- Hotta et al. (1989) Useful Plants of the World. Heibonsha, Tokyo (in Jpn)
- Jpn Assoc Advanc Phyto-Regul & Inst Contr Agrochem, Minist Agr, China (2000) Chinese Colored Weed Illustrated Book. Zenkoku-Noson-Kyoiku-Kyokai, Tokyo (in Chn and Eng)
- Osada (1976) Colored Illustrations of Naturalized Plants of Japan. Hoikusha, Osaka (in Jpn)
- Satake et al. (1982) Wild Flowers of Japan, Herbaceous Plants [II]. Heibonsha, Tokyo (in Jpn)
- Shimizu (ed) (2003) Naturalized Plants of Japan. Heibonsha, Tokyo (in Jpn)
- etc.
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