Hemizonia congesta ssp. congesta Calflora

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Taxon Report

Hemizonia congesta DC. ssp. congesta

Hayfield tarweed

2021 R.A. Chasey

2019 Talila Golan

2001 Doreen L. Smith

2021 R.A. Chasey

2011 Zoya Akulova

2015 John Doyen

2015 Vernon Smith

2021 R.A. Chasey

Hemizonia congesta ssp. congesta is an annual herb that is native to California, and endemic (limited) to California.

also called Hemizonia congesta ssp. lutescens

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


	Plant Range Observation Search (1940 records) Plant Characteristics one or more occurrences within a 7.5-minute quadrangle

Bloom Period

Photos on Calflora


Parent:	Hemizonia congesta
Genus:	Hemizonia
Family:	Asteraceae
Category:	angiosperm
PLANTS group:	Dicot
Jepson eFlora section: eudicot

Ultramafic affinity: 1.3 - weak indicator / indifferent

Communities: Northern Coastal Scrub, Valley Grassland

Name Status:
Accepted by JEF + CNPS + PLANTS

Alternate Names:


JEF + CNPS	Hemizonia congesta ssp. leucocephala
JEF	Hemizonia congesta ssp. vernalis
CNPS	Hemizonia congesta
PLANTS	Hemizonia lutescens
PLANTS	Hemizonia luzulifolia var. lutescens
...

Information about Hemizonia congesta ssp. congesta from other sources


Nursery availability from CNPLX This plant is available commercially. Jepson eFlora USDA PLANTS Profile (HECOC2) Photos on Calflora Photos on CalPhotos Google Images Photos on iNaturalist ID Tips on PlantID.net	ITIS Original Publication citation 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	Add an Observation Location Suitability Planting Guide Distribution by County
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, including the Consortium of California Herbaria. [web application]. 2023. Berkeley, California: The Calflora Database [a non-profit organization]. Available: https://www.calflora.org/ (Accessed: 02/04/2023).