Tomatoes, originally termed Solanum lycopersicum by Carl Linnaeus, are botanically referred to as Lycopersicon esculentum, although modern studies are encouraging a return to the original classification. Tomatoes are categorized in subgroups that represent variations observed within the tomato species, referred to as their cultivar: a botanical term that is a contraction of the two-word term cultivated variety, and is equivalent to what growers simply call a “variety.” Therefore, cherry tomatoes are more specifically called Lycopersicon esculentum var. cerasiforme, and they are further classified as either heirloom or hybrid. Heirloom cherry tomatoes are tomatoes that have been reproduced for generations without crossbreeding, whereas hybrid cherry tomatoes are the result of crossing two different varieties.