Brazilian palm of genus euterpe whose buds are eaten like cabbage when young.

巴西棕榈科植物叶芽如卷心菜嫩时可食。

To cause each other pain comes from the Japanese animated series Guilty Crown's opening song "Euterpe". The lyrics of the song go "Why do humans hurt each other?"

赍“来啊，互相伤害啊！”出自于日本动画片《罪恶王冠》的片头曲。这首歌的歌词唱道：“为什么人类要互相伤害呢?”