noun
Metaplexis japonica; rough potato
A species of flowering plant in the dogbane family, native to East Asia. The Japanese name literally means 'milk grass'.
See also: 蘿芋
乳草は、かつては蘿芋とも書かれた。
Metaplexis japonica was once also written as 蘿芋.
道端で乳草の白い花を見つけた。
I found white flowers of Metaplexis japonica by the roadside.
An older or alternative name for the same plant, Metaplexis japonica. 乳草 is the more common modern term.
Compound of 乳 (ちち, 'milk') and 草 (くさ, 'grass, plant'), referring to the milky sap characteristic of this plant.