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Allium cratericola  Eastw.
Cascade onion
© 2016 BOB CASE
© 2022 Cynthia Powell
© 2017 David Greenberger
© 2016 BOB CASE
© 2024 Mike Russler
© 2019 Matt Berger
© 2024 Mike Russler
© 2024 Mike Russler
© 2024 Mike Russler
© 2024 Mike Russler
© 2024 Mike Russler
© 2022 Cynthia Powell
© 2022 Cynthia Powell
© 2022 Cynthia Powell
© 2019 Ramona Robison
© 2019 Amy Rapport
© 2025 Alaine Arslan
© 2024 Karen Swift
© 2023 Eric Koberle
© 2023 Eric Koberle
© 2016 BOB CASE
Allium cratericola is a perennial herb (bulb) that is native to California, and endemic (limited) to California.
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
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Bloom Period
Genus: Allium
Family: Alliaceae  
(Liliaceae)
Category: angiosperm  
PLANTS group:Monocot
Jepson eFlora section: monocot

Ultramafic affinity: 2.6 - strong indicator

Communities: Foothill Woodland, Chaparral

Name Status:
Accepted by JEF + JEF + PLANTS + POWO

Alternate Names:
PLANTSAllium parvum var. brucae
PLANTSAllium parvum var. jacintense
JEFAllium tribracteatum var. jacintense
Information about  Allium cratericola from other sources
Nursery availability from CNPLX
This plant is available commercially.
Jepson eFlora

USDA PLANTS Profile (ALCR3)

Photos on Calflora

Photos on CalPhotos

Google Images

Photos on iNaturalist

ID Tips on PlantID.net

[picturethisai.com] Description, Habitat: Cascade onion is a wild onion species with a globe-shaped cluster of starry white to pink flowers. It exhibits narrow, hollow leaves and typically grows in volcanic soils, thriving in its specific niche within California’s mountainous regions. Its bulbous underground structure affords resilience in harsh conditions, making cascade onion a rugged, yet delicate, component of its ecosystem. (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: 03/30/2025).