Lemon Tree, aka Citrus limon, Meyer Lemon, scientifically known as Citrus x meyeri, is a popular citrus tree due to its unique, sweetly-scented lemons. Unlike regular lemons, Meyer Lemons are smaller in size, rounder in shape, and have a thinner, deep-yellow to orange skin with a dark yellow pulp. They are perfect for adding a bright, citrusy note to dishes or drinks, or just for enjoying as a unique indoor or outdoor plant.