蛍草 けいさ unclassified name Also 蛍草: ほたるぐさ dayflower 蛍草けいさ unclassified name English JMnedict 1 Keisa 漢字 kanji used 蛍 lightning-bug, firefly 11画 · JLPT N 1 草 grass, weeds 9画 · JLPT N 2