Smith and Thomas Lemieux

Perennial, in soil or on or among rocks; rhizome creeping to erect, scaly
Leaves generally all ± alike (or of 2 kinds, fertile and sterile), generally < 50 cm, often < 25 cm; petiole generally thin, wiry, often dark, in transverse section with vascular strands generally 1–3, less often many in a circle; blade generally pinnate or ± palmate-pinnate (see Adiantum ), often 2 or more compound, lower surface often with glands, ± powdery exudate, hairs, or scales; segments round, oblong, fan-shaped, or otherwise, veins generally free
Sporangia in sori or not, marginal, submarginal, or along veins, sometimes covered by recurved, often modified segment margins (false indusia); true indusia 0; spores spheric, sides sometimes flat, scar with 3 radiating branches
Genera in family: ± 40 genera, 500 species: worldwide, especially dry areas. Definition of Cheilanthes and related genera problematic; traditional limits often untenable.



Plant in soil or rock crevices; rhizome short- to long-creeping, scales overlapping, narrowly linear, light- to reddish or medium-brown, often with darker mid-stripe
Leaves erect, persistent, < 1 m; petioles ± cylindric, generally dark or reddish brown to blackish, ± shiny, glabrous; blade 1–4-pinnate; segments generally stalked, generally free, linear to rounded, lobed or not, often folded lengthwise when dried; veins generally free
Sporangia in ± continuous, submarginal bands, among a whitish to yellowish exudate or not; segment margin generally recurved, generally modified; spores tan to light yellow
Species in genus: ± 35 species: tropical, temp, few in Eur, 0 in Asia
Etymology: (Greek: dusky, from bluish gray leaves)
Reference: [Tryon 1957 Ann Missouri Bot Gard 44(2):125–193]
Not commonly cultivated.


P. bridgesii Hook.

Rhizome short-creeping, many-branched, > 15 cm, 0.5 cm wide; scales light to medium brown with darker mid-stripe
Leaves clustered, 12–25(35) cm, 1.5–2(3.5) cm wide, blue-green; petiole < 1.5 mm wide; blade 1-pinnate, oblong; 1° leaflets < 2 cm, < 1.5 cm wide, rounded, unlobed, often folded lengthwise
Sporangia in marginal bands; segment margin modified but not recurved; spores 64
Chromosomes: 2n=58
Ecology: Generally granite rock crevices, slopes
Elevation: 1200–3200 m.
Bioregional distribution: High Sierra Nevada
Distribution outside California: to Oregon, Idaho
Hybrids with P. mucronata (P. X glaciogena W. Wagner, A.R. Sm. & T.R. Pray) are sterile, ± common, c&s SNH, 1500–2400 m, intermediate between parents (see Wagner et al. 1983 Madroño 30:69–83)
Horticultural information: DFCLT.

previous taxon | next taxon
bioregional map for PELLAEA%20bridgesii being generated

Retrieve Jepson Interchange Index to Plant Names entry for Pellaea bridgesii
Retrieve dichotomous key for Pellaea
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

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