Species Details

Eriophyllum latilobum

San Mateo woolly sunflower

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Species Description:

Eriophyllum latilobum, commonly known as San Mateo woolly sunflower, is a perennial herb in the Asteraceae that is found only in California. It occurs within Cismontane woodland (often roadsides), Coastal scrub, and Lower montane coniferous forest, growing at elevations from 45 to 330 meters. Eriophyllum latilobum is ranked 1B.1, Plants Rare, Threatened or Endangered in California and Elsewhere; Seriously threatened in California.

Classification

Scientific Name: Eriophyllum latilobum Rydb.
Common Name: San Mateo woolly sunflower
Family:	Asteraceae
Element Code:	PDAST3N060
USDA Plants Symbol:	ERLA8
Synonyms/Other Names:
Name Status:	JEP, FNA, POWO, IPNI, Tropicos

Conservation Status

CA Rare Plant Rank:	1B.1
Fed List:	FE (1995-02-03)
State List:	CE (1992-06-01)
Global Rank:	G1
State Rank:	S1
Other Status:	SB_CalBG/RSABG
CRPR Changes:
Add Date:	1974-01-01
Date Edited:	2025-01-07

Ecology and Life History

Lifeform: perennial herb

Blooming Period: May-Jun

Elevation:
45 - 330 meters
150 - 1085 feet

General Habitats:

Cismontane woodland (often roadsides)
Coastal scrub
Lower montane coniferous forest

Microhabitat Details:

Microhabitat:

Notes

Notes: Rediscovered in 1981 by K. Culligan and M.A. Showers. Specimens from NAP Co. need verification. References that treat this plant as a serpentine obligate are erroneous.
Threats: Threatened by development, erosion, and road maintenance.
Taxonomy:

Threat List Data from the CNDDB

THREAT LIST:
Threat List Total:	9
	Total EOs	% of EOs
EOs with Threat Listed:	6	75 %
Road/trail construction/maint.	3	37%
Other	2	25%
Altered flood/tidal/hydrologic regime	2	25%
Erosion/runoff	2	25%
Mining	1	12%
Non-native plant impacts	1	12%
Biocides	1	12%
Development	1	12%
Wood cutting or brush clearing	1	12%

Occurrence Data from the CNDDB

Element Occurrence Ranks:
Total Occurrences:					8
A	B	C	D	X	U
1	2	1	0	1	3

Occurrence Status:
Historical >20 Years	2
Recent <=20 Years	6

Presence:
Presumed Extant	7
Possibly Extirpated	1
Presumed Extirpated	0

Location

California Endemic:

California Island:

States: Name (Code)
California (CA)

California Counties and Islands: Name (Code)
San Mateo (SMT)

Quads: Name (Quad Code)
La Honda (3712233)*, Mindego Hill (3712232), Montara Mountain (3712254), San Mateo (3712253)

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