Taxon Details
Ivesia webberi
Webber's ivesia
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© 2007 Steve Matson |
© 2007 Steve Matson |
© 2007 Steve Matson |
Taxon Summary:
Ivesia webberi, commonly known as Webber's ivesia, is a perennial herb in the Rosaceae that is found in California and elsewhere. It occurs within Great Basin scrub (volcanic ash), Lower montane coniferous forest, and Pinyon and juniper woodland, growing at elevations from 1000 to 2075 meters. Ivesia webberi is ranked 1B.1, Plants Rare, Threatened or Endangered in California and Elsewhere; Seriously threatened in California.|
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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| Name Status: |
JEF, FNA, POWO, IPNI, Tropicos |
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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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