Taxon Report
Calochortus weedii A.W. Wood var. intermedius Ownbeyintermediate mariposa-lily |
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Classification
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Scientific Name: |
Calochortus weedii A.W. Wood var. intermedius Ownbey |
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Common Name: |
intermediate mariposa-lily |
| Family: | Liliaceae |
| Element Code: | PMLIL0D1J1 |
| USDA Plants Symbol: | CAWEI |
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Synonyms/Other Names: |
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Ecology and Life History
| Lifeform: | perennial bulbiferous herb |
| Blooming Period: May-Jul | May-Jul |
| Elevation: | 105-855 (345-2805) |
| General Habitats: | Chaparral, Coastal scrub, Valley and foothill grassland |
| Microhabitat: | Rocky |
| Microhabitat Details: | calcareous |
Conservation Status
| CA Rare Plant Rank: | 1B.2 |
| Global Rank: | G3G4T3 |
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State Rank: |
S3 |
| State List: | None |
| Fed List: | None |
| Other Status: | SB_CalBG/RSABG; USFS_S |
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CRPR Changes: |
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Occurrence Data from the CNDDB
| Total Occurrences: | 199 |
| Element Occurrence Ranks: | |
| Excellent (A) | 8 |
| Good (B) | 25 |
| Fair (C) | 16 |
| Poor (D) | 5 |
| None (X) | 5 |
| Unknown (U) | 140 |
| California Endemic: True | |
| California Counties and Islands: Name (Code) | |
| Los Angeles (LAX), Orange (ORA), Riverside (RIV), San Bernardino (SBD) | |
| Quads: Name (Quad Code) | |
| Alberhill (3311764), Azusa (3411728), Black Star Canyon (3311776), Canada Gobernadora (3311755), Corona South (3311775), Cucamonga Peak (3411725), Dana Point (3311746), El Monte (3411811), El Toro (3311766), La Habra (3311788)*, Laguna Beach (3311757), Mt. Baldy (3411726), Murrieta (3311752), Orange (3311777), Prado Dam (3311786), San Clemente (3311745), San Dimas (3411717), San Juan Capistrano (3311756), Santiago Peak (3311765), Vail Lake (3311648), Whittier (3311881), Winchester (3311761), Yorba Linda (3311787) | |
Threat List Data from the CNDDB
| Threat List Total: | 12 | |
| EOs with Threat Listed: | Total EOs | % of EOs |
| 86 | 43 % | |
| Road/trail construction/maint. | 51 | 25% |
| Development | 42 | 21% |
| Other | 20 | 10% |
| Non-native plant impacts | 14 | 7% |
| Erosion/runoff | 11 | 5% |
| Wood cutting or brush clearing | 10 | 5% |
| Foot traffic/trampling | 8 | 4% |
| ORV activity | 6 | 3% |
| Improper burning regime | 4 | 2% |
| Landfill | 4 | 2% |
| Recreational use (non-ORV) | 3 | 1% |
| Grazing | 1 | 0% |
Notes
| Threatened by development, non-native plants, road construction, and fuel modification. Potentially threatened by frequent wildfires and horticultural collecting. Intergrades with var. weedii; hybridizes with C. plummerae. See Annals of the Missouri Botanical Garden 27(4):519 (1940) 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 January 2025].