Polystichum californicum

B.C.; Calif., Oreg., Wash.

Canada

Origin: Native

Regularity: Regularly occurring

Currently: Present

Confidence: Confident

United States

Origin: Unknown/Undetermined

Regularity: Regularly occurring

Currently: Unknown/Undetermined

Confidence: Confident

Stems erect or ascending. Leaves monomorphic, arching or erect, 2--8 dm; bulblets absent. Petiole 1/5--1/3 length of leaf; scales light brown, abruptly diminishing in size distally, falling off early distally. Blade lanceolate to linear-lanceolate, 1-pinnate-pinnatifid, base slightly narrowed. Pinnae oblong to lanceolate to falcate, shallowly to deeply divided, pinnae overlapping or not, in 1 plane, 2--10 cm; base oblique, acroscopic auricle lobed; margins not incised to costae, serrulate-spiny with teeth ascending; apex acute-attenuate, subapical and apical teeth same size (southern form) or obtuse and cuspidate with subapical teeth smaller than apical teeth (northern form); microscales filiform, dense abaxially, sparse adaxially. Indusia ciliate. Spores brown. 2 n = 164.

Aspidium californicum D. C. Eaton, Proc. Amer. Acad. Arts 6: 555. 1865; Polystichum aculeatum (Linnaeus) Roth var. californicum (D. C. Eaton) Jepson

On forest floor in southern part of range and in rock crevices at cliff bottoms (most commonly andesite) to north; 100--850m.

Canada

Rounded National Status Rank: N1 - Critically Imperiled

United States

Rounded National Status Rank: NNR - Unranked

Rounded Global Status Rank: G4 - Apparently Secure