Annual or perennial grasses, culms 20-300 cm
high, woody or herbaceous. Leaves linear or oblong-linear, ligule fringed membrane. Inflorescence a solitary,
slender, fragile raceme, spatheate, rachis internodes and pedicels filiform to
clavate. Spikelets paired, secund, lanceolate or linear, compressed
dorsiventrally, falling with glumes; glumes 2, more or less equal, awned or
awnless; lower glume 2-keeled, 3-13 nerved; upper glume 1-3 nerved; lemmas
stipitiform, hyaline, 2-lobed, 1-awned, geniculate, 1-3 nerved; paleas present
or absent. Lodicules 2, fleshy. Stamens 2-3. Caryopsis dorsiventrally compressed.