© 2015 Neal Kramer |
Gerald and Buff Corsi © 2016 California Academy of Sciences |
© 2015 Neal Kramer |
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Scientific Name: Lasthenia burkei (Greene) Greene |
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Common Name: Burke's goldfields |
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| Family: | Asteraceae | |
| Element Code: | PDAST5L010 | |
| USDA Plants Symbol: | LABU | |
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Synonyms/Other Names: |
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| CA Rare Plant Rank: | 1B.1 |
| Fed List: | FE (1991-12-02) |
| State List: | CE (1979-09-01) |
| Global Rank: | G1 |
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State Rank: |
S1 |
| Other Status: | SB_CalBG/RSABG; SB_UCBG |
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CRPR Changes: |
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| Add Date: | 1974-01-01 |
| Date Edited: | 2022-01-05 |
| Lifeform: annual herb | ||||||||||||||
Blooming Period: Apr-Jun
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Elevation:
15 - 600 meters 50 - 1970 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 agriculture, urbanization, development, grazing, road widening, road maintenance, and non-native plants. See Bulletin of the California Academy of Sciences 2(6):151 (1887) for original description, and American Journal of Botany 56(9):1042-1047 (1969) for information on origin and relationships. |
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Threats: |
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Taxonomy: |
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| Threat List Total: | 17 | |
| Total EOs | % of EOs | |
| EOs with Threat Listed: | 30 | 83 % |
| THREAT LIST: | ||
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| Development | 21 | 58% |
| Agriculture | 19 | 52% |
| Grazing | 16 | 44% |
| Non-native plant impacts | 10 | 27% |
| Disking | 6 | 16% |
| ORV activity | 5 | 13% |
| Foot traffic/trampling | 5 | 13% |
| Road/trail construction/maint. | 4 | 11% |
| Other | 4 | 11% |
| Surface water diversion | 2 | 5% |
| Vandalism/dumping/litter | 1 | 2% |
| Improper burning regime | 1 | 2% |
| Pollution | 1 | 2% |
| Recreational use (non-ORV) | 1 | 2% |
| Erosion/runoff | 1 | 2% |
| Altered flood/tidal/hydrologic regime | 1 | 2% |
| Degraded water quality | 1 | 2% |
| Total Occurrences: | 36 | ||||
| Element Occurrence Ranks: | |||||
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| A | B | C | D | X | U |
| 3 | 14 | 8 | 3 | 4 | 4 |
| Occurrence Status: | |||||
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| Historical >20 Years | 12 | ||||
| Recent <=20 Years | 24 | ||||
| Presence: | |||||
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| Presumed Extant | 32 | ||||
| Possibly Extirpated | 1 | ||||
| Presumed Extirpated | 3 | ||||
| California Endemic: | |||||||||||||
| California Island: | |||||||||||||
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States: Name (Code) California (CA) |
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California Counties and Islands: Name (Code) Lake (LAK), Mendocino (MEN), Napa (NAP), Sonoma (SON) |
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Quads: Name (Quad Code) Calistoga (3812255), Clearlake Highlands (3812286), Cotati (3812236), Healdsburg (3812257), Jimtown (3812267), Kelseyville (3812287), Lower Lake (3812285), Middletown (3812275), Santa Rosa (3812246), Sebastopol (3812247), Ukiah (3912322) |
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Notes:
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Presumed Extant
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