Scirpus ancistrochaetus

About

Scirpus ancistrochaetus is a rare species of flowering plant in the sedge family known by the common names barbedbristle bulrush and northeastern bulrush. It is native to the northeastern United States, from New Hampshire south to Virginia. It used to be found in Quebec but it is now thought to be extirpated there. It was also believed to be extirpated from the state of New York, but at least one population has been rediscovered in Steuben County in 2010. It is threatened by the loss and degradation of its wetland habitat. It is a federally listed endangered species.

Summary from Wikipedia