spinifex

• ⇰ A genus of chiefly Australian grasses, the seeds of which bear an elastic spine. <spn>Spinifex hirsutus</spn> (black grass) and <spn>Spinifex longifolius</spn> are useful as sand binders. <spn>Spinifex paradoxus</spn>is a valuable perennial fodder plant.
• ⇰ Any of several Australian grasses of the genus <gen>Tricuspis</gen>, which often form dense, almost impassable growth, their leaves being stiff and sharp-pointed.