This tree is a hybrid cross of Citrus limon (lemon) and Citrus reticulata (mandarin orange). It is less acidic, juicier, and much sweeter than the standard (grocery store) lemon. They lack the rough textured lemon peels and pronounced nipple of the true lemon. Meyer Lemons are a great fruit for juicing and Lemon meringue pie! However, the juices of these fruits can be substituted for one another, especially in baked goods.