Species Details

Calochortus obispoensis

San Luis mariposa-lily

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Classification

Scientific Name: Calochortus obispoensis Lemmon
Common Name: San Luis mariposa-lily
Family:	Liliaceae
Element Code:	PMLIL0D110
USDA Plants Symbol:	CAOB
Synonyms/Other Names:

Conservation Status

CA Rare Plant Rank:	1B.2
Fed List:	None
State List:	None
Global Rank:	G2
State Rank:	S2
Other Status:	BLM_S; SB_CalBG/RSABG; SB_SBBG; USFS_S
CRPR Changes:
Add Date:	1974-01-01
Date Edited:	2024-11-05

Ecology and Life History

Lifeform: perennial bulbiferous herb

Blooming Period: May-Jul

Elevation:
50 - 730 meters
165 - 2395 feet

General Habitats:

Chaparral
Cismontane woodland
Coastal scrub
Valley and foothill grassland

Microhabitat Details:

Microhabitat:

Serpentine (often)

Notes

Notes: Threatened by grazing, development, pipeline construction, road construction, and recreational activities. Potentially threatened by vegetation/fuel management and mining. See Journal of Ecology 75:977-995 (1987) for population biology.
Threats:
Taxonomy:

Threat List Data from the CNDDB

THREAT LIST:
Threat List Total:	14
	Total EOs	% of EOs
EOs with Threat Listed:	30	65 %
Grazing	13	28%
Foot traffic/trampling	12	26%
Non-native plant impacts	9	19%
Development	8	17%
Feral pigs	5	10%
Military operations	5	10%
Other	5	10%
Road/trail construction/maint.	5	10%
Improper burning regime	4	8%
Erosion/runoff	3	6%
Recreational use (non-ORV)	3	6%
Mining	2	4%
ORV activity	1	2%
Wood cutting or brush clearing	1	2%

Occurrence Data from the CNDDB

Element Occurrence Ranks:
Total Occurrences:					46
A	B	C	D	X	U
4	20	5	0	0	17

Occurrence Status:
Historical >20 Years	23
Recent <=20 Years	23

Presence:
Presumed Extant	46
Possibly Extirpated	0
Presumed Extirpated	0

Location

California Endemic:

California Island:

States: Name (Code)
California (CA)

California Counties and Islands: Name (Code)
San Luis Obispo (SLO)

Quads: Name (Quad Code)
Arroyo Grande NE (3512025), Atascadero (3512046), Lopez Mtn. (3512035), Morro Bay South (3512037), Pebblestone Shut-in (3512161), Pismo Beach (3512026), Port San Luis (3512027), San Luis Obispo (3512036)

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