Taxon Details
Horkelia marinensis
Point Reyes horkelia
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© 2017 John Doyen |
© 2021 John Doyen |
© 2017 John Doyen |
Taxon Summary:
Horkelia marinensis, commonly known as Point Reyes horkelia, is a perennial herb in the Rosaceae that is found only in California. It occurs within Coastal dunes, Coastal prairie, and Coastal scrub, growing at elevations from 5 to 755 meters. Horkelia marinensis is ranked 1B.2, Plants Rare, Threatened or Endangered in California and Elsewhere; Moderately threatened in California.|
Scientific Name: Horkelia marinensis (Elmer) Crum |
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Common Name: Point Reyes horkelia |
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| Family: | Rosaceae | |
| Element Code: | PDROS0W0B0 | |
| USDA Plants Symbol: | HOMA3 | |
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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.2 |
| Fed List: | None |
| State List: | None |
| Global Rank: | G2 |
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State Rank: |
S2 |
| Other Status: | BLM_S; SB_CalBG/RSABG; SB_UCSC |
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CRPR Changes: |
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| Add Date: | 1974-01-01 |
| Date Edited: | 2024-11-05 |
| Lifeform: perennial herb | ||||||||||||||
Blooming Period: May-Sep
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Elevation:
5 - 755 meters 15 - 2475 feet |
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General Habitats:
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| Microhabitat Details: | ||||||||||||||
Microhabitat:
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Notes: Populations from near Ft. Bragg, MEN Co. may be varietally distinct. Historical occurrences need field surveys. See Systematic Botany 18(1):137-144 (1993) for distributional information. |
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Threats: Threatened by non-native plants and residential development. Possibly threatened by road maintenance and foot traffic. |
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Taxonomy: |
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| Threat List Total: | 10 | |
| Total EOs | % of EOs | |
| EOs with Threat Listed: | 17 | 47 % |
| THREAT LIST: | ||
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| Non-native plant impacts | 8 | 22% |
| Other | 7 | 19% |
| Grazing | 6 | 16% |
| Development | 4 | 11% |
| Altered flood/tidal/hydrologic regime | 3 | 8% |
| Foot traffic/trampling | 3 | 8% |
| Road/trail construction/maint. | 3 | 8% |
| Vandalism/dumping/litter | 2 | 5% |
| Recreational use (non-ORV) | 2 | 5% |
| Erosion/runoff | 2 | 5% |
| Total Occurrences: | 36 | ||||
| Element Occurrence Ranks: | |||||
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| A | B | C | D | X | U |
| 2 | 9 | 3 | 3 | 0 | 19 |
| Occurrence Status: | |||||
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| Historical >20 Years | 24 | ||||
| Recent <=20 Years | 12 | ||||
| Presence: | |||||
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| Presumed Extant | 36 | ||||
| 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), Monterey (MNT), San Mateo (SMT), Santa Cruz (SCR), Sonoma (SON) |
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Quads: Name (Quad Code) Ano Nuevo (3712213), Bodega Head (3812331), Davenport (3712212)?, Drakes Bay (3812218), Felton (3712211), Fort Bragg (3912347), Gualala (3812375), Hales Grove (3912377), Inglenook (3912357), Inverness (3812217), Marina (3612167), Montara Mountain (3712254), Noyo Hill (3912346), Point Bonita (3712275), San Francisco South (3712264), Santa Cruz (3612281), Tomales (3812228), Valley Ford (3812238), Westport (3912367) |
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Notes:
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Presumed Extant
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