Eleocharis tuberculosa (Michx.) Roem. & Schult.

Eleocharis tuberculosa (Michx.) Roem. & Schult.. Eleocharis tuberculosa, the cone-cup spikerush or large-tubercled spikerush, is a plant species native to the United States and Canada. It has been reported from every state on the Gulf and Atlantic coasts from Maine to Texas, plus Kentucky, Tennessee, Arkansas and Nova Scotia. It is found in wet soil in meadows, woodlands, lake shores and river banks.