Fruit of the fu-sang people:

"Pear like, black color fruit, can be kept for over a year without damage." from the Shan Hai Jing, 1st written record of travels from China to North America, "Book of the Mountain and Seas" - a geographic log book of  the world, by Ancient Chinese people. 

Citation from : "Pale Ink", by Dr. Henriette Mertz, 1954. 

(not exact quote, will verify original text)

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§ß®á¡]Hibiscus¡^

fu-sang = Hisbiscus

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