Taxon Report

Geraea viscida (Gray) Blake

sticky geraea

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Taxon Summary

Geraea viscida, commonly known as sticky geraea, is a perennial herb in the Asteraceae that is found in California and elsewhere. It occurs within Chaparral, growing at elevations from 450 to 1700 meters. Geraea viscida is ranked 2B.2, Plants Rare, Threatened, or Endangered in California, But More Common Elsewhere; Moderately threatened in California.

  Classification
Scientific Name:
 Geraea viscida (Gray) Blake
Common Name:
 sticky geraea
Family: Asteraceae
Element Code: PDAST42020
USDA Plants Symbol: GEVI
Synonyms/Other Names:

Ecology and Life History
Lifeform: perennial herb
Blooming Period: (Apr)May-Jun (Apr)May-Jun
Elevation: 450-1700 (1475-5580)
General Habitats: Chaparral
Microhabitat:
Microhabitat Details:

Conservation Status
CA Rare Plant Rank: 2B.2
Global Rank: G3
State Rank:
 S2
State List: None
Fed List: None
Other Status: SB_CalBG/RSABG
CRPR Changes:
  • changed from 2B.3 to 2B.2 on 2017-05-18
  • changed from 2.3 to 2B.3 on 2013-06-12

Occurrence Data from the CNDDB
Total Occurrences: 112
Element Occurrence Ranks:
   Excellent (A) 1
   Good (B) 12
   Fair (C) 5
   Poor (D) 0
   None (X) 0
   Unknown (U) 94

Location
California Endemic:  False
California Counties and Islands: Name (Code)
Imperial (IMP), San Diego (SDG)
Quads: Name (Quad Code)
Barrett Lake (3211666), Cameron Corners (3211664), Campo (3211654), Descanso (3211675), In-ko-pah Gorge (3211661), Jacumba (3211662), Live Oak Springs (3211663), Morena Reservoir (3211665), Mount Laguna (3211674), Potrero (3211655), Sombrero Peak (3211673), Tecate (3211656), Tierra Del Sol (3211653), Viejas Mountain (3211676)

Threat List Data from the CNDDB

Threat List Total: 9
EOs with Threat Listed: Total EOs % of EOs
36 32 %
Development 23 20%
ORV activity 11 9%
Foot traffic/trampling 9 8%
Non-native plant impacts 5 4%
Road/trail construction/maint. 5 4%
Other 2 1%
Recreational use (non-ORV) 2 1%
Grazing 2 1%
Improper burning regime 1 0%

Notes
Many occurrences threatened by solar energy development. Also threatened by other development, vehicles, road widening and maintenance, trampling, and non-native plants.
Threats:
Taxonomy:

Selected References

Citation California Native Plant Society, Rare Plant Program. 2025. Rare Plant Inventory (online edition, v9.5.1). Website https://www.rareplants.cnps.org [accessed 11 February 2025].