Eulalia Kunth, Revis. Gramin. 1: 160. 1829.
Annuals or perennials; culms at least at top, usually ribbed; blades not or gradually narrowed at base, linear, very gradually tapering to tip, margins revolute when dry. Inflorescence of 2 to several spike-like racemes, digitately arranged; rachis of racemes slender, long-hairy, many jointed, breaking up at maturity
the joints obliquely articulate. Spikelets in pairs, rarely in triads, oblong, dorsally compressed, usually awned, with bundle of hairs at base; one spikelet of each pair pedicelled, finally falling off entirely from the pedicel, the other spikelets usually sessile and falling off with adjacent internode, rarely shortly pedicelled and then falling from pedicel; glume herbaceous; lower glume as long as spikelet or somewhat shorter, margins inflexed and hyaline, narrowed, apex truncate or toothed, without midnerve, long-hairy towards base; upper glume as long as spikelet, boat-shaped, keeled, apex truncate or irregularly dentate, long-ciliate along margins; lower lemma hyaline or wanting; lower palea present or wanting, often apparently substituting for an absent lower lemma; upper lemma thinly membranous, entire, 2-toothed or 2-lobed, usually awned, the awn usually geniculate; upper palea small or wanting; lodicules 2, cuneate, small; stamens 3; styles 2, free, the stigmas protruding at or near apex. Caryopsis oblong, the hilum punctiform; embryo rather large.
About 30 species distributed in the tropical and subtropical of Africa and Asia.
Three species are found in Taiwan.