Species Details
Horkelia tenuiloba
thin-lobed horkelia
View Report Copy Link CalFlora EFlora CCH CalPhotos iNaturalist
© 1994 Doreen L. Smith |
© 2002 Doreen L. Smith |
© 2010 Vernon Smith |
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Scientific Name: Horkelia tenuiloba (Torr.) Gray |
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Common Name: thin-lobed horkelia |
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| Family: | Rosaceae | |
| Element Code: | PDROS0W0E0 | |
| USDA Plants Symbol: | HOTE2 | |
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Synonyms/Other Names: |
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| CA Rare Plant Rank: | 1B.2 |
| Fed List: | None |
| State List: | None |
| Global Rank: | G2 |
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State Rank: |
S2 |
| Other Status: | BLM_S; SB_CalBG/RSABG |
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CRPR Changes: |
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| Add Date: | 1988-01-01 |
| Date Edited: | 2024-11-05 |
| Lifeform: perennial herb | ||||||||||||||
Blooming Period: May-Jul(Aug)
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Elevation:
50 - 500 meters 165 - 1640 feet |
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General Habitats:
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| Microhabitat Details: | ||||||||||||||
Microhabitat:
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Notes: Historical occurrences need field surveys. Threatened by development. Possibly threatened by foot traffic, trail maintenance, logging, and non-native plants. See Report of the Pacific Railroad Expedition 4(5):84 (1857) for original description, and Systematic Botany 18(1):137-144 (1993) for taxonomic treatment. |
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Threats: |
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Taxonomy: |
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| Threat List Total: | 9 | |
| Total EOs | % of EOs | |
| EOs with Threat Listed: | 12 | 44 % |
| THREAT LIST: | ||
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| Road/trail construction/maint. | 5 | 18% |
| Agriculture | 4 | 14% |
| Development | 4 | 14% |
| Foot traffic/trampling | 3 | 11% |
| Grazing | 1 | 3% |
| Non-native plant impacts | 1 | 3% |
| Recreational use (non-ORV) | 1 | 3% |
| Disking | 1 | 3% |
| Biocides | 1 | 3% |
| Total Occurrences: | 27 | ||||
| Element Occurrence Ranks: | |||||
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| A | B | C | D | X | U |
| 3 | 4 | 6 | 0 | 0 | 14 |
| Occurrence Status: | |||||
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| Historical >20 Years | 23 | ||||
| Recent <=20 Years | 4 | ||||
| Presence: | |||||
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| Presumed Extant | 27 | ||||
| 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) Marin (MRN), Mendocino (MEN), Sonoma (SON) |
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Quads: Name (Quad Code) Annapolis (3812363), Bolinas (3712286), Camp Meeker (3812248), Dos Rios (3912363), Duncans Mills (3812341), Geyserville (3812268), Gualala (3812375), San Rafael (3712285), Sebastopol (3812247), Sonoma (3812234), Willis Ridge (3912353) |
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Notes:
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Presumed Extant
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