Japan Flora: culms 30-60 cm. long; ligules 0.2-0.3 mm. long; panicles 15-30 cm. long, the branches solitary or geminate, appressed to the axis; spikelets 7-10 mm. long, 3- to 5-flowered; lower glume 0.5-1 mm., the upper 3 mm. long; lemmas with spKading long hairs on upper margins, the awn about 15 mm. long; anthers about 0.2 mm. long; caryopsis glabrous. May-June. Naturalized in grassy places in lowlands.

Honshu (Kinki Distr. and westw.), Shikoku, Kyushu. N. America.

Japan Flora: Tufted annual; culms erect, slender, rather firm; leaf-blades glaucous-green, involute, filiform, 5-15 cm. long, 0.5-1 mm. wide; ligules nearly truncate, about 1 mm. long; panicles erect, narrow, very dense, the branches solitary, short, appressed to the axis; spikelets short-pedicelled, 6-8 mm. long, pale green, 3- to 5-flowered; lower glume broadly lanceo­late, 1-2 mm. long, 1-nerved, the upper glume linear-lanceolate, 5-6 mm. long, acuminate, 3-nerved, keeled; lentimas nar­rowly lanceolate, acuminate, 5-6 mm. long, not keeled, prom­inently scabrous; awn erect, delicate, about 15 nun. long; stamens 1-3; anthers about 1.2 mm. long.----- May-June. Nat­uralized in grassy places in lowlands and waysides.

Honshu, Shikoku, Kyushu; common.  Europe, N. Africa, and w. Asia; naturalized in e. Asia and America.