Species Details

Calochortus plummerae

Plummer's mariposa-lily

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Scientific Name:
Calochortus plummerae Greene
Common Name:
Plummer's mariposa-lily
Family: Liliaceae
Element Code: PMLIL0D150
USDA Plants Symbol: CAPL2
Synonyms/Other Names:
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
Lifeform: perennial bulbiferous herb
Blooming Period: May-Jul
JFMAMJJASOND
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:
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 Total: 14
Total EOs % of EOs
EOs with Threat Listed: 122 53 %
THREAT LIST:
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%
Total Occurrences: 230
Element Occurrence Ranks:
A B C D X U
4 37 25 12 8 144
Occurrence Status:
Historical >20 Years 125
Recent <=20 Years 105
Presence:
Presumed Extant 222
Possibly Extirpated 7
Presumed Extirpated 1
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.
Presumed Extant
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