Spikerush
There are over 200 species of spikerush found throughout the world with about 25 of them common to the eastern United States. Spikerushes are usually perennials although some annuals are found. Normally they grow in the mud along a pond or drainage canal bank, or in the shallow water regions of a pond or lake margin. Spikerushes are usually considered an emergent plant, but some species may spend their entire life completely submersed under clear shallow waters up to six feet deep.