Taxon Report

Harmonia hallii (Keck) B.G. Baldwin

Hall's harmonia

Print Report


© 2015 John Doyen

  Classification

Scientific Name:
Harmonia hallii (Keck) B.G. Baldwin
Common Name:
Hall's harmonia
Family: Asteraceae
Element Code: PDAST650A0
USDA Plants Symbol: HAHA11
Synonyms/Other Names:
  • Madia hallii Keck

Ecology and Life History

Lifeform: annual herb
Blooming Period: (Mar)Apr-Jun (Mar)Apr-Jun
Elevation: 305-975 (1000-3200)
General Habitats: Chaparral
Microhabitat:
Microhabitat Details:

Occurrence Data from the CNDDB

Total Occurrences: 23
Element Occurrence Ranks:
   Excellent (A) 2
   Good (B) 5
   Fair (C) 1
   Poor (D) 0
   None (X) 0
   Unknown (U) 15
California Endemic:  True
California Counties and Islands: Name (Code)
Colusa (COL), Lake (LAK), Napa (NAP), Yolo (YOL)
Quads: Name (Quad Code)
Aetna Springs (3812264), Benmore Canyon (3912215), Clearlake Highlands (3812286), Detert Reservoir (3812265), Hough Springs (3912225), Jericho Valley (3812274), Kelseyville (3812287), Knoxville (3812273), Leesville (3912224), Lower Lake (3812285), Middletown (3812275), The Geysers (3812277), Wilbur Springs (3912214), Wilson Valley (3812284)

Threat List Data from the CNDDB

Threat List Total: 4
EOs with Threat Listed: Total EOs % of EOs
9 39 %
Road/trail construction/maint. 5 21%
Development 4 17%
Grazing 1 4%
ORV activity 1 4%

Notes

Threats:
Threatened by mining.
Taxonomy:
A synonym of Madia hallii in The Jepson Manual.

Selected References

MadroƱo 3(1):5 (1935)
Novon 9:462-471 (1999)
Harmonia hallii profile for potential Species of Conservation Concern evaluation (2018)
USFS Potential Species of Conservation Concern Profile
Citation California Native Plant Society, Rare Plant Program. 2024. Rare Plant Inventory (online edition, v9.5.1). Website https://www.rareplants.cnps.org [accessed 25 December 2024].