" Several weeks before he left Peking, Meyer visited a small village and noticed, in a house's doorway, a small bush with fruit as yellow as a fresh egg yolk. Meyer ignored a man who told him the plant was ornamental, its fruit not typically eaten but prized for its year-round production. The fruit looked like a mix between a mandarin and a citron (which later genetic testing would confirm). It was a lemon, but smaller and rounder---its flavor surprised him as both sweeter than a citron and tarter than an orange. And its price, twenty cents per fruit or ten dollars per tree, suggested that people with an abundance of other citrus valued it greatly.
Meyer had little room in his baggage, but he used his double-edged bowie knife to take a cutting where the branches formed a V, the choice spot to secure its genetic material.
That cutting made the voyage to Washington, and then the trip to an experiment station in Chico, California, where it propped up a new lemon industry grateful to receive a sweeter variety. The lemon became known as the Meyer lemon, and from it came lemon tarts, lemon pies, and millions of glasses of lemonade. "

― , The Food Explorer: The True Adventures of the Globe-Trotting Botanist Who Transformed What America Eats