Taxon  Report   4065 
Hemizonia congesta  DC.
hayfield tarweed
Hemizonia congesta, a dicot, is an annual herb that is native to California and is also found outside of California, but is confined to western North America.
 

 Interactive Distribution Map 


 Observation Hotline 
 (observation details + photos)



 Distribution by County 


© 2007 Neal Kramer

© 2009 Neal Kramer
 Plant Characteristics
 and Associations



Bloom Period
Communities: Valley Grassland, Northern Coastal Scrub, Foothill Woodland, Southern Oak Woodland
Family: ASTERACEAE  
Genus: Hemizonia
Subspecies and Varieties:
Hemizonia congesta ssp. calyculata
Hemizonia congesta ssp. clevelandii
Hemizonia congesta ssp. congesta
Hemizonia congesta ssp. lutescens
Hemizonia congesta ssp. luzulifolia
Hemizonia congesta ssp. tracyi
Add an Observation of Hemizonia congesta
Name Status:
Accepted by TJM2 + PLANTS + JM93
 
 Information about  Hemizonia congesta  from other sources:
Photos on Picasa / Flickr / Google Images

website references on Google

USDA PLANTS Profile (HECO7)

Nursery availability and horticultural info on CNPLX

UC Integrated Pest Management Weed Photo Gallery
(profile of this plant as an agricultural weed)

2012 Jepson Manual Treament from the Jepson Herbarium,
University of California, Berkeley

Original Publication citation. on the International Plants Names Index

Search efloras.org (Flora of North America)

Search the Lady Bird Johnson Wildflower Center Native Plant Database

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 Calif. Herbaria.
[web application]. 2014. Berkeley, California: The Calflora Database [a non-profit organization].
Available: http://www.calflora.org/   (Accessed: Apr 20, 2014).

The information on this page comes from diverse sources. None of the links are sponsored.

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