Sweet grass

Japanese: sweet grass（英語表記）sweetgrass

...A perennial grass of the grass family found in hilly and mountainous areas (illustration). According to Makino Tomitaro, kobo means fragrant bamboo, and is named for the sweet fragrance of this grass, and its Chinese name, bamboo fragrant, and its English names, sweet grass and vanilla grass, are also named for the same reason. The other English name, holy grass, is a direct translation of the Latin genus name, meaning "sacred grass," and comes from the former custom of scattering this grass around churches on Christian holidays in Northern Europe.

From [Ratstrea]

...The fruit is 1.3 mm long and obovate, and when ripe, the reddish-brown seeds are exposed outside the pericarp. It is distributed from Honshu south to the Ryukyu Islands and mainland China, and the basic variety S. indicus (L.) R.Br. (English name: sweet grass) is found in the tropics of both hemispheres. The Japanese name is "mouse tail," based on the shape of the grayish, slender inflorescence.

*Some of the terminology that mentions "sweet grass" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…丘陵地や山地の草地に見るイネ科の多年草（イラスト）。コウボウは牧野富太郎によれば香茅の意味で，この草に一種の甘い芳香があることによるが，漢名の茅香や，英名のsweet grass,vanilla grassも同じ理由による。また，もう一つの英名holy grassは“聖なる草”の意味のラテン語の属名の直訳で，北ヨーロッパではキリスト教徒の祭日に教会のまわりにこの草をまいたかつての習慣に由来する。…