CPC Plant Profile: Munz's Mariposa Lily
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Plant Profile

Munz's Mariposa Lily (Calochortus palmeri var. munzii)

This shot shows details of this milkvetch. Photo Credit: Mark Elvin
  • Global Rank: T3 - Vulnerable
  • Legal Status: N/A
  • Family: Liliaceae
  • State: CA
  • Nature Serve ID: 138115
  • Date Inducted in National Collection: 03/15/1995

Very little information is known about this species, although it appears to be relatively stable despite the fact that fewer than 2,000 plants remain in the wild. (Dudek & Associates Inc. 1999)

Participating Institutions
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  • 09/01/2020
  • Orthodox Seed Banking

Based on an September 2020 extract of the California Plant Rescue Database, California Botanic Garden holds 7 accessions of Calochortus palmeri var. munzii in orthodox seed collection. There are as many as 32720 seeds of this species in their collection - although some may have been used for curation testing or sent to back up.

  • 08/05/2020
  • Seed Collection

Based on an August 2020 extract of the California Plant Rescue Database, California Botanic Garden has collected 7 seed accessions of Calochortus palmeri var. munzii from 5 plant occurrences listed in the California Natural Diversity Database. These collections together emcompass 805 maternal plants

Nature Serve Biotics
  • 05/02/2017

Endemic to California, Calochortus palmeri var. munzii is known from only 30 occurrences in the San Jacinto Mountains in Riverside and San Diego?Counties. Potential threats include grazing, hydrologic alterations, non-native species, and recreational activities.

  • 01/01/2010

Road work or maintenance activities

  • 01/01/2010

As of 1995, three populations were known, containing a total of 1,750 individuals among them. (Dudek & Associates Inc. 1999).

  • 01/01/2010

None known.

  • 01/01/2010

Two of the three known populations are found within public lands of San Bernadino National Forest. For this reason, this species is considered adequately conserved. (Dudeck & Associates Inc. 1999)

  • 01/01/2010

Maintain appropriate habitat conditions at all three known locations.

  • 01/01/2010

Maintain a genetically representative seed bank.


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Taxon Calochortus palmeri var. munzii
Authority Ownbey
Family Liliaceae
CPC Number 14326
ITIS 527030
Common Names Munz mariposa lily | Munz's mariposa lily
Associated Scientific Names Calochortus palmeri var. munzii
Distribution San Jacinto Mountains in western Riverside County, CA (Dudek & Associates Inc. 1999)
State Rank
State State Rank
California S3

Occurs on exposed knolls in either shaded yellow pine woodland, on seasonally moist, fine loamy soils, chaparral on moist, sandy clay soils, or native grassland. (Dudek & Associates Inc. 1999)

Ecological Relationships


Common Name Name in Text Association Type Source InteractionID
Lead Institution State Reintroduction Type Year of First Outplanting

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