Species Details

Calochortus plummerae

Plummer's mariposa-lily

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Classification

Scientific Name: Calochortus plummerae Greene
Common Name: Plummer's mariposa-lily
Family:	Liliaceae
Element Code:	PMLIL0D150
USDA Plants Symbol:	CAPL2
Synonyms/Other Names:

Conservation Status

CA Rare Plant Rank:	4.2
Fed List:	None
State List:	None
Global Rank:	G4
State Rank:	S4
Other Status:	SB_CalBG/RSABG
CRPR Changes: changed from 1B.2 to 4.2 on 2012-09-24
Add Date:	1994-01-01
Date Edited:	2023-06-06

Ecology and Life History

Lifeform: perennial bulbiferous herb

Blooming Period: May-Jul

Elevation:
100 - 1700 meters
330 - 5580 feet

General Habitats:

Chaparral
Cismontane woodland
Coastal scrub
Lower montane coniferous forest
Valley and foothill grassland

Microhabitat Details:

Microhabitat:

Granitic
Rocky

Notes

Notes: Previously on List 1B.2; more common than originally known. Threatened by development, fire suppression, foot traffic, mining, powerline construction, and recreational activities. Possibly threatened by vegetation clearing, collecting, road maintenance, and non-native plants. Less common at higher elevations. Hybridizes with C. weedii var. intermedius. See Pittonia 2:70 (1890) for original description, and Annals of the Missouri Botanical Garden 27:515 (1940) for taxonomic treatment.
Threats:
Taxonomy:

Threat List Data from the CNDDB

THREAT LIST:
Threat List Total:	14
	Total EOs	% of EOs
EOs with Threat Listed:	122	53 %
Development	58	25%
Road/trail construction/maint.	36	15%
Non-native plant impacts	18	7%
Recreational use (non-ORV)	13	5%
ORV activity	10	4%
Foot traffic/trampling	9	3%
Erosion/runoff	8	3%
Other	6	2%
Wood cutting or brush clearing	6	2%
Mining	5	2%
Improper burning regime	4	1%
Over-collecting/poaching	3	1%
Grazing	1	0%
Landfill	1	0%

Occurrence Data from the CNDDB

Element Occurrence Ranks:
Total Occurrences:					230
A	B	C	D	X	U
4	37	25	12	8	144

Occurrence Status:
Historical >20 Years	129
Recent <=20 Years	101

Presence:
Presumed Extant	222
Possibly Extirpated	7
Presumed Extirpated	1

Location

California Endemic:

California Island:

States: Name (Code)
California (CA)

California Counties and Islands: Name (Code)
Los Angeles (LAX), Orange (ORA), Riverside (RIV), San Bernardino (SBD), San Diego (SDG), Ventura (VEN)

Quads: Name (Quad Code)
Acton (3411842), Agua Dulce (3411843), Azusa (3411728), Bachelor Mtn. (3311751), Baldwin Park (3411718), Beaumont (3311688), Beverly Hills (3411814), Big Bear Lake (3411628), Black Star Canyon (3311776), Blackburn Canyon (3311667), Burbank (3411823), Cabazon (3311687)*, Cahuilla Mtn. (3311657), Cajon (3411734), Calabasas (3411826), Camarillo (3411921), Canoga Park (3411825), Chilao Flat (3411831), Condor Peak (3411832)*, Corona South (3311775), Crystal Lake (3411737), Cucamonga Peak (3411725), Devore (3411724), El Casco (3311781), El Monte (3411811), El Toro (3311766), Fontana (3411714), Forest Falls (3411618), Glendora (3411727), Guasti (3411715), Harrison Mtn. (3411722), Hollywood (3411813)*, Idyllwild (3311666), Keller Peak (3411721), La Habra (3311788), Lake Fulmor (3311677), Lakeview (3311771), Lebec (3411877), Los Angeles (3411812)*, Malibu Beach (3411816), Mint Canyon (3411844), Moonridge (3411627), Mount San Antonio (3411736), Mt. Baldy (3411726), Mt. Wilson (3411821), Newbury Park (3411828), Newhall (3411845), Oat Mountain (3411835), Ojai (3411942), Ontario (3411716)*, Pasadena (3411822)*, Point Dume (3411817), Rancho Santa Fe (3311712), Redlands (3411712), Riverside East (3311783), San Bernardino North (3411723), San Dimas (3411717), San Fernando (3411834), San Gorgonio Mtn. (3411617), San Jacinto (3311678), Santa Susana (3411836), Silverwood Lake (3411733), Simi (3411837), Sunland (3411833), Sunnymead (3311782), Telegraph Peak (3411735)*, Thousand Oaks (3411827), Topanga (3411815)*, Triunfo Pass (3411818), Van Nuys (3411824), Whittier (3311881), Winchester (3311761), Yucaipa (3411711)

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

Click on quad for name. Hold Shift Key to use mouse scroll wheel

Selected References

CNPS Status Review:

Proposed Rank Change from 1B.2, G3 / S3 to 4.2, G4 / S4 (2012)