Pycnanthemum virginianum (L.) T.Durand & B.D.Jacks. ex B.L.Rob. & Fernald
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Cite taxon page as 'WFO (2020): Pycnanthemum virginianum (L.) T.Durand & B.D.Jacks. ex B.L.Rob. & Fernald. Published on the Internet;http://www.worldfloraonline.org/taxon/wfo-0000289039. Accessed on: 10 Jul 2020'