. . . . . . . . . "Marrubium vulgare" . . "Phalaris aquatica" . . "Charlie Hohn. 2009. Marrubium vulgare associated species with names lookup Phalaris aquatica. iNaturalist.org. Accessed at <https://www.inaturalist.org/observations/2401919> on 05 Apr 2018." . . . . "http://iNaturalist.org is a place where you can record what you see in nature, meet other nature lovers, and learn about the natural world." .