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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, Lemmon’s Holly Fern with relatively soft, 4-14 in. long, bipinnate fronds. The pinnae are neatly scalloped and arranged in a tightly overlapping pattern.
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Plant Characteristics
Duration: PerennialHabit: Herb , Fern
Leaf Retention: Evergreen
Leaf Complexity: Bipinnate
Size Notes: Fronds up to about 14 inches long.
Bloom Information
Bloom Color: Not ApplicableBloom Notes: Not a flowering plant. Reproduces by spores.
Distribution
USA: CA , ID , OR , WACanada: 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 ShadeSoil 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.
Propagation
Description: Propagate from spores.Commercially Avail: yes
Web Reference
Webref 38 - Flora of North America (2019) Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.Webref 23 - Southwest Environmental Information Network (2009) SEINet - Arizona Chapter
Additional resources
USDA: Find Polystichum lemmonii in USDA PlantsFNA: Find Polystichum lemmonii in the Flora of North America (if available)
Google: Search Google for Polystichum lemmonii
Metadata
Record Modified: 2023-02-23Research By: TWC Staff