Skinned barley - Kawamugi

Japanese: 皮麦 - かわむぎ

The caryopses of barley (six-rowed barley) and two-rowed barley are surrounded by the outer and inner caryopses. Of these, barley whose inner and outer caryopses remain attached to the caryopses even after they are fully ripe is called hulled barley, while barley whose caryopses can be easily removed from the inner and outer caryopses after they are fully ripe and dried is called naked barley (previously called hull-less barley). Barley with properties intermediate between the two is called semi-naked barley. In hulled barley, the inner and outer caryopses adhere to the caryopses during ripening due to a secretion from the surface of the caryopses (the ovary wall).

Source: Heibonsha World Encyclopedia, 2nd Edition Information

Japanese:

オオムギ(六条オオムギ)と二条オオムギの穎果（えいか）は，外穎と内穎とに包まれている。このうち，完熟後も内･外穎が穎果に癒着しているものを皮麦，完熟乾燥後は内･外穎から容易に穎果をとり出せるものを裸麦(従来は稞麦と記した)naked barley(hull‐less barley)という。また両者の中間的な性質のものを半裸オオムギと呼ぶ。皮麦では穎果の表面(子房壁)からの分泌物質により，登熟の途中で内･外穎と穎果が接着する。

出典　株式会社平凡社世界大百科事典第２版について　情報

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