||Wet, sunny, near streams and lakes, ditches, marshes
||Fragrant rosy red and white flowers 1/4″ wide form several flat clusters 2-4″ wide. Individual flowers have 5 downward curving petals and 5 upward petals resembling a crown.
||Leaves are smooth, narrow, and opposite in pairs.
||Stems are stout and smooth. They produce a milky sap when broken. Fruit is in narrow pods 2-4″ long which open to one side and release 10-20 disk-shaped brown seeds, each with a white tuft.