Taxon Report

Deinandra bacigalupii B.G. Baldwin

Livermore tarplant

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Taxon Summary

Deinandra bacigalupii, commonly known as Livermore tarplant, is a annual herb in the Asteraceae that is found only in California. It occurs within Meadows and seeps, growing at elevations from 150 to 185 meters. Deinandra bacigalupii is ranked 1B.1, Plants Rare, Threatened or Endangered in California and Elsewhere; Seriously threatened in California.


  Classification

Scientific Name:
Deinandra bacigalupii B.G. Baldwin
Common Name:
Livermore tarplant
Family: Asteraceae
Element Code: PDAST4R0V0
USDA Plants Symbol: DEBA10
Synonyms/Other Names:

Conservation Status

CA Rare Plant Rank: 1B.1
Global Rank: G1
State Rank:
S1
State List: CE
Fed List: None
Other Status: SB_UCBG
CRPR Changes:
  • changed from 1B.2 to 1B.1 on 2016-06-09

Occurrence Data from the CNDDB

Total Occurrences: 4
Element Occurrence Ranks:
   Excellent (A) 0
   Good (B) 2
   Fair (C) 0
   Poor (D) 1
   None (X) 0
   Unknown (U) 1
California Endemic:  True
California Counties and Islands: Name (Code)
Alameda (ALA)
Quads: Name (Quad Code)
Altamont (3712166)

Threat List Data from the CNDDB

Threat List Total: 10
EOs with Threat Listed: Total EOs % of EOs
4 100 %
Development 4 100%
Disking 1 25%
Foot traffic/trampling 1 25%
Grazing 1 25%
Non-native plant impacts 1 25%
ORV activity 1 25%
Other 1 25%
Vandalism/dumping/litter 1 25%
Agriculture 1 25%
Biocides 1 25%

Notes

Threatened by urbanization and development. Not in TJM (1993). See MadroƱo 46(1):55 (1999) for original description.
Threats:
Taxonomy:
Citation California Native Plant Society, Rare Plant Program. 2025. Rare Plant Inventory (online edition, v9.5.1). Website https://www.rareplants.cnps.org [accessed 3 February 2025].