Definitions for "Alisma plantago-aquatica"
marsh plant having clusters of small white or pinkish flowers and broad pointed or rounded leaves
The Common Water-plantain (Alisma plantago-aquatica), also known as Mad-dog weed, is a flowering plant native to most of the Northern Hemisphere, in Europe, northern Asia, and North America. It grows in shallow water, and consists of a fibrous root, several basal leaves 15-30 cm long, and a triangular stem up to 1 m tall, with a branched inflorescence bearing numerous small flowers with three round or slightly jagged, white or pale purple, petals.