Species Details
Polygonum marinense
Marin knotweed
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Scientific Name: Polygonum marinense Mertens & Raven |
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Common Name: Marin knotweed |
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| Family: | Polygonaceae | |
| Element Code: | PDPGN0L1C0 | |
| USDA Plants Symbol: | POMA15 | |
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Synonyms/Other Names: |
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| CA Rare Plant Rank: | 3.1 |
| Fed List: | None |
| State List: | None |
| Global Rank: | G2Q |
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State Rank: |
S2 |
| Other Status: | |
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CRPR Changes: changed from 3.1 to 3.1 on 2008-07-14 |
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| Add Date: | 1974-01-01 |
| Date Edited: | 2021-05-26 |
| Lifeform: annual herb | ||||||||||||||
Blooming Period: (Apr)May-Aug(Oct)
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Elevation:
0 - 10 meters 0 - 35 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: | 9 | |
| Total EOs | % of EOs | |
| EOs with Threat Listed: | 17 | 53 % |
| THREAT LIST: | ||
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| Grazing | 14 | 43% |
| Foot traffic/trampling | 9 | 28% |
| Altered flood/tidal/hydrologic regime | 2 | 6% |
| Development | 1 | 3% |
| Erosion/runoff | 1 | 3% |
| Non-native plant impacts | 1 | 3% |
| Other | 1 | 3% |
| Recreational use (non-ORV) | 1 | 3% |
| Vandalism/dumping/litter | 1 | 3% |
| Total Occurrences: | 32 | ||||
| Element Occurrence Ranks: | |||||
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| A | B | C | D | X | U |
| 2 | 13 | 9 | 0 | 0 | 8 |
| Occurrence Status: | |||||
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| Historical >20 Years | 27 | ||||
| Recent <=20 Years | 5 | ||||
| Presence: | |||||
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| Presumed Extant | 32 | ||||
| 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) Alameda (ALA), Contra Costa (CCA), Marin (MRN), Napa (NAP), San Francisco (SFO), Solano (SOL), Sonoma (SON) |
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Quads: Name (Quad Code) Benicia (3812212), Bodega Head (3812331), Cuttings Wharf (3812223), Drakes Bay (3812218), Hunters Point (3712263), Inverness (3812217), Oakland East (3712272), Oakland West (3712273), Petaluma Point (3812214), Petaluma River (3812225), San Leandro (3712262), San Rafael (3712285), Tomales (3812228) |
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Notes:
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Presumed Extant
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