Taxon Details
Isocoma arguta
Carquinez goldenbush
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Taxon Summary:
Isocoma arguta, commonly known as Carquinez goldenbush, is a perennial shrub in the Asteraceae that is found only in California. It occurs within Valley and foothill grassland, growing at elevations from 1 to 20 meters. Isocoma arguta is ranked 1B.1, Plants Rare, Threatened or Endangered in California and Elsewhere; Seriously threatened in California.|
Scientific Name: Isocoma arguta Greene |
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Common Name: Carquinez goldenbush |
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| Family: | Asteraceae | |
| Element Code: | PDAST57050 | |
| USDA Plants Symbol: | ISAR2 | |
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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.1 |
| Fed List: | None |
| State List: | None |
| Global Rank: | G1 |
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State Rank: |
S1 |
| Other Status: | SB_UCBG |
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CRPR Changes: |
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| Add Date: | 1994-01-01 |
| Date Edited: | 2022-12-06 |
| Lifeform: perennial shrub | ||||||||||||||
Blooming Period: Aug-Dec
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Elevation:
1 - 20 meters 5 - 65 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 and trampling at Jepson Prairie Preserve. Treatened by development and agriculture elsewhere. See Manual of the Botany of the Region of San Francisco Bay, p. 175 (1894) by E. Greene for original description, and Phytologia 70(2):69-114 (1991) for taxonomic treatment. |
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Threats: |
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Taxonomy: |
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| Threat List Total: | 7 | |
| Total EOs | % of EOs | |
| EOs with Threat Listed: | 8 | 57 % |
| THREAT LIST: | ||
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| Grazing | 3 | 21% |
| Road/trail construction/maint. | 3 | 21% |
| Other | 1 | 7% |
| Recreational use (non-ORV) | 1 | 7% |
| Agriculture | 1 | 7% |
| Biocides | 1 | 7% |
| Development | 1 | 7% |
| Total Occurrences: | 14 | ||||
| Element Occurrence Ranks: | |||||
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| A | B | C | D | X | U |
| 0 | 4 | 3 | 0 | 0 | 7 |
| Occurrence Status: | |||||
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| Historical >20 Years | 7 | ||||
| Recent <=20 Years | 7 | ||||
| Presence: | |||||
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| Presumed Extant | 14 | ||||
| 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) Contra Costa (CCA), Solano (SOL) |
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Quads: Name (Quad Code) Benicia (3812212), Birds Landing (3812127), Briones Valley (3712282), Cordelia (3812222), Denverton (3812128), Dozier (3812137), Elmira (3812138), Mare Island (3812213), Vine Hill (3812211), Walnut Creek (3712281) |
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Notes:
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Presumed Extant
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