noun
hitoegusa (Monostroma nitidum)
A species of edible green algae, often used in Japanese cuisine, especially in soups and as aonori.
ヒトエグサは味噌汁の具としてよく使われる。
Hitoegusa is often used as an ingredient in miso soup.
The name literally means 'single-layered grass', referring to its thin, single-cell-layer structure.