Tomato (Solanum lycopersicum)
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Lycopersicon lycopersicum
Lycopersicon esculentum
The tomato (Solanum lycopersicum) is a plant in the Solanaceae or nightshade family, as are its close cousins tobacco, chili peppers, potato, and eggplant. The tomato is native to Central, South, and southern North America from Mexico to Peru. It is a perennial, often grown outdoors in temperate climates as an annual, typically reaching to 1–3 m (3 to 10 ft) in height, with a weak, woody stem that often vines over other plants.
The leaves are 10–25 cm long, pinnate, with 5–9 leaflets, each leaflet up to 8 cm long, with a serrated margin; both the stem and leaves are densely glandular-hairy. The flowers are 1–2 cm across, yellow, with five pointed lobes on the corolla; they are borne in a cyme of 3–12 together. The word tomato derives from a word in the Nahuatl language, tomatl. The specific name, lycopersicum, means “wolf-peach” (compare the related species S. lycocarpum, whose scientific name means “wolf-fruit”, common name “wolf-apple”).
According to Andrew F Smith’s The Tomato in America,[1] the tomato probably originated in the highlands of the west coast of South America. Smith notes there is no evidence the tomato was cultivated or even eaten before the Spanish arrived. Other researchers, however, have pointed out that this is not conclusive, as many other fruits in continuous cultivation in Peru are not present in the very limited historical record. Much horticultural knowledge was lost after the arrival of Europeans.
There is a competing hypothesis that says the tomato, like the word “tomato”, originated in Mexico, where one of the two apparently oldest “wild” types grows. It is entirely possible that domestication even arose in both regions independently.