Eurasian perennial mint have small lilac-blue flowers and ovate leaves; yields an aromatic oil
同义词：Mentha pulegium
erect hairy branching American herb having purple-blue flowers; yields an essential oil used as an insect repellent and sometimes in folk medicine
同义词：American pennyroyal??/??Hedeoma pulegioides
英汉双解词典包含3185865条英汉词条，基本涵盖了全部常用单词的翻译及用法，是英语学习的有利工具。