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
For up-to-date information about California vascular plants, visit the Jepson eFlora.

PTERIDACEAE

BRAKE FAMILY

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.

PELLAEA

CLIFF-BRAKE

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.

Native

P. truncata Goodd.

CLIFF-BRAKE

Rhizome short-creeping, branched, to 8+ cm, 2–3 mm wide; scales brownish with darker mid-stripe
Leaves clustered, 15–30(36) cm, 4–11 cm wide, olive-green; petiole 1(2) mm wide, ± flat or upper surface grooved; blade 2-pinnate, narrowly triangular to oblong-triangular; 1° leaflets generally not overlapping, ± spreading; segments 5–8 mm, 1–4 mm wide, linear to oblong, with a small point at tip, margins wavy-crenate, often (especially sterile) whitish, fertile not appearing folded in half, recurved margins not meeting, lower surface therefore visible
Sporangia 64-spored
Chromosomes: 2n=58
Ecology: Generally in crevices of or at bases of granite (in CA) or igneous rock
Elevation: 1200–1900 m.
Bioregional distribution: e Desert Mountains (Providence, New York mtns)
Distribution outside California: to Colorado, Texas, Baja California
Synonyms: P. longimucronata Hook. misapplied
See the CNPS Inventory for information about endangerment and rarity.
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bioregional map for PELLAEA%20truncata being generated
 
N.B. The distribution depicted here differs from that given in The Jepson Manual (1993)
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 truncata
Retrieve dichotomous key for Pellaea
Overlay Consortium of California Herbaria specimen data by county on this map
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