Taxon Report

Limnanthes douglasii R. Br. ssp. sulphurea (C.T. Mason) C.T. Mason

Point Reyes meadowfoam

Print Report

Taxon Summary

Limnanthes douglasii ssp. sulphurea, commonly known as Point Reyes meadowfoam, is a annual herb in the Limnanthaceae that is found only in California. It occurs within Coastal prairie, Marshes and swamps (freshwater), Meadows and seeps (mesic), and Vernal pools, growing at elevations from 0 to 140 meters. Limnanthes douglasii ssp. sulphurea is ranked 1B.2, Plants Rare, Threatened or Endangered in California and Elsewhere; Moderately threatened in California.

Classification


Scientific Name:	Limnanthes douglasii R. Br. ssp. sulphurea (C.T. Mason) C.T. Mason
Common Name:	Point Reyes meadowfoam
Family:	Limnanthaceae
Element Code:	PDLIM02038
USDA Plants Symbol:	LIDOS2
Synonyms/Other Names:

Ecology and Life History


Lifeform:	annual herb
Blooming Period: Mar-May	Mar-May
Elevation:	0-140 (0-460)
General Habitats:	Coastal prairie, Marshes and swamps, Meadows and seeps, Vernal pools
Microhabitat:
Microhabitat Details:

Conservation Status


CA Rare Plant Rank:	1B.2
Global Rank:	G4T1
State Rank:	S1
State List:	CE
Fed List:	None
Other Status:	SB_UCBG
CRPR Changes:

Occurrence Data from the CNDDB


Total Occurrences:	12
Element Occurrence Ranks:
Excellent (A)	0
Good (B)	8
Fair (C)	3
Poor (D)	1
None (X)	0
Unknown (U)	0

Location


California Endemic: True
California Counties and Islands: Name (Code)
Marin (MRN), San Mateo (SMT)
Quads: Name (Quad Code)
Drakes Bay (3812218), Franklin Point (3712223)

Threat List Data from the CNDDB


Threat List Total:	5
EOs with Threat Listed:	Total EOs	% of EOs
	11	92 %
Grazing	10	83%
Foot traffic/trampling	5	41%
Other	4	33%
Road/trail construction/maint.	3	25%
Non-native plant impacts	3	25%

Notes



Known from fewer than fifteen occurrences. Threatened by grazing, trampling, and non-native plants. See University of California Publications in Botany 25:477 (1952) for original description.
Threats:

Taxonomy:

Selected References

Citation California Native Plant Society, Rare Plant Program. 2025. Rare Plant Inventory (online edition, v9.5.1). Website https://www.rareplants.cnps.org [accessed 30 January 2025].