Species Details

Horkelia bolanderi

Bolander's horkelia

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Photo of Horkelia bolanderi
© 2012 Barry Rice
Photo of Horkelia bolanderi
© 2019 Steve Matson
Photo of Horkelia bolanderi
© 2019 Steve Matson
Scientific Name:
Horkelia bolanderi Gray
Common Name:
Bolander's horkelia
Family: Rosaceae
Element Code: PDROS0W011
USDA Plants Symbol: HOBO2
Synonyms/Other Names:
Lifeform: perennial herb
Blooming Period: (May)Jun-Aug
Elevation:
450 - 1100 meters
1475 - 3610 feet
General Habitat:
  • Chaparral
  • Lower montane coniferous forest
  • Meadows and seeps
  • Valley and foothill grassland
General Micro Habitat:
Micro Habitat:
  • Edges
  • Vernally Mesic
Notes:
Threats:
Threatened by vehicles. Possibly threatened by development, road widening, hydrological alterations, and non-native plants.
Taxonomy:
Other:
Total Occurrences: 13
Element Occurrence Ranks:
A B C D X U
3 6 0 0 1 3
Occurrence Status:
Historical >20 Years 6
Recent <=20 Years 7
Presence:
Presumed Extant 12
Possibly Extirpated 1
Presumed Extirpated 0
California Endemic:
California Island:
States: Name (Code)
California (CA)
California Counties and Islands: Name (Code)
Colusa (COL), Lake (LAK), Mendocino (MEN)
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)
Notes:
Definitions of codes following a county and/or quad:
* Presumed extirpated
(?) Occurrence confirmed, but possibly extirpated
Quad and county data is imported from the CNDDB. Species may be present in other areas where conditions are favorable. These data should NOT be substituted for pre-project review or for on-site surveys.

Map

Presumed Extant
Counties   Quads
Taxonomic Treatment: Systematic Botany 18(1):137-144 (1993)
Species Account: Horkelia bolanderi profile for potential Species of Conservation Concern evaluation (2018)