1. Kihara, H. andSH. Wakakuwa. 1934. Weitere Untersuchungen über die pentaploidenTriticum-Bastarde IV. Jap. Journ. Bot.6: 381–387.
2. Kitamura, S. 1950. On Tea and Camellias. Acta Phytotax, Geobot.14: 56–63 (in Japanese).
3. Kurosawa, S. 1971. Cytotaxonomical studies on the genusAucuba. J. Jap. Bot.46: 231–238.
4. Miki, S. 1937. The water phanerogams in Japan, with special reference to those of prov., Yamashiro. Kyoto Fu Shiseki-Meisho Tennenkinenbutu Chosa-Hokoku18: 72–76 (in Japanese).
5. Tuyama, T. 1956. Snow Camellias: its distribution, and relationship to Garden Camellias. Natural Science and Museums.23: 119–135 (in Japanese).