Taxon Details

Lewisia taylorii

Trinity lewisia

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Taxon Summary:

Lewisia taylorii, commonly known as Trinity lewisia, is a perennial herb in the Montiaceae that is found only in California. It occurs within Chaparral, and Lower montane coniferous forest, growing at elevations from 780 to 1275 meters. Lewisia taylorii is ranked 1B.3, Plants Rare, Threatened or Endangered in California and Elsewhere; Not very threatened in California.

Classification

Scientific Name: Lewisia taylorii O'Brien et al.
Common Name: Trinity lewisia
Family:	Montiaceae
Element Code:
USDA Plants Symbol:
Synonyms/Other Names:
Name Status:	JEF, FNA, POWO, IPNI, Tropicos

Conservation Status

CA Rare Plant Rank:	1B.3
Fed List:	None
State List:	None
Global Rank:
State Rank:
Other Status:
CRPR Changes: added to 1B.3 on 2025-08-11
Add Date:	2025-08-11
Date Edited:	2025-08-11

Ecology and Life History

Lifeform: perennial herb

Blooming Period: May-Jun

Elevation:
780 - 1275 meters
2560 - 4185 feet

General Habitats:

Chaparral
Lower montane coniferous forest

Microhabitat Details: On rocky exposures derived from members of the Bragdon formation.

Microhabitat:

Gravelly
Rocky
Shale

Notes

Notes:
Threats: Potentially threatened by OHV use, road and fuel break construction, timber harvest activities, and vegetation encroachment.
Taxonomy: Discovered in 2010. Genetically distinct from L. kelloggii and differs in bract and sepal characters (glandless and usually entire to occasionally few-toothed vs usually with many gland-tipped teeth), greater number of stamens (17-40 vs 8-36), and shorter styles (5-17 mm vs 0-32 mm).

Threat List Data from the CNDDB

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

Occurrence Data from the CNDDB

Element Occurrence Ranks:
Total Occurrences:					0
A	B	C	D	X	U
0	0	0	0	0	0

Occurrence Status:
Historical >20 Years	0
Recent <=20 Years	0

Presence:
Presumed Extant	0
Possibly Extirpated	0
Presumed Extirpated	0

Location

California Endemic:

California Island:

States: Name (Code)
California (CA)

California Counties and Islands: Name (Code)

Quads: Name (Quad Code)

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

Location Data is Forthcoming from the CNDDB

Presumed Extant

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CNPS Status Review:	Proposed addition to CRPR 1B.3, G2G3 / S2S3 (2025)
Original Description:	Madroño 71(3): 136–142 (2024)

CNPS Rare Plant Inventory