common self-heal; Prunella vulgaris subsp. asiatica
A perennial herb in the mint family, native to East Asia. Often used in traditional medicine.
Common self-heal blooms with purple flowers in summer.
In Kampo medicine, common self-heal is called 'kagoso'.
The name ウツボグサ (靫草) likely derives from the shape of the flower spike resembling a quiver (靫, utsubo). The exact origin is uncertain.