Taxon Details
Calochortus pulchellus
Mt. Diablo fairy-lantern
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Taxon Summary:
Calochortus pulchellus, commonly known as Mt. Diablo fairy-lantern, is a perennial bulbiferous herb in the Liliaceae that is found only in California. It occurs within Chaparral, Cismontane woodland, Riparian woodland, and Valley and foothill grassland, growing at elevations from 30 to 840 meters. Calochortus pulchellus is ranked 1B.2, Plants Rare, Threatened or Endangered in California and Elsewhere; Moderately threatened in California.|
Scientific Name: Calochortus pulchellus Benth. |
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Common Name: Mt. Diablo fairy-lantern |
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| Family: | Liliaceae | |
| Element Code: | PMLIL0D160 | |
| USDA Plants Symbol: | CAPU2 | |
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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: | G2 |
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State Rank: |
S2 |
| Other Status: | SB_CalBG/RSABG |
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CRPR Changes: |
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| Add Date: | 1974-01-01 |
| Date Edited: | 2022-12-06 |
| Lifeform: perennial bulbiferous herb | ||||||||||||||
Blooming Period: Apr-Jun
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Elevation:
30 - 840 meters 100 - 2755 feet |
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General Habitats:
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| Microhabitat Details: | ||||||||||||||
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Microhabitat:
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Notes: Threatened by grazing, urbanization, horticultural collection, and feral pigs. Potentially threatened by road maintenance. See Proceedings of the California Academy of Sciences III 2:118 (1901) for taxonomic treatment, and Journal of Ecology 75:977-995 (1987) for population biology. |
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Threats: |
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Taxonomy: |
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| Threat List Total: | 14 | |
| Total EOs | % of EOs | |
| EOs with Threat Listed: | 21 | 40 % |
| THREAT LIST: | ||
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| Road/trail construction/maint. | 10 | 19% |
| Foot traffic/trampling | 6 | 11% |
| Grazing | 6 | 11% |
| Non-native plant impacts | 4 | 7% |
| Erosion/runoff | 3 | 5% |
| Over-collecting/poaching | 3 | 5% |
| Recreational use (non-ORV) | 2 | 3% |
| Feral pigs | 2 | 3% |
| Other | 2 | 3% |
| Improper burning regime | 1 | 1% |
| Insufficient population/stand size | 1 | 1% |
| Vandalism/dumping/litter | 1 | 1% |
| Wood cutting or brush clearing | 1 | 1% |
| Development | 1 | 1% |
| Total Occurrences: | 52 | ||||
| Element Occurrence Ranks: | |||||
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| A | B | C | D | X | U |
| 2 | 17 | 5 | 2 | 0 | 26 |
| Occurrence Status: | |||||
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| Historical >20 Years | 29 | ||||
| Recent <=20 Years | 23 | ||||
| Presence: | |||||
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| Presumed Extant | 52 | ||||
| Possibly Extirpated | 0 | ||||
| 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) Alameda (ALA), Contra Costa (CCA) |
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Quads: Name (Quad Code) Antioch South (3712187), Benicia (3812212), Briones Valley (3712282), Byron Hot Springs (3712176), Clayton (3712188), Diablo (3712178), Las Trampas Ridge (3712271), Tassajara (3712177), Walnut Creek (3712281) |
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Notes:
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Presumed Extant
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