Ammannia (Redstem) is a genus of herb in the family Lythraceae. They are native to Puerto Rico, U.S. Virgin Islands, The Contiguous United States, and Canada. They have capsule fruit.
Definition: A depression caused by erosion by water or ice. Low-lying land bordered by higher ground; especially elongate, relatively large gently sloping depressions of the Earth's surface, commonly situated between two mountains or between ranges of hills or mountains, and often containing a stream with an outlet.
