Taxon Details
Calochortus clavatus var. avius
Pleasant Valley mariposa-lily
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© 2023 Sierra Pacific Industries |
© 2023 Sierra Pacific Industries |
© 2023 Sierra Pacific Industries |
Taxon Summary:
Calochortus clavatus var. avius, commonly known as Pleasant Valley mariposa-lily, is a perennial bulbiferous herb in the Liliaceae that is found only in California. It occurs within Lower montane coniferous forest (Josephine silt loam, and volcanic), growing at elevations from 305 to 1800 meters. Calochortus clavatus var. avius is ranked 1B.2, Plants Rare, Threatened or Endangered in California and Elsewhere; Moderately threatened in California.|
Scientific Name: Calochortus clavatus Wats. var. avius Jeps. |
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Common Name: Pleasant Valley mariposa-lily |
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| Family: | Liliaceae | |
| Element Code: | PMLIL0D095 | |
| USDA Plants Symbol: | CACLA | |
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Synonyms/Other Names: |
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| Name Status: |
JEF, FNA, POWO, IPNI, Tropicos |
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| CA Rare Plant Rank: | 1B.2 |
| Fed List: | None |
| State List: | None |
| Global Rank: | G4T2 |
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State Rank: |
S2 |
| Other Status: | BLM_S; SB_SBBG; USFS_S |
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CRPR Changes: |
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| Add Date: | 1980-01-01 |
| Date Edited: | 2024-11-05 |
| Lifeform: perennial bulbiferous herb | ||||||||||||||
Blooming Period: May-Jul
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Elevation:
305 - 1800 meters 1000 - 5905 feet |
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General Habitats:
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| Microhabitat Details: | ||||||||||||||
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Microhabitat:
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| Threat List Total: | 17 | |
| Total EOs | % of EOs | |
| EOs with Threat Listed: | 104 | 79 % |
| THREAT LIST: | ||
|---|---|---|
| Logging | 91 | 69% |
| Road/trail construction/maint. | 35 | 26% |
| Grazing | 30 | 22% |
| Erosion/runoff | 14 | 10% |
| ORV activity | 10 | 7% |
| Other | 10 | 7% |
| Biocides | 9 | 6% |
| Over-collecting/poaching | 6 | 4% |
| Wood cutting or brush clearing | 6 | 4% |
| Non-native plant impacts | 5 | 3% |
| Foot traffic/trampling | 5 | 3% |
| Improper burning regime | 5 | 3% |
| Development | 3 | 2% |
| Agriculture | 3 | 2% |
| Recreational use (non-ORV) | 2 | 1% |
| Mining | 2 | 1% |
| Vandalism/dumping/litter | 1 | 0% |
| Total Occurrences: | 131 | ||||
| Element Occurrence Ranks: | |||||
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| A | B | C | D | X | U |
| 7 | 37 | 19 | 6 | 1 | 61 |
| Occurrence Status: | |||||
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| Historical >20 Years | 65 | ||||
| Recent <=20 Years | 66 | ||||
| Presence: | |||||
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| Presumed Extant | 130 | ||||
| Possibly Extirpated | 1 | ||||
| Presumed Extirpated | 0 | ||||
| California Endemic: | |||||||||||||
| California Island: | |||||||||||||
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States: Name (Code) California (CA) |
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California Counties and Islands: Name (Code) Amador (AMA), Calaveras (CAL), El Dorado (ELD), Mariposa (MPA)*, Placer (PLA) |
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Quads: Name (Quad Code) Caldor (3812054), Camino (3812066), Devil Peak (3812085), Devils Nose (3812044), Dorrington (3812033), Garnet Hill (3812043), Illinois Hill (3712031)*, Kyburz (3812073), Omo Ranch (3812055), Peddler Hill (3812053), Pollock Pines (3812075), Riverton (3812074), Sly Park (3812065), Stump Spring, Calif. (3812064) |
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Notes:
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Presumed Extant
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