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close up image of a blooming flower stalk of Ambrosia artemisiifolia elatior COMMON RAGWEED at the James Woodworth Prairie Preserve
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close up image of foliage and stems of Ambrosia artemisiifolia elatior COMMON RAGWEED at the James Woodworth Prairie Preserve
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close up image of a flower head, just prior to bloom, of Ambrosia artemisiifolia elatior COMMON RAGWEED at the James Woodworth Prairie Preserve
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close up image of a different kind of flower of Ambrosia artemisiifolia elatior COMMON RAGWEED at the James Woodworth Prairie Preserve - the species produces both male and female flowers
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close up image of the flowers of Ambrosia artemisiifolia elatior COMMON RAGWEED at the James Woodworth Prairie Preserve - the flower's green petals form a cuplike structure
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field image of Ambrosia artemisiifolia elatior COMMON RAGWEED at the James Woodworth Prairie Preserve
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Rotterdam, South Holland, Netherlands
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Rotterdam, South Holland, Netherlands
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Rotterdam, South Holland, Netherlands
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Plants in population apparently were unisexual. Pistillate inflorescence.
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Plants in population apparently were unisexual. Pistillate plant.
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Plants in population apparently were unisexual. Staminate plant.
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Plants in population apparently were unisexual. Staminate inflorescence.
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Radnor Lake State Natural Area, Nashville, Davidson County, Tennessee, US
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Radnor Lake State Natural Area, Nashville, Davidson County, Tennessee, US
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Hobro, Jylland, Danmark