Dallis grassDal·lis grass
a tall, succulent, forage grass (Paspalum dilatatum), with hairy spikelets, much grown in the S U.S.
also Dallas grass
Origin of Dallis grass; from uncertain or unknown; perhaps
A South American perennial grass (Paspalum dilatatum) having long seedheads, grown for pasturage in the southern United States and often occurring as a weed in lawns.
Origin of Dallis grassAfter A.T. Dallis, 19th-century American farmer who promoted its use as pasturage.