Overview

Distribution

National Distribution

United States

Origin: Unknown/Undetermined

Regularity: Regularly occurring

Currently: Unknown/Undetermined

Confidence: Confident

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Calif., Colo., Idaho, Mont., Nev., Oreg., Utah, Wash., Wyo.
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Physical Description

Morphology

Description

Stems compact, ascending, stout, 5--10 mm diam.; scales uniformly reddish brown, linear-subulate, 0.1--0.3 mm wide, thin, margins sinuous, nearly entire. Leaves monomorphic, clustered on stem, 2.5--20 cm; croziers sparsely villous. Petiole brown, lustrous, rounded adaxially, with prominent articulation lines near base. Blade linear-oblong, pinnate-pinnatifid proximally, 1--4 cm wide; rachis brown proximally, green distally, straight, rounded adaxially, glabrous to sparsely villous. Pinnae ascending or perpendicular to rachis, decurrent on rachis, deeply 2-lobed (mitten-shaped) near base of leaf; costae absent. Ultimate segments lanceolate-deltate, 5--25 mm, herbaceous, glabrous; margins recurved on fertile segments, covering less than 1/2 abaxial surface, borders whitish, erose-denticulate; apex obtuse or rounded. Veins of ultimate segments evident. Sporangia sessile or subsessile, containing 64 spores, not intermixed with farina-producing glands. 2 n = 58.
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Ecology

Habitat

Sporulating summer--fall. Cliffs and rocky slopes, on a variety of substrates including granite and limestone; 1600--3800m.
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Molecular Biology and Genetics

Molecular Biology

Barcode data: Pellaea breweri

The following is a representative barcode sequence, the centroid of all available sequences for this species.


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Statistics of barcoding coverage: Pellaea breweri

Barcode of Life Data Systems (BOLDS) Stats
Public Records: 1
Specimens with Barcodes: 1
Species With Barcodes: 1
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Conservation

Conservation Status

National NatureServe Conservation Status

United States

Rounded National Status Rank: NNR - Unranked

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NatureServe Conservation Status

Rounded Global Status Rank: G5 - Secure

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Wikipedia

Pellaea breweri

Pellaea breweri is a species of fern known by the common name Brewer's cliffbrake. It is native to much of the Western United States. It grows in rocky habitat such as cliffs and mountain slopes.

Description

Pellaea breweri grows from a branching reddish-brown rhizome covered in hairlike scales. Each leaf is up to 20 or 25 centimeters long. It is composed of a shiny brown rachis lined with widely spaced leaflets. The thick, pale green leaflets vary in shape from lance-shaped to diamond, triangular, or spade-shaped, and are sometimes divided deeply into lobes, or into two smaller leaflets. The edges of each segment are rolled under. The sporangia are located under the edges.

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Notes

Comments

Pellaea breweri is distinguished from other North American taxa (except for some populations of P . glabella ) by the presence of prominent articulation lines near the base of the petiole. The leaves are easily detached, and many herbarium specimens consist of separate leaves and stems, the latter covered with petiole bases of approximately equal length.
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