Melica macra is a species of grass that can be found in Argentina, Brazil, and Uruguay.[1]
The species is bisexual with closed leaf-sheaths and have short rhizomes with culms that are 20- tall. It panicle is 10- long and is linear. Its rachis and branches are scabrous while the ligule is 0.2- long and is membranous. The glumes are lanceolate, papery and membranous on borders, with difference in size; Lower glume is 5.5- long by 2.5- wide while the upper one is 6.5- long by 2- wide.[2]
In Argentina, it is found in such provinces as Buenos Aires, Catamarca, Corrientes, Entre Rios, Formosa, La Pampa, Misiones, Santiago del Estero, Tucumán, San Luis, and Santa Fe.[1]