(Trichophorum cespitosum cespitosum)
Trichophorum cespitosum,commonly known as deergrass or tufted bulrush,is a species of flowering plant in the sedge family.It was originally described by Carl Linnaeus in 1753 as Scirpus cespitosus,but was changed to Trichophorum cespitosum by Carl Johan Hartman in 1849.