Alopecurus agrostis L. Sp. Pl. ed. 2. 1: 89/ 1762; Hayata, Icon. Pl. Form. 7: 82. 1918; Honda, Monogr. Poac. Jap. 202. 1930.
Culm up to 45 cm tall, about 2 mm in diameter. Blade 3 mm wide; ligule 2 mm long. Panicle sylindrical, contracted, up to 8 cm long. Spikelets 1-flowered, oblong, 4-5 mm long, flattened, falling entirel at maturity; glumes connate at the base, slightly shorter than the spikelet, membranous, fused at the basal part, 5-nerved, awned from the back, below the middle, awn protruding; palea absent; anther 2 mm long. Caryopsis enclosed in the lemma, 2.5 mm long, oblong; embryo less than 1/3 the length of the caryopsis. Lodicules reduced.
TAIPEI: Taipei, Yano 511.
Distsributed in temperate parts of Europe and Asia.
Rare in Taiwan and probably introduced.