An annual or biennial grass of the grass family (APG classification: Poaceae). The culms are clumpy, 10-30 cm tall, and soft and not rough. The leaves are 4-10 cm long and have obtuse tips. From March to November, the culms bear broad ovate, 4-8 cm long, panicle-shaped inflorescences at the tips of the culms, with two branches at each node of the main axis. The spikelets are ovate, 3-5 mm long, sometimes tinged purple, and contain 3-5 florets. The glumes are bluntly pointed, about 3 mm long, with a transparent membranous edge, and densely covered with fluff below the middle of the dorsal side. The keel of the inner glume has fluff. It grows in vacant lots, fields, and roadsides throughout Japan, and is distributed worldwide. The name comes from the fact that the edges of the leaf sheaths and glumes are membranous, resembling a thin, single-layered garment. [Jianchang Xu August 20, 2019] ©Kanzo Otawa "> Annual bluegrass (specimen drawing) Source: Shogakukan Encyclopedia Nipponica About Encyclopedia Nipponica Information | Legend |
イネ科(APG分類:イネ科)の一年草または越年草。稈(かん)は株立ちし、高さ10~30センチメートル、軟弱でざらつかない。葉は長さ4~10センチメートル、先端は鈍形。3~11月、稈の先端に広卵形で長さ4~8センチメートル、主軸の各節に分枝を2本ずつもつ円錐(えんすい)花序をつける。小穂は卵形で長さ3~5ミリメートル、ときに紫色を帯び、小花は3~5個。護穎(ごえい)は先が鈍くとがり長さ約3ミリメートル、縁(へり)は透明な膜質で、背面の中間部以下に綿毛を密生する。内穎の竜骨に綿毛がある。日本全土の空き地、畑、道端に生え、全世界に分布する。名は、葉鞘(ようしょう)や護穎の縁(へり)が膜質で、薄い単衣(ひとえ)を思わせることによる。 [許 建 昌 2019年8月20日] ©大多和鐘三"> スズメノカタビラ〔標本画〕 出典 小学館 日本大百科全書(ニッポニカ)日本大百科全書(ニッポニカ)について 情報 | 凡例 |
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