Taxon Report

Eriastrum brandegeeae H. Mason

Brandegee's eriastrum

Print Report



  Classification

Scientific Name:
Eriastrum brandegeeae H. Mason
Common Name:
Brandegee's eriastrum
Family: Polemoniaceae
Element Code: PDPLM030H0
USDA Plants Symbol: ERBR3
Synonyms/Other Names:

Ecology and Life History

Lifeform: annual herb
Blooming Period: Apr-Aug Apr-Aug
Elevation: 425-840 (1395-2755)
General Habitats: Chaparral, Cismontane woodland
Microhabitat: Sandy, Volcanic
Microhabitat Details:

Conservation Status

CA Rare Plant Rank: 1B.1
Global Rank: G1Q
State Rank:
S1
State List: None
Fed List: None
Other Status: BLM_S
CRPR Changes:
  • changed from 1B.2 to 1B.1 on 2012-08-23

Occurrence Data from the CNDDB

Total Occurrences: 6
Element Occurrence Ranks:
   Excellent (A) 1
   Good (B) 1
   Fair (C) 2
   Poor (D) 0
   None (X) 0
   Unknown (U) 2
California Endemic:  True
California Counties and Islands: Name (Code)
Lake (LAK)
Quads: Name (Quad Code)
Clearlake Highlands (3812286), Kelseyville (3812287), The Geysers (3812277)

Threat List Data from the CNDDB

Threat List Total: 5
EOs with Threat Listed: Total EOs % of EOs
4 67 %
Development 3 50%
Non-native plant impacts 1 16%
ORV activity 1 16%
Road/trail construction/maint. 1 16%
Vandalism/dumping/litter 1 16%

Notes

Most reliable occurrence is at and near type locality near Borax Lake, which may include the only true representatives of this taxon. Plants from COL, GLE, TEH, and southern SHA cos. may be attributable to E. brandegeeae, E. tracyi or undescribed taxa; needs study. Includes E. tracyi in TJM (1993); does not include E. tracyi here. See Madroño 8(3):88-89 (1945) for original description, and Madroño 55(1):82-87 (2008) for additional taxonomic information.
Threats:
Seriously threatened at its type locality by development. Also threatened by grazing, competition, recreational activities, vehicles, and road maintenance. 
Taxonomy:

Selected References

CRPR List Change on 2012-08-23
Citation California Native Plant Society, Rare Plant Program. 2025. Rare Plant Inventory (online edition, v9.5.1). Website https://www.rareplants.cnps.org [accessed 9 January 2025].