Taxon Details
Isocoma arguta
Carquinez goldenbush
View Report Copy Link Calflora eFlora CCH CalPhotos iNaturalist
© 2010 Doug Wirtz |
© 2010 Doug Wirtz |
© 2010 Doug Wirtz |
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 |
||
|
Common Name: Carquinez goldenbush |
||
| Family: | Asteraceae | |
| Element Code: | PDAST57050 | |
| USDA Plants Symbol: | ISAR2 | |
|
Synonyms/Other Names: |
||
| Name Status: |
JEF, FNA, POWO, IPNI, Tropicos |
|
| CA Rare Plant Rank: | 1B.1 |
| Fed List: | None |
| State List: | None |
| Global Rank: | G1 |
|
State Rank: |
S1 |
| Other Status: | SB_UCBG |
|
CRPR Changes: |
|
| Add Date: | 1994-01-01 |
| Date Edited: | 2025-09-09 |
| Lifeform: perennial shrub | ||||||||||||||
Blooming Period: Aug-Dec
|
||||||||||||||
|
Elevation:
1 - 20 meters 5 - 65 feet |
||||||||||||||
General Habitats:
|
||||||||||||||
| Microhabitat Details: | ||||||||||||||
|
Microhabitat:
|
||||||||||||||
|
Notes: |
|
|
Threats: Threatened by grazing and trampling at Jepson Prairie Preserve. Threatened by development and agriculture elsewhere. |
|
|
Taxonomy: 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. |
|
| Threat List Total: | 7 | |
| Total EOs | % of EOs | |
| EOs with Threat Listed: | 8 | 57 % |
| THREAT LIST: | ||
|---|---|---|
| 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: | |||||
|---|---|---|---|---|---|
| A | B | C | D | X | U |
| 0 | 4 | 3 | 0 | 0 | 7 |
| Occurrence Status: | |||||
|---|---|---|---|---|---|
| Historical >20 Years | 7 | ||||
| Recent <=20 Years | 7 | ||||
| Presence: | |||||
|---|---|---|---|---|---|
| Presumed Extant | 14 | ||||
| Possibly Extirpated | 0 | ||||
| Presumed Extirpated | 0 | ||||
| California Endemic: | |||||||||||||
| California Island: | |||||||||||||
|
States: Name (Code) California (CA) |
|||||||||||||
|
California Counties and Islands: Name (Code) Contra Costa (CCA), Solano (SOL) |
|||||||||||||
|
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) |
|||||||||||||
Notes:
|
|||||||||||||
Presumed Extant
Click on quad for name. Hold Shift Key to use mouse scroll wheel