Guiry, M.D. & Guiry, G.M. (2019). AlgaeBase. World-wide electronic publication, National University of Ireland, Galway (taxonomic information republished from AlgaeBase with permission of M.D. Guiry). Chara aspera var. lacustris H.Groves & J.Groves, 1880. Accessed through: World Register of Marine Species at: http://www.marinespecies.org/aphia.php?p=taxdetails&id=551183 on 2019-04-23
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