Butomaceae are aquatic monocots that may be recognised by their long, three-angled leaves and axillary, scapose, umbellate, bracteate inflorescence. The flowers are perfect and there are clearly two distinct perianth whorls although both are petaloid; the fruit is a follicle. (APG II website, 6.5.2009)
Distribution maps
(online von http://www.mobot.org/MOBOT/research/APweb/ . Dort zitiert wie unter jedem Diagramm vermerkt):
Butomaceae
Butomus umbellatus. Temperate Eurasia, naturalised in N.E. North America (map: from Hultén & Fries 1986)
