Taxon Details

Layia carnosa

beach layia

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Taxon Summary:

Layia carnosa, commonly known as beach layia, is a annual herb in the Asteraceae that is found in California and elsewhere. It occurs within Coastal dunes, and Coastal scrub (sandy), growing at elevations from 0 to 60 meters. Layia carnosa is ranked 1B.1, Plants Rare, Threatened or Endangered in California and Elsewhere; Seriously threatened in California.

Classification

Scientific Name: Layia carnosa (Nutt.) T. & G.
Common Name: beach layia
Family:	Asteraceae
Element Code:	PDAST5N010
USDA Plants Symbol:	LACA4
Synonyms/Other Names:
Name Status:	JEF, FNA, POWO, IPNI, Tropicos

Conservation Status

CA Rare Plant Rank:	1B.1
Fed List:	FT (2022-05-02)
State List:	CE (1990-01-01)
Global Rank:	G2
State Rank:	S2
Other Status:	SB_CalBG/RSABG; SB_SBBG
CRPR Changes:
Add Date:	1988-01-01
Date Edited:	2023-06-06

Ecology and Life History

Lifeform: annual herb

Blooming Period: Mar-Jul

Elevation:
0 - 60 meters
0 - 195 feet

General Habitats:

Coastal dunes
Coastal scrub (sandy)

Microhabitat Details:

Microhabitat:

Notes

Notes: Reclassified from federally endangered to threatened on 2022-03-31 due to substantial improvements in the species' overall status since its original listing as endangered in 1992.
Threats: Threatened by coastal development, foot traffic, vehicles, and non-native plants.
Taxonomy:

Threat List Data from the CNDDB

THREAT LIST:
Threat List Total:	12
	Total EOs	% of EOs
EOs with Threat Listed:	23	92 %
Non-native plant impacts	19	76%
Foot traffic/trampling	8	32%
ORV activity	6	24%
Recreational use (non-ORV)	5	20%
Grazing	5	20%
Development	5	20%
Road/trail construction/maint.	3	12%
Other	1	4%
Erosion/runoff	1	4%
Feral pigs	1	4%
Military operations	1	4%
Biocides	1	4%

Occurrence Data from the CNDDB

Element Occurrence Ranks:
Total Occurrences:					25
A	B	C	D	X	U
2	10	6	0	4	3

Occurrence Status:
Historical >20 Years	13
Recent <=20 Years	12

Presence:
Presumed Extant	21
Possibly Extirpated	2
Presumed Extirpated	2

Location

California Endemic:

California Island:

States: Name (Code)
California (CA), Oregon (OR)

California Counties and Islands: Name (Code)
Humboldt (HUM), Marin (MRN), Monterey (MNT), San Francisco (SFO)*, San Mateo (SMT), Santa Barbara (SBA)*

Quads: Name (Quad Code)
Cannibal Island (4012463), Casmalia (3412075), Crannell (4112411)*, Drakes Bay (3812218), Eureka (4012472), Fields Landing (4012462), Hunters Point (3712263), Monterey (3612158), Oakland West (3712273), Orick (4112431), Petrolia (4012433), Point Arguello (3412056)*, Point Bonita (3712275), San Francisco North (3712274)*, San Francisco South (3712264), Surf (3412065), Tomales (3812228), Tyee City (4012482)

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

Click on quad for name. Hold Shift Key to use mouse scroll wheel

Other:	Reclassification of the Endangered Layia carnosa (Beach Layia) to Threatened With Section 4(d) Rule (Federal Register 2022)
Other:	Seven Coastal Plants and the Myrtle's Silverspot Butterfly Recovery Plan (USFWS 1998)
Other:	Species Status Assessment Report for Beach Layia (Layia carnosa) (USFWS 2018)

CNPS Rare Plant Inventory