The Meyer lemon is a native of China where it was a decorative house plant. It is thought to be a cross between a lemon and common orange or mandarin. It is rounder and sweeter than true lemons. Meyer lemons were brought to the United States by an agricultural explorer named Frank Nicholas Meyer who collected plant samples all over the world for the United States Department of Agriculture. In the 1940's Meyer lemons were quite popular in California but most were destroyed when it was found they were symptomless carriers of the Citrus tristeza virus which had killed millions of citrus all over the world. A virus free selection was found in the 1950's.
My pretty little Meyer lemon tree has lots of buds on it. I can't wait to see if it produces anything this year. It, of course, cannot live outside here especially while it is so cold at night but I put it on the porch during the warmer days and move it back in at night until we can get the greenhouse done.