Cat-tails (Typha species)
Cat-tails are native to Florida and exist in many parts of the United States. They often grow in wetland areas and are known to be more predominant in canals and swamps that have an excessive amount of fertilizer and agricultural runoffs of nitrogen, phosphorous and other water pollutants caused by human activity. I remember seeing Cat-tails when I was a kid bicycling along Wantagh Parkway on Long Island. They get their name from their brown cylindrical flower spike which can be more than a foot long. I saw this stand of Cat-tails while walking along the Ten Mile Canal in Ft. Myers, Fla.