Tripsacum
noun
Trip·sa·cum
ˈtripsə̇kəm
: a genus of coarse perennial grasses of the southern U.S. and South America having androgynous spikes with the 2-flowered staminate spikelets above and the pistillate below with the latter embedded in the joints of the rachis see gama
Word History
Etymology
New Latin, from Greek tripsis rubbing, friction, resistance to rubbing; akin to Greek tribein to rub