Species Details

Calochortus westonii

Shirley Meadows star-tulip

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Classification

Scientific Name: Calochortus westonii Eastw.
Common Name: Shirley Meadows star-tulip
Family:	Liliaceae
Element Code:	PMLIL0D1M0
USDA Plants Symbol:	CAWE2
Synonyms/Other Names: Calochortus coeruleus (Kell.) Wats. var. westonii (Eastw.) Ownbey

Conservation Status

CA Rare Plant Rank:	1B.2
Fed List:	None
State List:	None
Global Rank:	G3
State Rank:	S3
Other Status:	BLM_S; SB_CalBG/RSABG; SB_UCSC; USFS_S
CRPR Changes:
Add Date:	1974-01-01
Date Edited:	2022-12-06

Ecology and Life History

Lifeform: perennial bulbiferous herb

Blooming Period: May-Jun

Elevation:
1500 - 2105 meters
4920 - 6905 feet

General Habitats:

Broadleafed upland forest
Lower montane coniferous forest
Meadows and seeps

Microhabitat Details:

Microhabitat:

Granitic

Notes

Notes: Threatened by logging, road construction, and vehicles. Sequoia NF has adopted species management guidelines. See Proceedings of the California Academy of Sciences IV 20:136 (1931) for original description.
Threats:
Taxonomy:

Threat List Data from the CNDDB

THREAT LIST:
Threat List Total:	11
	Total EOs	% of EOs
EOs with Threat Listed:	14	58 %
Logging	9	37%
Improper burning regime	5	20%
Grazing	3	12%
Other	3	12%
Road/trail construction/maint.	2	8%
Wood cutting or brush clearing	1	4%
Over-collecting/poaching	1	4%
Recreational use (non-ORV)	1	4%
ORV activity	1	4%
Development	1	4%
Foot traffic/trampling	1	4%

Occurrence Data from the CNDDB

Element Occurrence Ranks:
Total Occurrences:					24
A	B	C	D	X	U
7	12	2	0	0	3

Occurrence Status:
Historical >20 Years	20
Recent <=20 Years	4

Presence:
Presumed Extant	24
Possibly Extirpated	0
Presumed Extirpated	0

Location

California Endemic:

California Island:

States: Name (Code)
California (CA)

California Counties and Islands: Name (Code)
Kern (KRN), Tulare (TUL)

Quads: Name (Quad Code)
Alta Sierra (3511865), Camp Nelson (3611825), Camp Wishon (3611826), Case Mountain (3611847), Johnsondale (3511885), Sentinel Peak (3611815), Tobias Peak (3511875)

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