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特許 権利維持 Ginkgo (Ginkgo biloba; in Chinese and Japanese: 銀杏 (pinyin romanization: yín xìng, Hepburn romanization: ichō or ginnan), in Korean: 은행 (Korean Romanization: "eun haeng"), in Vietnamese: bạch quả), acceptable variant gingko[3] and also known as the maidenhair tree, is a unique species of tree and is the only extant taxon in the division Ginkgophyta.