Photo: Iris pseudacorus 00.

Flowering plant. It's one of the irises that gives you orris root. And the latin name tells us that this one has been confused with Acorus. Savitaipale, Finland. Wild. 1996-06-01.

Iris pseudacorus L.
Engl.: paleyellow iris, yellow flag, yellow iris, daggers, dragon flower, flaggon, fleur de luce, fliggers, gladyne, Jacob's sword, levers, livers, meklin, myrtle flower, segg, shalder, sheggs, water flag, yellow water iris.
Deu.: Sumpf-Schwertlilie, Gelbblütige Sumpfiris, Wasserschwertlilie.
Suom.: keltakurjenmiekka, kurjenmiekka.
Sven.: gul svärdslilja, svärdslilja, svensk svärdslilja, vanlig svärdslilja.
Pre-Linnaean: Iris aquatica lutea