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Taxon  Report  
Asplenium septentrionale  (L.) Hoffm.
Northern spleenwort
Asplenium septentrionale is a fern (rhizomatous) that is native to California, and also found elsewhere in North America and beyond.
California Rare Plant Rank: 2B.3 (rare, threatened, or endangered in CA; common elsewhere).
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
~25 records in California
yellowone or more occurrences
within a 7.5-minute quadrangle
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Bloom Period
Genus: Asplenium
Family: Aspleniaceae  
Category: fern  
PLANTS group:Fern
Jepson eFlora section: fern

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

USDA PLANTS Profile (ASSE)

Photos on Calflora

Photos on CalPhotos

Google Images

Photos on iNaturalist

ID Tips on PlantID.net

[Wikipedia] Hybridizations: Asplenium septentrionale can hybridize with maidenhair spleenwort (A. trichomanes) to form the hybrid A. × alternifolium, with A. foreziense to form A. × costei, with black spleenwort (A. adiantum-nigrum) to form A. × contrei, with A. obovatum subsp. lanceolatum to form A. × souchei, and with wall-rue (A. ruta-muraria) to form A. × murbeckii and A. × tavelio. A. × murbeckii can back-cross with A. septentrionale to form A. × hungaricum. (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: 05/19/2025).