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Scientific Name: Cirsium rhothophilum Blake |
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Common Name: surf thistle |
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| Family: | Asteraceae | |
| Element Code: | PDAST2E2J0 | |
| USDA Plants Symbol: | CIRH | |
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Synonyms/Other Names: |
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| CA Rare Plant Rank: | 1B.2 |
| Fed List: | None |
| State List: | CT (1990-02-01) |
| Global Rank: | G1 |
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State Rank: |
S1 |
| Other Status: | BLM_S; SB_SBBG |
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CRPR Changes: |
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| Add Date: | 1974-01-01 |
| Date Edited: | 2021-05-26 |
| Lifeform: perennial herb | ||||||||||||||
Blooming Period: Apr-Jun
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Elevation:
3 - 60 meters 10 - 195 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: | 10 | |
| Total EOs | % of EOs | |
| EOs with Threat Listed: | 16 | 76 % |
| THREAT LIST: | ||
|---|---|---|
| Non-native plant impacts | 8 | 38% |
| ORV activity | 6 | 28% |
| Foot traffic/trampling | 4 | 19% |
| Other | 3 | 14% |
| Development | 2 | 9% |
| Feral pigs | 1 | 4% |
| Grazing | 1 | 4% |
| Insufficient population/stand size | 1 | 4% |
| Military operations | 1 | 4% |
| Mining | 1 | 4% |
| Total Occurrences: | 21 | ||||
| Element Occurrence Ranks: | |||||
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| A | B | C | D | X | U |
| 3 | 7 | 4 | 1 | 2 | 4 |
| Occurrence Status: | |||||
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| Historical >20 Years | 20 | ||||
| Recent <=20 Years | 1 | ||||
| Presence: | |||||
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| Presumed Extant | 19 | ||||
| Possibly Extirpated | 1 | ||||
| Presumed Extirpated | 1 | ||||
| California Endemic: | |||||||||||||
| California Island: | |||||||||||||
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States: Name (Code) California (CA) |
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California Counties and Islands: Name (Code) San Luis Obispo (SLO), Santa Barbara (SBA) |
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Quads: Name (Quad Code) Arroyo Grande NE (3512025), Casmalia (3412075), Oceano (3512015), Pismo Beach (3512026), Point Arguello (3412056), Point Conception (3412044), Point Sal (3412086), Surf (3412065) |
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Notes:
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Presumed Extant
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