Species Details
Ivesia webberi
Webber's ivesia
View Report Copy Link CalFlora EFlora CCH CalPhotos iNaturalist
© 2007 Steve Matson |
© 2007 Steve Matson |
© 2007 Steve Matson |
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Scientific Name: Ivesia webberi Gray |
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Common Name: Webber's ivesia |
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| Family: | Rosaceae | |
| Element Code: | PDROS0X0Q0 | |
| USDA Plants Symbol: | IVWE | |
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Synonyms/Other Names: |
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| CA Rare Plant Rank: | 1B.1 |
| Fed List: | FT (2014-07-03) |
| State List: | None |
| Global Rank: | G2 |
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State Rank: |
S1 |
| Other Status: | SB_CalBG/RSABG; USFS_S |
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CRPR Changes: |
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| Add Date: | 1974-01-01 |
| Date Edited: | 2023-05-02 |
| Lifeform: perennial herb | ||||||||||||||
Blooming Period: May-Jul
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Elevation:
1000 - 2075 meters 3280 - 6810 feet |
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General Habitats:
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| Microhabitat Details: | ||||||||||||||
Microhabitat:
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Notes: Known in CA only from Sierra and Dog valleys. Threatened by vehicles, and potentially by development, grazing, alteration of fire regimes, and non-native plants. Threatened in NV. See Proceedings of the American Academy of Arts and Sciences 10:71 (1874) for original description. |
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Threats: |
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Taxonomy: |
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| Threat List Total: | 12 | |
| Total EOs | % of EOs | |
| EOs with Threat Listed: | 12 | 92 % |
| THREAT LIST: | ||
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| Non-native plant impacts | 7 | 53% |
| ORV activity | 7 | 53% |
| Grazing | 7 | 53% |
| Improper burning regime | 3 | 23% |
| Road/trail construction/maint. | 3 | 23% |
| Other | 3 | 23% |
| Development | 3 | 23% |
| Foot traffic/trampling | 2 | 15% |
| Agriculture | 1 | 7% |
| Dam/Inundation | 1 | 7% |
| Recreational use (non-ORV) | 1 | 7% |
| Logging | 1 | 7% |
| Total Occurrences: | 13 | ||||
| Element Occurrence Ranks: | |||||
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| A | B | C | D | X | U |
| 2 | 4 | 2 | 1 | 2 | 2 |
| Occurrence Status: | |||||
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| Historical >20 Years | 4 | ||||
| Recent <=20 Years | 9 | ||||
| Presence: | |||||
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| Presumed Extant | 11 | ||||
| Possibly Extirpated | 1 | ||||
| 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) Lassen (LAS), Plumas (PLU), Sierra (SIE) |
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Quads: Name (Quad Code) Chilcoot (3912072), Constantia (3912081), Crescent Mills (4012018), Dog Valley (3912051), Evans Canyon (3912061), Little Mud Flat (4012042), Meadow Valley (3912181), Quincy (3912088)*, Spring Garden (3912087), Taylorsville (4012017) |
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Notes:
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Presumed Extant
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