Annuals or perennials. Leaves: lamina
linear or lanceolate; ligule a line of hairs. Inflorescence of racemes borne upon a short common axis; spikelets single
and abaxial or paired. Spikelets lanceolate to ovate, plano-convex, cuspidate to acuminate; lower glume
mostly shorter than spikelet; upper glume as long as spikelet, usually membranous; lower floret male or sterile, lower lemma resembling upper glume; upper lemma obtuse, mucronate. Derivation of name: from Greek: ouro meaning a tail; chloa meaning grass, possibly referring to the mucronate upper lemma Worldwide: 110 species in the Old World tropics Botswana: 4 taxa. |