WEEDS
GENUS/SPECIES
Cyclachaena xanthiifolia
FAMILY
Asteraceae
SYNONYMS
Common: Giant Sumpweed
Botanical: Iva xanthifolia
DISTRIBUTION
Central, W, and NE US
- E Washington southward to NE California
- NE California southeastward to N Texas
- N Texas northeastward to central Illinois
- Central Illinois northwestward to E Washington
- New Jersey to Maine
Human Product Number - 44
Veterinary Product Number - 44
Comments
This species is a common plant along roadsides, cultivated fields, or along streams in much of the central part of the US. It may grow to be 6 feet tall. The species name refers to the shape of the larger leaves, which are rather triangular or fan-shaped, resembling those of the cocklebur. The undersides of the leaves are lighter in color than the upper surfaces. Young plants of burweed marsh elder may resemble sunflower plants at a similar stage of development (and often grow in similar habitats), and the rather inconspicuous greenish flowers of the mature marsh elder depend upon wind-pollination.