Green foxtail - Enokorogusa

Japanese: エノコログサ - えのころぐさ
Green foxtail - Enokorogusa

An annual weed of the grass family (APG classification: Poaceae). Also called cat hawkweed. The culms are sparse and 20-70 cm tall. The edges of the leaf sheaths are hairy. From August to October, the plant produces cylindrical inflorescences 2-5 cm long at the top, pale green or purple, with hairs on the central axis. The spikelets are about 2 mm long. The fourth glume has unclear horizontal wrinkles, tiny dots, and is surrounded by the second glume. It is commonly found in wastelands and fields throughout Japan, and is widely distributed in Asia. It is considered to be the original species of foxtail millet. It was named after the inflorescence, which resembles the tail of a small dog. The variety Hamaenocoro that grows on the coast and has short inflorescences is called Hamaenocoro. A similar species is the autumn foxtail, which has spikelets 3 mm long and an exposed fourth lemma. The golden foxtail has hairless leaf sheaths, horizontal wrinkles in the fourth lemma, and slightly larger spikelets, about 3 mm long.

[Jianchang Xu August 20, 2019]

[Reference] | Foxtail grass | Golden foxtail
Green foxtail
The culms are clumpy and the leaves are broadly linear. From August to October, they produce cylindrical inflorescences at the top. They are commonly found in grasslands throughout Japan and are known as catjarashi. ©Seishohmaru ">

Green foxtail

Foxtail
It grows on roadsides and forest edges throughout Japan, with culms reaching up to 1m. It flowers from September to November, with the tips of the flower spikes slightly drooping. ©Shogakukan Photo by Okuyama Hisashi ">

Foxtail

Golden-eye hawk
The culms branch at the base and grow obliquely upward. From August to October, they produce cylindrical inflorescences at the ends of the culms. The bristly sterile branches turn golden yellow. ©Shogakukan Photo by Masatoshi Hirose ">

Golden-eye hawk

Major species of the genus Setaria (pictures of specimens)
© Hiroki Sato ">

Major species of the genus Setaria (pictures of specimens)


Source: Shogakukan Encyclopedia Nipponica About Encyclopedia Nipponica Information | Legend

Japanese:

イネ科(APG分類:イネ科)の一年生雑草。一名ネコジャラシ。稈(かん)はまばらに株立ちして高さ20~70センチメートル。葉鞘(ようしょう)の縁(へり)に軟毛がある。8~10月、頂部に長さ2~5センチメートルの円柱形の花序を出し、淡緑色または紫色で中軸に毛がある。小穂は長さ約2ミリメートル。第4穎(えい)は横しわが不明瞭(ふめいりょう)で、微小な点をもち、第2包穎に包まれる。日本全土の荒れ地や畑に普通に生え、アジアに広く分布する。アワの原種とみなされている。名は、花穂が狗(えのこ)(小犬)の尾に似ているためつけられた。海岸に生えて花穂が短いものを変種ハマエノコロという。似た種類に、小穂が3ミリメートルあって第4穎が露出するアキノエノコログサがある。またキンエノコロには葉鞘の縁に毛がなく、第4穎に横しわをもち、小穂は多少大きく、長さ約3ミリメートルである。

[許 建 昌 2019年8月20日]

[参照項目] | アキノエノコログサ | キンエノコロ
エノコログサ
稈は株立ちし、葉は広線形。8~10月、頂部に円柱形の花序を出す。日本全土の草地に普通にみられ、ネコジャラシの名で知られる©Seishohmaru">

エノコログサ

アキノエノコログサ
日本全土の道端や林縁に生え、稈は1mに達する。花期は9~11月で、花穂はやや先が垂れ下がる©Shogakukan 撮影/おくやまひさし">

アキノエノコログサ

キンエノコロ
稈は基部で分枝し、斜上する。8~10月、稈の先に円柱状の花序をつける。剛毛状の不稔枝が黄金色になる©Shogakukan 撮影/広瀬雅敏">

キンエノコロ

エノコログサ属のおもな種類〔標本画〕
©佐藤廣喜">

エノコログサ属のおもな種類〔標本画〕


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