watchhowisoar reblogged your photoset “historical-nonfiction: There are only three original citrus fruits: the citron, the pummelo and the mandarin. All...”
#I don't really understand how we know this?#science is not my strong suit#does it mean that those three are the only 3 citrus fruits that grow in the wild? and all the others are the product of man/farming?
Basically, yes, according to the Mental Floss article Know Your Citrus.













