Hemizonia pungens ssp. laevis Calflora

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Taxon Report

Hemizonia pungens (Hook. & Arn.) Torr. & A. Gray ssp. laevis D. D. Keck

(not an active name)

Common tarweed, Smooth tarplant, Spikeweed

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

also called Centromadia pungens ssp. laevis


	Plant Range Observation Search ~300 records in California Plant Characteristics

Bloom Period

Photos on Calflora


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

Wetlands:
Arid West: Equally likely to occur in wetlands and non wetlands
Mountains, Valleys and Coast: Occurs in non wetlands

Habitat: riparian, meadows, playas

Communities: Shadscale Scrub, Alkali Sink, Valley Grassland

Name Status:

Alternate Names:


JEF + CNPS + PLANTS	Centromadia pungens ssp. laevis

Information about Hemizonia pungens ssp. laevis from other sources


Nursery availability from CNPLX Commercial availability unknown. USDA PLANTS Profile (CEPUL) 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 Consortium of California Herbaria 2 Search the Native American Ethnobotany Database	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. [web application]. 2025. The Calflora Database [a non-profit organization]. Available: https://www.calflora.org/ (Accessed: 04/16/2025).