Taxon Details
Sidalcea oregana ssp. valida
Kenwood Marsh checkerbloom
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Taxon Summary:
Sidalcea oregana ssp. valida, commonly known as Kenwood Marsh checkerbloom, is a perennial rhizomatous herb in the Malvaceae that is found only in California. It occurs within Marshes and swamps, growing at elevations from 115 to 150 meters. Sidalcea oregana ssp. valida is ranked 1B.1, Plants Rare, Threatened or Endangered in California and Elsewhere; Seriously threatened in California.|
Scientific Name: Sidalcea oregana (Nutt.) Gray ssp. valida (Greene) C.L. Hitchc. |
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Common Name: Kenwood Marsh checkerbloom |
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| Family: | Malvaceae | |
| Element Code: | PDMAL110K5 | |
| USDA Plants Symbol: | SIORV | |
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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: | FE (1997-10-22) |
| State List: | CE (1982-01-01) |
| Global Rank: | G5T1 |
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State Rank: |
S1 |
| Other Status: | SB_CalBG/RSABG; SB_UCBG |
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CRPR Changes: |
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| Add Date: | 1974-01-01 |
| Date Edited: | 2021-05-26 |
| Lifeform: perennial rhizomatous herb | ||||||||||||||
Blooming Period: Jun-Sep
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Elevation:
115 - 150 meters 375 - 490 feet |
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General Habitats:
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| Microhabitat Details: | ||||||||||||||
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Microhabitat:
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Notes: Known from only two occurrences. Threatened by grazing and hydrological alteration, and possibly by competition with native and non-native plants. See Pittonia 3:157-158 (1897) for original description, and University of Washington Publications in Biology 18:56-58 (1957) for revised nomenclature. |
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Threats: |
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Taxonomy: |
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| Threat List Total: | 6 | |
| Total EOs | % of EOs | |
| EOs with Threat Listed: | 2 | 100 % |
| THREAT LIST: | ||
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| Grazing | 2 | 100% |
| Non-native plant impacts | 2 | 100% |
| Other | 2 | 100% |
| Surface water diversion | 1 | 50% |
| Agriculture | 1 | 50% |
| Foot traffic/trampling | 1 | 50% |
| Total Occurrences: | 2 | ||||
| Element Occurrence Ranks: | |||||
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| A | B | C | D | X | U |
| 0 | 0 | 2 | 0 | 0 | 0 |
| Occurrence Status: | |||||
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| Historical >20 Years | 1 | ||||
| Recent <=20 Years | 1 | ||||
| Presence: | |||||
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| Presumed Extant | 2 | ||||
| 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) Sonoma (SON) |
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Quads: Name (Quad Code) Kenwood (3812245), Mount St. Helena (3812266) |
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Notes:
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Presumed Extant
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