Species Details

Grindelia hallii

San Diego gumplant

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Photo of Grindelia hallii
© 2014 Keir Morse
Photo of Grindelia hallii
© 2014 Keir Morse
Photo of Grindelia hallii
© 2014 Keir Morse
Lifeform: perennial herb
Blooming Period: May-Oct
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Elevation:
185 - 1745 meters
605 - 5725 feet
General Habitats:
  • Chaparral
  • Lower montane coniferous forest
  • Meadows and seeps
  • Valley and foothill grassland
Microhabitat Details:
Microhabitat:
Notes:
Threatened by grazing, road maintenance, invasive species, and development. See Annals of the Missouri Botanical Garden 21:229 (1934) for original description, and Novon 2(3):215-217 (1992) for revised nomenclature.
Threats:
Taxonomy:
Threat List Total: 12
Total EOs % of EOs
EOs with Threat Listed: 26 39 %
THREAT LIST:
Road/trail construction/maint. 11 16%
Grazing 10 15%
ORV activity 8 12%
Non-native plant impacts 4 6%
Development 4 6%
Total Occurrences: 66
Element Occurrence Ranks:
A B C D X U
2 5 10 4 0 45
Occurrence Status:
Historical >20 Years 35
Recent <=20 Years 31
Presence:
Presumed Extant 66
Possibly Extirpated 0
Presumed Extirpated 0
California Endemic:
California Island:
States: Name (Code)
California (CA)
California Counties and Islands: Name (Code)
San Diego (SDG)
Quads: Name (Quad Code)
Cuyamaca Peak (3211685), Descanso (3211675), El Cajon (3211678), Imperial Beach (3211751), Jamul Mountains (3211668), Julian (3311615), La Mesa (3211771), Mesa Grande (3311627), Monument Peak (3211684), Mount Laguna (3211674), National City (3211761), Otay Mesa (3211658), Potrero (3211655), Poway (3211781), Ranchita (3311625), Santa Ysabel (3311616), Tecate (3211656)
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.
Presumed Extant
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