The Collaborative International Dictionary of English v.0.48:

Sparterie \Spar"ter*ie\, n. [F., from Sp. esparto esparto, L.
   spartum, Gr. ?.]
   Articles made of the blades or fiber of the Lygeum Spartum
   and Stipa tenacissima (syn. Macrochloa tenacissima),
   kinds of grass used in Spain and other countries for making
   ropes, mats, baskets, nets, and mattresses. --Loudon.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Matweed \Mat"weed`\, n. (Bot.)
   A name of several maritime grasses, as the sea sand-reed
   (Ammophila arundinacea) which is used in Holland to bind
   the sand of the seacoast dikes (see Beach grass, under
   Beach); also, the Lygeum Spartum, a Mediterranean grass
   of similar habit.
   [1913 Webster]