Taxon Details
Horkelia bolanderi
Bolander's horkelia
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© 2012 Barry Rice |
© 2019 Steve Matson |
© 2019 Steve Matson |
Taxon Summary:
Horkelia bolanderi, commonly known as Bolander's horkelia, is a perennial herb in the Rosaceae that is found only in California. It occurs within Chaparral, Lower montane coniferous forest, Meadows and seeps, and Valley and foothill grassland, growing at elevations from 450 to 1100 meters. Horkelia bolanderi is ranked 1B.2, Plants Rare, Threatened or Endangered in California and Elsewhere; Moderately threatened in California.|
Scientific Name: Horkelia bolanderi Gray |
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Common Name: Bolander's horkelia |
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| Family: | Rosaceae | |
| Element Code: | PDROS0W011 | |
| USDA Plants Symbol: | HOBO2 | |
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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: | G1 |
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State Rank: |
S1 |
| Other Status: | BLM_S |
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CRPR Changes: |
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| Add Date: | 1988-01-01 |
| Date Edited: | 2025-06-03 |
| Lifeform: perennial herb | ||||||||||||||
Blooming Period: (May)Jun-Aug
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Elevation:
450 - 1100 meters 1475 - 3610 feet |
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General Habitats:
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| Microhabitat Details: | ||||||||||||||
Microhabitat:
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| Threat List Total: | 11 | |
| Total EOs | % of EOs | |
| EOs with Threat Listed: | 10 | 77 % |
| THREAT LIST: | ||
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| Non-native plant impacts | 4 | 30% |
| Road/trail construction/maint. | 4 | 30% |
| Agriculture | 2 | 15% |
| Altered flood/tidal/hydrologic regime | 2 | 15% |
| Dam/Inundation | 1 | 7% |
| Development | 1 | 7% |
| Erosion/runoff | 1 | 7% |
| Foot traffic/trampling | 1 | 7% |
| Improper burning regime | 1 | 7% |
| Surface water diversion | 1 | 7% |
| ORV activity | 1 | 7% |
| Total Occurrences: | 13 | ||||
| Element Occurrence Ranks: | |||||
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| A | B | C | D | X | U |
| 3 | 6 | 0 | 0 | 1 | 3 |
| Occurrence Status: | |||||
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| Historical >20 Years | 6 | ||||
| Recent <=20 Years | 7 | ||||
| Presence: | |||||
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| Presumed Extant | 12 | ||||
| Possibly Extirpated | 1 | ||||
| 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) Colusa (COL), Lake (LAK), Mendocino (MEN) |
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Quads: Name (Quad Code) Benmore Canyon (3912215), Clearlake Highlands (3812286), Highland Springs (3812288), Hough Springs (3912225), Kelseyville (3812287), Leesville (3912224), Manor Slough (3912223), Potato Hill (3912237), Purdys Gardens (3912311), Salt Canyon (3912213), Whispering Pines (3812276), Wilbur Springs (3912214) |
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Notes:
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Presumed Extant
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