Harmonia hallii Calflora

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Taxon Report

Harmonia hallii (D. D. Keck) B. G. Baldwin

Hall's harmonia

Harmonia hallii is an annual herb that is native to California, and endemic (limited) to California.

also called Madia hallii

California Rare Plant Rank: 1B.2 (rare, threatened, or endangered in CA and elsewhere).


	Plant Range Observation Search ~253 records in California Plant Characteristics one or more occurrences within a 7.5-minute quadrangle

Bloom Period

Photos on Calflora


Genus:	Harmonia
Family:	Asteraceae
Category:	angiosperm
PLANTS group:	Dicot
Jepson eFlora section: eudicot

Ultramafic affinity: 6 - strict endemic

Communities: Chaparral

Name Status:
Accepted by JEF + CNPS + PLANTS + POWO

Alternate Names:


JEF + CNPS + PLANTS	Madia hallii

Information about Harmonia hallii from other sources


Nursery availability from CNPLX Commercial availability unknown. Jepson eFlora USDA PLANTS Profile (HAHA11) Photos on Calflora Photos on CalPhotos Google Images Photos on iNaturalist ID Tips on PlantID.net	International Plants Names Index Search efloras.org (Flora of North America) Landscape information from Calscape BONAP Distribution Map CNPS Inventory: 1B.2 Consortium of California Herbaria 2 Search the Native American Ethnobotany Database	Add an Observation Location Suitability Planting Guide Distribution by County
[Wikipedia] Limited Range: Harmonia hallii is endemic to California, where it is known only from a small section of the North Coast Ranges. It has been reported only from Yolo, Lake, Colusa, and Napa Counties. (link added by Mary Ann Machi) photos / record / common / links

Suggested Citation

Calflora: Information on California plants for education, research and conservation, with data contributed by public and private institutions and individuals. [web application]. 2025. The Calflora Database [a non-profit organization]. Available: https://www.calflora.org/ (Accessed: 03/30/2025).