“…Of prime importance, among wild plants exploited by native North Americans in the Southwestern USA, are the graminoids of the genus Glyceria that was used in Eastern Europe in Roman times (Doebley, 1984;Pirożnikow & Szymański, 2005). From the Middle Ages to the nineteenth century Glyceria fluitans (known as floating sweet grass, floating manna grass, and water manna grass) played a special role in Poland, Germany, and Hungary, where it is known as Manna zwyczajna, Flutender Schwaden (Wasserschwaden), and réti harmutkása, respectively (Dénes, Papp, Babal, Czúcz, & Molnár, 2012;Drobnik, 2015;Hartwich & Håkanson, 1905;Łuczaj, Dumanowski, Köhler, & Mueller-Bieniek, 2012), Figure 1. The grain of wild G. fluitans has been highlighted as a speciality of Polish cuisine by travelers visiting the country (Łuczaj et al, 2012).…”