Taxon Details
Thelypodium stenopetalum
slender-petaled thelypodium
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Taxon Summary:
Thelypodium stenopetalum, commonly known as slender-petaled thelypodium, is a perennial herb in the Brassicaceae that is found only in California. It occurs within Meadows and seeps (mesic, and alkaline), growing at elevations from 1600 to 2500 meters. Thelypodium stenopetalum is ranked 1B.1, Plants Rare, Threatened or Endangered in California and Elsewhere; Seriously threatened in California.|
Scientific Name: Thelypodium stenopetalum Wats. |
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Common Name: slender-petaled thelypodium |
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| Family: | Brassicaceae | |
| Element Code: | PDBRA2N0F0 | |
| USDA Plants Symbol: | THST | |
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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 (1984-08-31) |
| State List: | CE (1982-02-01) |
| Global Rank: | G1 |
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State Rank: |
S1 |
| Other Status: | SB_CalBG/RSABG |
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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: May-Sep
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Elevation:
1600 - 2500 meters 5250 - 8205 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 approximately ten occurrences. Seriously threatened by foot traffic, grazing, hydrological alterations, mining, vehicles, and urbanization. Protected in part at Baldwin Lake ER (DFG). See Proceedings of the American Academy of Arts and Sciences 22:468 (1887) for original description, Contributions from the Gray Herbarium 204:114-115 (1973) for taxonomic treatment, and Fremontia 13(1):22-23 (1985) for species account. |
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Threats: |
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Taxonomy: |
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| Threat List Total: | 14 | |
| Total EOs | % of EOs | |
| EOs with Threat Listed: | 11 | 100 % |
| THREAT LIST: | ||
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| Development | 9 | 81% |
| Altered flood/tidal/hydrologic regime | 8 | 72% |
| ORV activity | 6 | 54% |
| Grazing | 5 | 45% |
| Non-native plant impacts | 5 | 45% |
| Wood cutting or brush clearing | 5 | 45% |
| Foot traffic/trampling | 4 | 36% |
| Other | 3 | 27% |
| Recreational use (non-ORV) | 2 | 18% |
| Road/trail construction/maint. | 2 | 18% |
| Vandalism/dumping/litter | 1 | 9% |
| Erosion/runoff | 1 | 9% |
| Mining | 1 | 9% |
| Non-native animal impacts | 1 | 9% |
| Total Occurrences: | 11 | ||||
| Element Occurrence Ranks: | |||||
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| A | B | C | D | X | U |
| 0 | 4 | 1 | 1 | 4 | 1 |
| Occurrence Status: | |||||
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| Historical >20 Years | 6 | ||||
| Recent <=20 Years | 5 | ||||
| Presence: | |||||
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| Presumed Extant | 7 | ||||
| Possibly Extirpated | 1 | ||||
| Presumed Extirpated | 3 | ||||
| California Endemic: | |||||||||||||
| California Island: | |||||||||||||
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States: Name (Code) California (CA) |
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California Counties and Islands: Name (Code) San Bernardino (SBD) |
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Quads: Name (Quad Code) Big Bear City (3411637), Big Bear Lake (3411628), Fawnskin (3411638), Moonridge (3411627) |
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Notes:
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Presumed Extant
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