Species Details
Cirsium crassicaule
slough thistle
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Species Description:
Cirsium crassicaule, commonly known as slough thistle, is a annual/perennial herb in the Asteraceae that is found only in California. It occurs within Chenopod scrub, Marshes and swamps (sloughs), and Riparian scrub, growing at elevations from 3 to 100 meters. Cirsium crassicaule is ranked 1B.1, Plants Rare, Threatened or Endangered in California and Elsewhere; Seriously threatened in California.|
Scientific Name: Cirsium crassicaule (Greene) Jeps. |
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Common Name: slough thistle |
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| Family: | Asteraceae | |
| Element Code: | PDAST2E0U0 | |
| USDA Plants Symbol: | CICR | |
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Synonyms/Other Names: |
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| Name Status: |
JEP, 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: | BLM_S |
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CRPR Changes: |
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| Add Date: | 1974-01-01 |
| Date Edited: | 2024-11-05 |
| Lifeform: annual/perennial herb | ||||||||||||||
Blooming Period: May-Aug
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Elevation:
3 - 100 meters 10 - 330 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: | 11 | |
| Total EOs | % of EOs | |
| EOs with Threat Listed: | 13 | 72 % |
| THREAT LIST: | ||
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| Agriculture | 7 | 38% |
| Grazing | 3 | 16% |
| Altered flood/tidal/hydrologic regime | 2 | 11% |
| Biocides | 1 | 5% |
| Dam/Inundation | 1 | 5% |
| Development | 1 | 5% |
| Improper burning regime | 1 | 5% |
| Non-native plant impacts | 1 | 5% |
| Road/trail construction/maint. | 1 | 5% |
| Surface water diversion | 1 | 5% |
| Waterway bank protection/maintenance | 1 | 5% |
| Total Occurrences: | 18 | ||||
| Element Occurrence Ranks: | |||||
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| A | B | C | D | X | U |
| 0 | 6 | 1 | 0 | 2 | 9 |
| Occurrence Status: | |||||
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| Historical >20 Years | 18 | ||||
| Recent <=20 Years | 0 | ||||
| Presence: | |||||
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| Presumed Extant | 16 | ||||
| Possibly Extirpated | 2 | ||||
| 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) Kern (KRN), Kings (KNG), San Joaquin (SJQ) |
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Quads: Name (Quad Code) Hacienda Ranch (3511975)?*, Lathrop (3712173), Lone Tree Well (3511976), Lost Hills NE (3511965), Lost Hills NW (3511966), Semitropic (3511955), Tupman (3511933), Vernalis (3712163), Wasco SW (3511954) |
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Notes:
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Presumed Extant
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