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Ambrosia Linnaeus. Ragweed.

Key to Ambrosia

A genus of about 43 species, herbs, cosmopolitan.

Ref: Cronquist (1980); McMillan & Prevost (2022); Strother (2006dd) In Flora of North America Editorial Committee (2006b). Show full citations.

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Hover over a shape, letter, icon, or arrow on the map to see what it means. Data for arrows not developed for genera and families which may have species only occurring outside the flora area.

image of plant© Richard & Teresa Ware | Ambrosia artemisiifolia CC-BY-NC, permission granted to NCBG | Original Image ⭷
image of plant© Aidan Campos | Ambrosia trifida var. texana source | Original Image ⭷
image of plant© Erik Danielson | Ambrosia artemisiifolia source | Original Image ⭷
image of plant© Aidan Campos | Ambrosia psilostachya source | Original Image ⭷
image of plant© Erik Danielson | Ambrosia artemisiifolia source | Original Image ⭷
image of plant© Gary P. Fleming | Ambrosia bidentata | Original Image ⭷
image of plant© Jay Horn | Ambrosia hispida source | Original Image ⭷
image of plant© Scott Ward | Ambrosia porcheri | Original Image ⭷
image of plant© Keith Bradley | Ambrosia porcheri | Original Image ⭷
image of plant© Jay Horn | Ambrosia hispida source | Original Image ⭷
image of plant© Richard & Teresa Ware | Ambrosia artemisiifolia CC-BY-NC, permission granted to NCBG | Original Image ⭷
image of plant© Gary P. Fleming | Ambrosia artemisiifolia | Original Image ⭷
image of plant© Aidan Campos | Ambrosia psilostachya source | Original Image ⭷
image of plant© Richard & Teresa Ware | Ambrosia bidentata CC-BY-NC, permission granted to NCBG | Original Image ⭷
image of plant© Aidan Campos | Ambrosia trifida var. texana source | Original Image ⭷