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Ambrosia acanthicarpa Hook.

Flatspine bur ragweed

62 55 Observations

Asteraceae

Ambrosia artemisiifolia L.

Annual ragweed

4,709 3,716 Observations

Asteraceae

Ambrosia psilostachya DC.

Cuman ragweed

358 267 Observations

Asteraceae

Ambrosia trifida L.

Giant Ragweed

949 778 Observations

Asteraceae

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