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Taxon  Report  
Polystichum kruckebergii  W. H. Wagner
Kruckeberg's hollyfern,   Kruckeberg's sword fern
Polystichum kruckebergii is a fern (rhizomatous) that is native to California, and also found elsewhere in western North America.
California Rare Plant Rank: 4.3 (limited distribution).
Siskiyou Del Norte Modoc Humboldt Shasta Lassen Trinity Plumas Tehama Butte Mendocino Glenn Sierra Yuba Lake Nevada Colusa Placer Sutter El Dorado Yolo Alpine Napa Sonoma Sacramento Mono Amador Solano Calaveras Tuolumne San Joaquin Marin Contra Costa Alameda Santa Cruz Mariposa Madera San Francisco San Mateo Merced Fresno Stanislaus Santa Clara Inyo San Benito Tulare Kings Monterey San Bernardino San Luis Obispo Kern Santa Barbara Ventura Los Angeles Riverside Orange San Diego Imperial
Observation Search
~36 records in California
yellowone or more occurrences
within a 7.5-minute quadrangle
DJJJASONAFMM

Bloom Period
Genus: Polystichum
Family: Dryopteridaceae  
Category: fern  
PLANTS group:Fern
Jepson eFlora section: fern

Communities: Red Fir Forest, Subalpine Forest
Name Status:
Accepted by JEF + CNPS + PLANTS + POWO
Information about  Polystichum kruckebergii from other sources
Nursery availability from CNPLX
Commercial availability unknown.
Jepson eFlora

USDA PLANTS Profile (POKR)

Photos on Calflora

Photos on CalPhotos

Google Images

Photos on iNaturalist

ID Tips on PlantID.net

[Wikipedia] Range, Habitat: It is native to western North America from Alaska to Utah to California, where it grows in rocky mountain habitat in subalpine and alpine climates. (link added by Mary Ann Machi)


Suggested Citation
Calflora: Information on California plants for education, research and conservation, with data contributed by public and private institutions and individuals. [web application]. 2025. The Calflora Database [a non-profit organization]. Available: https://www.calflora.org/   (Accessed: 05/20/2025).