noun
Artemisia montana; a species of mugwort
A perennial plant in the Asteraceae family, native to Japan and East Asia. The name literally means 'large mugwort'.
大蓬は山地に自生する多年草です。
Artemisia montana is a perennial plant that grows wild in mountainous areas.
オオヨモギの葉はヨモギよりも大きい。
The leaves of Artemisia montana are larger than those of common mugwort.
蓬 (よもぎ) is the common mugwort (Artemisia princeps), while 大蓬 (おおよもぎ) is a different, larger species (Artemisia montana).
From 大 (おお, 'large') + 蓬 (よもぎ, 'mugwort'), referring to a larger species of mugwort.