Calflora
Taxon  Report   9509 
Laennecia coulteri  (A. Gray) G.L. Nesom
Coulter's horseweed
Laennecia coulteri
© 2011 Neal Kramer
Click on a photo to see it bigger.
CalPhotos
Laennecia coulteri
© 2012 Lynn Robertson
Laennecia coulteri
© 2015 Richard Spellenberg
Laennecia coulteri, 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)



point, line, or polygon

Plant Characteristics
and Associations



Bloom Period
Laennecia coulteri
© 2006 Adonis (Don) Tate
Family: ASTERACEAE  
Genus: Laennecia
Communities:
Valley Grassland, Foothill Woodland, Coastal Sage Scrub, Creosote Bush Scrub, wetland-riparian
Wetlands: Equally likely to occur in wetlands and non wetlands
Distribution by County 

Add an Observation of  Laennecia coulteri

Name Status:
Accepted by TJM2 + PLANTS
Alternate Names:
(according to)

PLANTS: Conyza coulteri var. virgata
PLANTS: Eschenbachia coulteri
TJM2 + PLANTS: Conyza coulteri
More information about  Laennecia coulteri
Nursery / seed vendor availability from CNPLX
Commercial availability unknown.
Landscaping information from Calscape
Photos on CalPhotos / Google Images
Jepson eFlora

Records from the Consortium of California Herbaria

USDA PLANTS Profile (LACO13)

Search efloras.org (Flora of North America)

Search the Lady Bird Johnson Wildflower Center

website references from Google


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]. 2017. Berkeley, California: The Calflora Database [a non-profit organization].
Available: http://www.calflora.org/   (Accessed: Dec 15, 2017).

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