Taxon  Report   202    
Allium howellii  Eastw.  var. sanbenitense  (Traub) McNeal & T. D. Jacobsen
San benito onion
Allium howellii var. sanbenitense
© 2017 Amelia Ryan/NPS
Photos from
CalPhotos / Calflora
Allium howellii var. sanbenitense, a monocot, is a perennial herb (bulb) that is native to California, is endemic (limited) to California.
CNPS Rare Plant Rank: 1B.3 (rare, threatened, or endangered in CA and elsewhere).   8th Edition

Interactive Distribution Map

Observation Hotline
(observation details)

point, line, or polygon

one or more occurrences
within a 7.5-minute quadrangle

Plant Characteristics
and Associations

Bloom Period
Genus: Allium
Parent: Allium howellii
Toxicity: MINOR

Serpentine affinity: 4; (broad endemic / strong indicator)

Name Status:
Accepted by JEF + CNPS + PLANTS

Alternate Names:
PLANTS: Allium howellii ssp. sanbenitense
PLANTS: Allium sanbenitense
More information about  Allium howellii var. sanbenitense
Nursery / seed vendor availability from CNPLX
Commercial availability unknown.
Landscaping information from Calscape
Photos on Google Images
Jepson eFlora

Records from the Consortium of California Herbaria

ITIS Original Publication citation


Search the International Plants Names Index

Search (Flora of North America)

website references from Google

Suggested Citation
Calflora: Information on California plants for education, research and conservation, with data contributed by public and private institutions and individuals, including the Consortium of California Herbaria. [web application]. 2019. Berkeley, California: The Calflora Database [a non-profit organization]. Available:   (Accessed: Jan 17, 2019).