Browsing by Subject/Keyword: people, organizations and landmarks:
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Ambrosia trifida (Giant Ragweed), habit, fallSeptember 16 2007
Brown, Deborah J. G.
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Ambrosia trifida (Giant Ragweed), inflorescenceSeptember 5 2015
Brown, Deborah J. G.
Photographic image
Ambrosia trifida (Giant Ragweed), inflorescenceSeptember 5 2015
Brown, Deborah J. G.