CNPS.ORG Inventory of Rare and Endangered Plants - 7th edition interface
v7-18mar 3-19-18
Status: record allium_howellii_var._sanbenitense - Wed, Dec. 1, 2021, 01:29 ET b
Allium howellii var. sanbenitense
common nameSan Benito onion
CalPhotos image
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life form bulbiferous herb
CA Rare Plant Rank
List 1B.3
LIST 1B: Rare, threatened, or endangered in California and elsewhere.
     0.3: Not very endangered in California
state rank
S3      ranking system key
global rank
G3G4T3   G3G4: Intermediate between G3 and G4
CA state listingNone  
federal listingNone  
where found
MAPS - Use v8 link below.

Topographic quads (9):
Priest Valley (316B) 3612026, Monarch Peak (317A) 3612027, Ciervo Mountain (339A) 3612045, Idria (339B) 3612046, San Benito Mountain (339C) 3612036, Tumey Hills (361C) 3612056, Monocline Ridge (361D) 3612055, Mercey Hot Springs (362A) 3612067, Panoche (362D) 3612057
quad data info

Counties, states, regions:
Fresno (FRE), Monterey (MNT), San Benito (SBT)
A reminder: Species not recorded for a given area may nonetheless be present, especially where favorable conditions occur.
CNPS habitats•Chaparral (Chprl)(openings)
•Valley and foothill grassland (VFGrs)/Clay, often steep slopes
blooming period Apr-May  
elevation range390 - 1365 meters
Possibly threatened by grazing and development. See Herbertia 12:68 (1945) for original description, and Plant Life 28:66 (1972) and Flora of North America 26:251 (2003) for revised nomenclature.
full nameAllium howellii Eastw. var. sanbenitense (Traub) McNeal & T.D. Jacobsen
Version 8    INVENTORY VERSION 8 interface for this taxon, including GIS and more links

Additional information:
standard acronym  ALHOS Element Code  PMLIL02163
CalFlora species this taxon    CalFlora genus related taxa
Jepson Online Jepson Interchange  Jepson Manual and other resources
Google search
search Google CNPS website    search Google entire web

Suggested citation: California Native Plant Society (CNPS). 2018. Inventory of Rare and Endangered Plants (online edition, v7-18mar). California Native Plant Society. Sacramento, CA. Accessed on Wed, Dec. 1, 2021 from

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