EditorialWasserliesch, Butomus umbellatus L. - Wasserliesch, Umbelliferous Swan Flower, Water Vial, Family: 19th Butomaceae - Schwanenblumegew?chse, plate 37, after p. 84 (Vol. 1), 1886, Otto Wilhelm Thom?: Prof. Dr. Thom?'s Flora von Deutschland, ?sterreich un...