Affiliation: | 1. Graduate School of Agriculture, Ibaraki University, Ami, Ibaraki 300-0393, Japan;2. Department of Botany, National Museum of Nature and Science, 4-1-1 Amakubo, Tsukuba, Ibaraki 305-0005, Japan;3. Laboratory of Pharmacognosy, Showa Pharmaceutical University, Higashi-tamagawagakuen 3, Machida, Tokyo 194-8543, Japan |