Known as:  Arrowgrass, Seaside Arrowgrass
Latin Name:  Triglochin family
Description: Grasslike leaves at the base of the flower stalk which may be up to 3 feet tall.  Leaves are fleshy and round with a semicircular indentation the length of the blade on one side.  The flowers are small, green and arranged densely along the upper part of the flower stalk giving a knobby appearance.  Fruits are 6-part, roundish pods, each segment containing one seed; pods cluster tightly along stalk.
Poisonous Parts:  Leaves.  Plant contains cyanogenic glycoside.
Symptoms: Causes vomiting, abdominal pain, cramps, and diarrh