Taxon Report
Calochortus obispoensis LemmonSan Luis mariposa-lily |
|
Taxon Summary
Calochortus obispoensis, commonly known as San Luis mariposa-lily, is a perennial bulbiferous herb in the Liliaceae that is found only in California. It occurs within Chaparral, Cismontane woodland, Coastal scrub, and Valley and foothill grassland, growing at elevations from 50 to 730 meters. Calochortus obispoensis is ranked 1B.2, Plants Rare, Threatened or Endangered in California and Elsewhere; Moderately threatened in California.Classification
|
Scientific Name: |
Calochortus obispoensis Lemmon |
|
Common Name: |
San Luis mariposa-lily |
| Family: | Liliaceae |
| Element Code: | PMLIL0D110 |
| USDA Plants Symbol: | CAOB |
|
Synonyms/Other Names: |
|
Ecology and Life History
| Lifeform: | perennial bulbiferous herb |
| Blooming Period: May-Jul | May-Jul |
| Elevation: | 50-730 (165-2395) |
| General Habitats: | Chaparral, Cismontane woodland, Coastal scrub, Valley and foothill grassland |
| Microhabitat: | Serpentine (often) |
| Microhabitat Details: |
Conservation Status
| CA Rare Plant Rank: | 1B.2 |
| Global Rank: | G2 |
|
State Rank: |
S2 |
| State List: | None |
| Fed List: | None |
| Other Status: | BLM_S; SB_CalBG/RSABG; SB_SBBG; USFS_S |
|
CRPR Changes: |
|
Occurrence Data from the CNDDB
| Total Occurrences: | 46 |
| Element Occurrence Ranks: | |
| Excellent (A) | 4 |
| Good (B) | 20 |
| Fair (C) | 5 |
| Poor (D) | 0 |
| None (X) | 0 |
| Unknown (U) | 17 |
| California Endemic: True | |
| California Counties and Islands: Name (Code) | |
| San Luis Obispo (SLO) | |
| Quads: Name (Quad Code) | |
| Arroyo Grande NE (3512025), Atascadero (3512046), Lopez Mtn. (3512035), Morro Bay South (3512037), Pebblestone Shut-in (3512161), Pismo Beach (3512026), Port San Luis (3512027), San Luis Obispo (3512036) | |
Threat List Data from the CNDDB
| Threat List Total: | 14 | |
| EOs with Threat Listed: | Total EOs | % of EOs |
| 30 | 65 % | |
| Grazing | 13 | 28% |
| Foot traffic/trampling | 12 | 26% |
| Non-native plant impacts | 9 | 19% |
| Development | 8 | 17% |
| Feral pigs | 5 | 10% |
| Military operations | 5 | 10% |
| Other | 5 | 10% |
| Road/trail construction/maint. | 5 | 10% |
| Improper burning regime | 4 | 8% |
| Erosion/runoff | 3 | 6% |
| Recreational use (non-ORV) | 3 | 6% |
| Mining | 2 | 4% |
| ORV activity | 1 | 2% |
| Wood cutting or brush clearing | 1 | 2% |
Citation
California Native Plant Society, Rare Plant Program. 2025. Rare Plant Inventory (online edition, v9.5.1). Website https://www.rareplants.cnps.org [accessed 25 January 2025].