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Taxon Report     2325 About Calflora  
 

© 2005 Luigi Rignanese (CalPhotos)

 

Conyza canadensis (L.) Cronq.
Conyza canadensis, a dicot, is an annual herb that is native to California and is also found elsewhere in North America and beyond [Lum/Walker].
Common names: Canada horseweed, Canadian Horseweed, horseweed
Communities: weed, species characteristic of disturbed places, wetland-riparian
Habitat: disturbed [Walker]
Wetlands:equally likely to occur in wetlands or non wetlands [U.S. Fish & Wildlife Service.]
Elevation: between 0 and 6562 feet Family: Asteraceae
Name Status:
Recognized as current in JM93 + ICPN + PLANTS
  
Related names:See a list of other species in the genus Conyza found in California.
This is a parent record. Observation data is an aggregate of data for subspecies and varieties:
  Conyza canadensis var. canadensis
  Conyza canadensis var. glabrata
Distribution in California based on available records:
A shaded county indicates that there are one or more records of this plant within the county.

Hover the mouse over the map to see county names. Click to view records from that county.
 

    For a distribution map based on other criteria (eg. more than one record within the county), see the County Distribution Analysis for this plant.

 

  There are specimens from this county in an herbarium.
  There are documented observations, vouchered or confirmed by an expert.
  There are reported observations.
  There are reported observations available indirectly (eg. in botanical literature).
Records by County: Click county name to view records (numbers are approximate).
Information about  Conyza canadensis  from other sources:
Photos on CalPhotos / Picasa / Flickr 1993 Jepson Manual Treament from the UC Jepson Herbaria
Photos or website references on Google Original Publication citation. on the International Plants Names Index
PLANTS profile from USDA PLANTS (code = COCA5) Search efloras.org (Flora of North America)
Nursery availability and horticultural info (what grows with this plant) on CNPLX

Citation:
Calflora: Information on California plants for education, research and conservation. [web application]. 2010. Berkeley, California: The Calflora Database [a non-profit organization].
Available: http://www.calflora.org/   (Accessed: Feb 09, 2010).

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

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