Taxon Details
Rorippa subumbellata
Tahoe yellow cress
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Taxon Summary:
Rorippa subumbellata, commonly known as Tahoe yellow cress, is a perennial rhizomatous herb in the Brassicaceae that is found in California and elsewhere. It occurs within Lower montane coniferous forest, and Meadows and seeps, growing at elevations from 1890 to 1905 meters. Rorippa subumbellata is ranked 1B.1, Plants Rare, Threatened or Endangered in California and Elsewhere; Seriously threatened in California.|
Scientific Name: Rorippa subumbellata Roll. |
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Common Name: Tahoe yellow cress |
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| Family: | Brassicaceae | |
| Element Code: | PDBRA270M0 | |
| USDA Plants Symbol: | ROSU2 | |
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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: | None |
| State List: | CE (1982-04-01) |
| Global Rank: | G1 |
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State Rank: |
S1 |
| Other Status: | SB_BerrySB; SB_CalBG/RSABG; USFS_S |
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CRPR Changes: |
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| Add Date: | 1974-01-01 |
| Date Edited: | 2022-06-08 |
| Lifeform: perennial rhizomatous herb | ||||||||||||||
Blooming Period: May-Sep
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Elevation:
1890 - 1905 meters 6200 - 6250 feet |
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General Habitats:
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| Microhabitat Details: decomposed granitic beaches | ||||||||||||||
Microhabitat:
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Notes: Known in CA only from Lake Tahoe; many historical occurrences extirpated. Seriously threatened by development, recreation, foot traffic, and inundation; recovery work underway. State-listed as Critically Endangered in NV. Previously a candidate for federal listing. See Contributions from the Dudley Herbarium 3:177 (1941) for original description. |
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Threats: |
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Taxonomy: |
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| Threat List Total: | 11 | |
| Total EOs | % of EOs | |
| EOs with Threat Listed: | 20 | 61 % |
| THREAT LIST: | ||
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| Recreational use (non-ORV) | 17 | 51% |
| Foot traffic/trampling | 12 | 36% |
| Altered flood/tidal/hydrologic regime | 8 | 24% |
| Development | 6 | 18% |
| Erosion/runoff | 4 | 12% |
| Other | 3 | 9% |
| Vandalism/dumping/litter | 2 | 6% |
| Grazing | 2 | 6% |
| Non-native plant impacts | 2 | 6% |
| ORV activity | 1 | 3% |
| Waterway bank protection/maintenance | 1 | 3% |
| Total Occurrences: | 33 | ||||
| Element Occurrence Ranks: | |||||
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| A | B | C | D | X | U |
| 0 | 7 | 5 | 0 | 3 | 18 |
| Occurrence Status: | |||||
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| Historical >20 Years | 5 | ||||
| Recent <=20 Years | 28 | ||||
| Presence: | |||||
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| Presumed Extant | 30 | ||||
| Possibly Extirpated | 2 | ||||
| Presumed Extirpated | 1 | ||||
| California Endemic: | |||||||||||||
| California Island: | |||||||||||||
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States: Name (Code) California (CA), Nevada (NV) |
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California Counties and Islands: Name (Code) El Dorado (ELD), Nevada (NEV)*, Placer (PLA) |
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Quads: Name (Quad Code) Emerald Bay (3812081), Homewood (3912012), Kings Beach (3912021)*, Meeks Bay (3912011), South Lake Tahoe (3811988), Tahoe City (3912022), Truckee (3912032)* |
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Notes:
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Presumed Extant
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