Taxon Report
Calochortus simulans (Hoov.) MunzLa Panza mariposa-lily |
 © 2011 Aaron E. Sims |
Taxon Summary
Calochortus simulans, commonly known as La Panza mariposa-lily, is a perennial bulbiferous herb in the Liliaceae that is found only in California. It occurs within Chaparral, Cismontane woodland, Lower montane coniferous forest, and Valley and foothill grassland, growing at elevations from 325 to 1150 meters. Calochortus simulans is ranked 1B.3, Plants Rare, Threatened or Endangered in California and Elsewhere; Not very threatened in California.Classification
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Scientific Name: |
Calochortus simulans (Hoov.) Munz |
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Common Name: |
La Panza mariposa-lily |
| Family: | Liliaceae |
| Element Code: | PMLIL0D170 |
| USDA Plants Symbol: | CASI7 |
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Synonyms/Other Names: |
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Ecology and Life History
| Lifeform: | perennial bulbiferous herb |
| Blooming Period: Apr-Jun | Apr-Jun |
| Elevation: | 325-1150 (1065-3775) |
| General Habitats: | Chaparral, Cismontane woodland, Lower montane coniferous forest, Valley and foothill grassland |
| Microhabitat: | Granitic (often), Sandy, Serpentine (sometimes) |
| Microhabitat Details: |
Conservation Status
| CA Rare Plant Rank: | 1B.3 |
| Global Rank: | G2 |
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State Rank: |
S2 |
| State List: | None |
| Fed List: | None |
| Other Status: | BLM_S; SB_CRES; SB_SBBG; USFS_S |
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CRPR Changes: |
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Occurrence Data from the CNDDB
| Total Occurrences: | 110 |
| Element Occurrence Ranks: | |
| Excellent (A) | 5 |
| Good (B) | 30 |
| Fair (C) | 24 |
| Poor (D) | 9 |
| None (X) | 0 |
| Unknown (U) | 42 |
| California Endemic: True | |
| California Counties and Islands: Name (Code) | |
| San Luis Obispo (SLO), Santa Barbara (SBA) | |
| Quads: Name (Quad Code) | |
| Atascadero (3512046), Bates Canyon (3411988), Branch Mtn. (3512021), Bryson (3512171), Caldwell Mesa (3512023), California Valley (3512031), Camatta Ranch (3512043), Chimineas Ranch (3511928), Chimney Canyon (3512012), Creston (3512055), La Panza (3512032), Lime Mountain (3512068), Los Machos Hills (3512022), Miranda Pine Mtn. (3512011), Pebblestone Shut-in (3512161), Pismo Beach (3512026), Pozo Summit (3512033), San Luis Obispo (3512036), Santa Margarita (3512045), Santa Margarita Lake (3512034), Shedd Canyon (3512054), Tar Spring Ridge (3512024), Taylor Canyon (3511918), Tierra Redonda Mountain (3512078), Wilson Corner (3512044) | |
Threat List Data from the CNDDB
| Threat List Total: | 13 | |
| EOs with Threat Listed: | Total EOs | % of EOs |
| 66 | 60 % | |
| Grazing | 34 | 30% |
| Non-native plant impacts | 16 | 14% |
| Improper burning regime | 15 | 13% |
| Other | 12 | 10% |
| Development | 10 | 9% |
| Road/trail construction/maint. | 9 | 8% |
| Erosion/runoff | 3 | 2% |
| Mining | 2 | 1% |
| Vandalism/dumping/litter | 1 | 0% |
| Feral pigs | 1 | 0% |
| Foot traffic/trampling | 1 | 0% |
| Recreational use (non-ORV) | 1 | 0% |
| Insufficient population/stand size | 1 | 0% |
Notes
| Threatened by grazing and development. Potentially threatened by road construction and mainetenance. Possibly threatened by recreational activities, vehicles, and non-native plants. Apparently intergrades with C. venustus. See Leaflets of Western Botany 4:4 (1944) for original description. |
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Threats: |
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Taxonomy: |
Citation
California Native Plant Society, Rare Plant Program. 2025. Rare Plant Inventory (online edition, v9.5.1). Website https://www.rareplants.cnps.org [accessed 5 February 2025].