noun
Scirpus hotarui; a species of bulrush
A specific species of bulrush native to East Asia. The name is usually written in katakana.
ホタルイは湿地に生える植物です。
Hotarui is a plant that grows in wetlands.
The name ホタルイ (蛍藺) literally means 'firefly rush', likely from the plant's appearance or habitat. The exact derivation is uncertain.