Taxon Report

Lomatium repostum (Jeps.) Math.

Napa lomatium

Print Report

Classification


Scientific Name:	Lomatium repostum (Jeps.) Math.
Common Name:	Napa lomatium
Family:	Apiaceae
Element Code:	PDAPI1B1M0
USDA Plants Symbol:	LORE2
Synonyms/Other Names:

Ecology and Life History


Lifeform:	perennial herb
Blooming Period: Mar-Jun	Mar-Jun
Elevation:	90-1440 (295-4725)
General Habitats:	Broadleafed upland forest, Chaparral, Cismontane woodland
Microhabitat:	Gravelly (sometimes), Openings (often), Rocky (sometimes), Sandstone (rarely), Serpentine, Volcanic (often)
Microhabitat Details:	Flat to steep slopes in chaparral and woodland (mixed evergreen forest, often with madrone).

Conservation Status


CA Rare Plant Rank:	4.2
Global Rank:	G3
State Rank:	S3
State List:	None
Fed List:	None
Other Status:	SB_UCSC
CRPR Changes:	changed from 1B.2 to 4.2 on 2023-05-12 changed from 4.3 to 1B.2 on 2021-02-04

Occurrence Data from the CNDDB


Total Occurrences:	0
Element Occurrence Ranks:
Excellent (A)	0
Good (B)	0
Fair (C)	0
Poor (D)	0
None (X)	0
Unknown (U)	0

Location


California Endemic: True
California Counties and Islands: Name (Code)
Lake (LAK), Napa (NAP), Solano (SOL), Sonoma (SON)
Quads: Name (Quad Code)
Aetna Springs (3812264), Brooks (3812262), Calistoga (3812255), Capell Valley (3812242), Chiles Valley (3812253), Clearlake Highlands (3812286), Detert Reservoir (3812265), Geyserville (3812268), Jimtown (3812267), Kelseyville (3812287), Kenwood (3812245), Knoxville (3812273), Lower Lake (3812285), Lucerne (3912217), Mark West Springs (3812256), Middletown (3812275), Mount St. Helena (3812266), Mt. George (3812232), Mt. Vaca (3812241), Rutherford (3812244), Santa Rosa (3812246), Sonoma (3812234), St. Helena (3812254), The Geysers (3812277), Walter Springs (3812263), Whispering Pines (3812276), Wilbur Springs (3912214), Yountville (3812243)

Threat List Data from the CNDDB


Threat List Total:	0
EOs with Threat Listed:	Total EOs	% of EOs
	0	0 %

Notes



Regeneration after fire has been documented; response to severe fire requires more research.
Threats:
Threatened by alteration of fire regimes, development, and agriculture. Potentially threatened by road maintenance.
Taxonomy:

Selected References

Proposed Change from CRPR 4.3, G3/S3 to 1B.2, G2G3/S2S3 (2021)

Proposed Change from CRPR 1B.2, G2G3/S2S3 to 4.2, G3/S3 (2023)

Citation California Native Plant Society, Rare Plant Program. 2025. Rare Plant Inventory (online edition, v9.5.1). Website https://www.rareplants.cnps.org [accessed 7 January 2025].