Reference:Woodland1982a
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Verbatim text: Woodland, D. W. 1982. Biosystematics of the perennial North American taxa of Urtica. II. Taxonomy. Syst. Bot. 7: 282-290.
Author: Woodland, D.W.
Year: 1982
Title: Biosystematics of the perennial North American taxa of Urtica. II. Taxonomy
Journal: Syst. Bot
Volume: 7
Pages: 282–290