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2015 Richard Spellenberg   cc-by-nc-sa-3.0

Hemizonella (Tarweed) is a genus of annual herb in the family Asteraceae. They are native to The Contiguous United States, Canada, and Western North America.

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EOL has data for 8 attributes, including:

Known occurrences, collected specimens and observations of tarweed. View this species on GBIF