noun
common vervain; common verbena
Refers to the plant Verbena officinalis. Typically written in katakana as クマツヅラ.
クマツヅラはヨーロッパ原産の多年草です。
Common vervain is a perennial plant native to Europe.
The name クマツヅラ (熊葛) literally means 'bear vine', but the exact origin of the name is uncertain.