Allium siskiyouense Calflora

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Taxon Report

Allium siskiyouense Ownbey ex Traub

Siskiyou onion

Allium siskiyouense is a perennial herb (bulb) that is native to California, and also found in Oregon.

California Rare Plant Rank: 4.3 (limited distribution).


	Plant Range Observation Search ~101 records in California Plant Characteristics one or more occurrences within a 7.5-minute quadrangle

Bloom Period

Photos on Calflora


Genus:	Allium
Family:	Alliaceae (Liliaceae)
Category:	angiosperm
PLANTS group:	Monocot
Jepson eFlora section: monocot

Ultramafic affinity: 2.8 - strong indicator

Communities: Yellow Pine Forest, Red Fir Forest

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

Alternate Names:


JEF + PLANTS	Allium falcifolium var. demissum

Information about Allium siskiyouense from other sources


Nursery availability from CNPLX Commercial availability unknown. Jepson eFlora USDA PLANTS Profile (ALSI2) Photos on Calflora Photos on CalPhotos Google Images Photos on iNaturalist ID Tips on PlantID.net	ITIS Original Publication citation International Plants Names Index Search efloras.org (Flora of North America) Landscape information from Calscape BONAP Distribution Map CNPS Inventory: 4.3 Consortium of California Herbaria 2 Search the Native American Ethnobotany Database	Add an Observation Location Suitability Planting Guide Distribution by County
[Wikipedia] Range, Habitat: It is native to the Klamath Mountains and nearby ranges of northern California and Oregon.[2] It grows in serpentine and other rocky soil types.[3] (link added by Mary Ann Machi) photos / record / common / links

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).