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Lettuce
Top > Horticulture > Vegetables > Lettuce
"The lettuce plant (Lactuca sativa, Asteraceae) comprises four cultivar groups which are ordered by head formation and leaf structure. Butterhead Lettuce (var. capitata) forms small, loose folded heads; Crisphead Lettuce (var. crispa) forms tight, dense heads; Romaine Lettuce (var. longifolia) has long, sword-shaped, non-head-forming leaves; and Celtuce Lettuce (var. angustana) is grown for its romaine-like foliage and mainly for its thick, edible stem. We provide information about the numerous aspects of production of lettuce including cultivation, pests and diseases, harvest, postharvest and storage."
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