Species Details

Harmonia hallii

Hall's harmonia

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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

Conservation Status

CA Rare Plant Rank:	1B.2
Fed List:	None
State List:	None
Global Rank:	G2?
State Rank:	S2?
Other Status:	BLM_S; SB_CalBG/RSABG
CRPR Changes:
Add Date:	1984-01-01
Date Edited:	2022-03-01

Ecology and Life History

Lifeform: annual herb

Blooming Period: (Mar)Apr-Jun

Elevation:
305 - 975 meters
1000 - 3200 feet

General Habitats:

Chaparral (serpentinite)

Microhabitat Details:

Microhabitat:

Notes

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

Threat List Data from the CNDDB

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

Occurrence Data from the CNDDB

Element Occurrence Ranks:
Total Occurrences:					23
A	B	C	D	X	U
2	5	1	0	0	15

Occurrence Status:
Historical >20 Years	13
Recent <=20 Years	10

Presence:
Presumed Extant	23
Possibly Extirpated	0
Presumed Extirpated	0

Location

California Endemic:

California Island:

States: Name (Code)
California (CA)

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)

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.

Regional Map

Map

Presumed Extant

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Selected References

Original Description:	Madroño 3(1):5 (1935)
Revised Nomenclature:	Novon 9:462-471 (1999)
Species Account:	Harmonia hallii profile for potential Species of Conservation Concern evaluation (2018)
Other:	USFS Potential Species of Conservation Concern Profile