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Jepson Interchange (more information)
©Copyright 1993 by the Regents of the University of California
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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. mucronata (D.C. Eaton) D.C. Eaton


Rhizome short-creeping, branched, > 8 cm, 0.5–1 cm wide; scales brownish with darker mid-stripe
Leaves ± clustered, greenish to purplish; petiole < 2(3) mm wide; blade 2–3(4)-pinnate, narrowly triangular to oblong; segments 2–6(8) mm, 0.5–2(4) mm wide, linear to oblong, with a small point at tip
Sporangia 64-spored
Chromosomes: 2n=58
Ecology: Rocky or dry areas
Elevation: 20–3000 m.
Bioregional distribution: North Coast Ranges, Cascade Range, Sierra Nevada, Great Central Valley (Sutter Buttes), Central Western California, Southwestern California, East of Sierra Nevada, Desert Mountains
Distribution outside California: Baja California
Hybrids with P. bridgesii (P. X glaciogena W. Wagner, A.R. Sm. & T.R. Pray) are common, those with P. brachyptera , P. truncata less so.


var. mucronata

Leaf 20–40(60) cm, 5–15 cm wide; blade 2–3(4)-pinnate; 1° leaflets not overlapping, generally ± spreading to widely ascending; fertile segments not appearing folded in half, recurved margins not meeting, lower surface therefore visible
Ecology: Habitat of sp.
Elevation: 20–2400 m.
Bioregional distribution: North Coast Ranges, Cascade Range, Sierra Nevada, Great Central Valley (Sutter Buttes), Central Western California, Southwestern California, Desert Mountains
Distribution outside California: Baja California
Horticultural information: DRN, DRY: 2, 7, 9 , 14, 15, 16, 17, 18, 23, 24; DFCLT.

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bioregional map for PELLAEA%20mucronata%20var.%20mucronata 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 Pellaea mucronata var. mucronata
Retrieve dichotomous key for Pellaea
Overlay Consortium of California Herbaria specimen data by county on this map
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