Vascular Plants of Wisconsin

Ambrosia psilostachya DC.
perennial ragweed
type: herbaceous perennial

plant plant leaves female flowers male flowers
plant stems with rhizome leaves female flowers male flowers

Ambrosia psilostachya is somewhat similar to Ambrosia artemisiifolia (common ragweed), but can always be distinguished by the presence of rhizomes connecting stems beneath the ground. It is also more likely to be found in very dry, sandy and unproductive sites, whereas A. artemisiifolia is often most successful in disturbed soils of farm fields, roadsides, construction sites, etc.

wis mcap
known distribution based on vouchers


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