English: Sixweeks threeawn; Three-awns wiregrasses; Speargrasses; Needlegrasses.
Genus: ± 300.
Region: cosmopolitan, worldwide.
Botany: three awns on each lemma of each floret; habitat arid warm; stems ascending to erect; leaves basal and cauline, flat or inrolled, tufted; inflorescences panicle-like or raceme-like, spiky branches; glumes narrow lanceolate, without awns; lemmas hard, three-veined, with three, quite long awns near the tip.