Taxon Details

Allium peninsulare var. franciscanum

Franciscan onion

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Photo of Allium peninsulare var. franciscanum

Taxon Summary:

Allium peninsulare var. franciscanum, commonly known as Franciscan onion, is a perennial bulbiferous herb in the Alliaceae that is found only in California. It occurs within Cismontane woodland, and Valley and foothill grassland, growing at elevations from 52 to 305 meters. Allium peninsulare var. franciscanum is ranked 1B.2, Plants Rare, Threatened or Endangered in California and Elsewhere; Moderately threatened in California.

Classification

Scientific Name: Allium peninsulare Lemmon var. franciscanum D. McNeal & Ownbey
Common Name: Franciscan onion
Family:	Alliaceae
Element Code:	PMLIL021R1
USDA Plants Symbol:	ALPEF
Synonyms/Other Names:
Name Status:	JEF, FNA, POWO, IPNI, Tropicos

Conservation Status

CA Rare Plant Rank:	1B.2
Fed List:	None
State List:	None
Global Rank:	G4G5T2
State Rank:	S2
Other Status:	SB_CalBG/RSABG
CRPR Changes:
Add Date:	2001-01-01
Date Edited:	2023-06-06

Ecology and Life History

Lifeform: perennial bulbiferous herb

Blooming Period: (Apr)May-Jun

Elevation:
52 - 305 meters
170 - 1000 feet

General Habitats:

Cismontane woodland
Valley and foothill grassland

Microhabitat Details:

Microhabitat:

Clay
Serpentine (often)
Volcanic

Notes

Notes: Threatened by development, foot traffic, non-native plants, and trail maintenance. See Phytologia 73(4):310 (1992) for original description.
Threats:
Taxonomy:

Threat List Data from the CNDDB

THREAT LIST:
Threat List Total:	6
	Total EOs	% of EOs
EOs with Threat Listed:	13	52 %
Foot traffic/trampling	5	20%
Road/trail construction/maint.	5	20%
Non-native plant impacts	4	16%
Other	3	12%
Wood cutting or brush clearing	1	4%
Development	1	4%

Occurrence Data from the CNDDB

Element Occurrence Ranks:
Total Occurrences:					25
A	B	C	D	X	U
2	6	3	0	0	14

Occurrence Status:
Historical >20 Years	10
Recent <=20 Years	15

Presence:
Presumed Extant	25
Possibly Extirpated	0
Presumed Extirpated	0

Location

California Endemic:

California Island:

States: Name (Code)
California (CA)

California Counties and Islands: Name (Code)
Mendocino (MEN), Napa (NAP), San Mateo (SMT), Santa Clara (SCL), Sonoma (SON)

Quads: Name (Quad Code)
Bodega Head (3812331), Cloverdale (3812371), Kenwood (3812245), Montara Mountain (3712254), Napa (3812233), Palo Alto (3712242), Petaluma (3812226), Petaluma River (3812225), San Francisco South (3712264), San Mateo (3712253), Sonoma (3812234), Woodside (3712243)

Notes:

Definitions of codes following a county and/or quad:
*		Presumed extirpated
(?)		Occurrence confirmed, but possibly extirpated
Quad and county data is imported from the CNDDB. Species may be present in other areas where conditions are favorable. These data should NOT be substituted for pre-project review or for on-site surveys.

Regional Map

Map

Presumed Extant

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CNPS Rare Plant Inventory