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Polystichum lemmonii

Polystichum lemmonii Underw.

Lemmon's Holly Fern, Shasta Holly Fern

Dryopteridaceae (Wood Fern Family)

Synonym(s): Polystichum mohrioides

USDA Symbol: POLE5

USDA Native Status: L48 (N), CAN (N)

An evergreen, drift-forming, Lemmonís holly fern with relatively soft, 4-8 in. long, bipinnate fronds. The pinnae are neatly scalloped and arranged in a tightly overlapping pattern.


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Plant Characteristics

Duration: Perennial
Habit: Herb , Fern
Leaf Retention: Evergreen
Leaf Complexity: Bipinnate
Size Class: 0-1 ft.

Bloom Information

Bloom Color: Not Applicable
Bloom Notes: Not a flowering plant. Reproduces by spores.


USA: CA , ID , OR , WA
Canada: BC
Native Distribution: N. CA & s.w. OR; also the Wenatchee Mts., WA & n. ID
Native Habitat: Open, rocky, serpentine slopes below timberline

Growing Conditions

Light Requirement: Part Shade
Soil Moisture: Dry
Soil Description: Basic, magnesium-rich rocks.
Conditions Comments: Grown from spores at rare plant nurseries. Success is possible with a cool, moist root run and reduced winter sogginess.


Description: Propagate from spores.
Seed Collection: Not Available
Seed Treatment: Not Available
Commercially Avail: yes

Additional resources

USDA: Find Polystichum lemmonii in USDA Plants
FNA: Find Polystichum lemmonii in the Flora of North America (if available)
Google: Search Google for Polystichum lemmonii


Record Modified: 2017-11-15
Research By: TWC Staff

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