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annual garden plant (Lactuca sativa and varieties) of the family Asteraceae (asteraster
[Gr.,=star], common name for the Asteraceae (Compositae), the aster family, in North America, name for plants of the genus Aster, sometimes called wild asters, and for a related plant more correctly called China aster (Callistephus chinensis
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 family), probably native to the East Indies or Asia Minor, possibly as a derivative of the widespread weed called wild lettuce (L. scariola). L. sativa has been grown as a salad plant since antiquity and is unknown in the wild. Three types of lettuce are planted: head, or cabbage, lettuce; the leaf, or loose, type; and Cos lettuce, or romaine. The first forms a tight, crisp, white head; the second has many more leaves and a less compact head, which is white toward its center only. Cos lettuce, or romaine, forms long, upright leaves, which, according to variety, may or may not have to be tied up to blanch and form a head. It is not as commonly planted, but is useful where summers are too hot for the other two varieties. As lettuce has increased in popularity in the United States, forcing it for winter use is becoming an extensive industry, especially near large cities. Much of the winter crop comes from Florida and California. The plant is generally eaten as a salad but may be cooked, as it often is in France. A narcotic from the thickened juice of some Lactuca species has been used as an opium substitute. Among the many north temperate species is L. canadensis, the American wild lettuce. Lettuce is classified in the division MagnoliophytaMagnoliophyta
, division of the plant kingdom consisting of those organisms commonly called the flowering plants, or angiosperms. The angiosperms have leaves, stems, and roots, and vascular, or conducting, tissue (xylem and phloem).
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, class Magnoliopsida, order Asterales, family Asteraceae.



(Lactuca sativa), an annual vegetable of the family Compositae. The species is descended from L. serriola, which grows wild in Western and Southern Europe, Southwest Asia, and North Africa. In the USSR L. serriola is found in Siberia (as far as the Altai region), Middle Asia, and Transcaucasia. Lettuce is cultivated almost throughout the world. It is raised in all parts of the USSR.

Lettuce develops a rosette of radical leaves and, later, a strongly branched flower-bearing stem measuring 60–120 cm tall and having a large number of small inflorescences (heads). The flowers are yellow and bisexual, and the fruit is an achene with a pappus.

Lettuce is a cold-resistant plant; its shoots can withstand temperatures to - 5°C. The plant requires a lot of light and moisture. Soils with a neutral reaction and rich in organic matter are most suitable. The leaves, which are used fresh in salads, contain many vitamins (C, B, PP), carotene, and salts of iron and phosphorus. The yield is 300–500 quintals per hectare.

There are several types of lettuce. Leaf lettuce (var. secalina), which forms a rosette of leaves but not a head, has a vegetative period of 30 to 40 days. A garden form of leaf lettuce is Moscow Hothouse. Head lettuce (var. capitata) forms a round or flat-rounded head; its vegetative period is 55 to 95 days. Garden forms include Bettner, May, Yellow Stone Head, and Berlin Yellow. Cos lettuce (var. romana), which has a elongate-oval head, includes the forms Paris Green and Ballon. Its vegetative period is 70 to 100 days.

Lettuce is grown in open or sheltered ground. It is planted in the central part of the European USSR in the open ground with a vegetable seeder in late April or early May and shortly before the onset of winter. The most common variety is Grand Rapids. Care includes thinning, loosening the soil, weeding, and watering.

Leaf varieties are harvested all at once; heading varieties are harvested as each head forms. The earliest harvests are obtained by sowing coated seeds before winter and covering the plantings with a film in the spring. Cos lettuce is grown for autumn and winter consumption. It is sown in open hotbeds in late June or in the open ground. Moscow Hotbed and head varieties are raised in sheltered ground.

In the central part of the European USSR lettuce seeds are sown in early January in hothouse flats. In southern regions the seeds are sown similarly but in December. When the plants have two to four leaves, they are set out in a permanent place. The crop (1.5–5 kg per sq m) is harvested in late February or in March. For hotbed cultivation, the seeds are sown in January in greenhouses and set out in the hotbeds in March. The crop (2–3 kg per sq m) is harvested in early April.


Markov, V. M. Ovoshchevodstvo. Moscow, 1966.


What does it mean when you dream about lettuce?

Lettuce is a slang word for money. Depending on the dreamer’s association with this symbol, the dream may indicate fruitfulness or financial matters.


Lactuca sativa. An annual plant of the order Asterales cultivated for its succulent leaves; common varieties are head lettuce, leaf or curled lettuce, romaine lettuce, and iceberg lettuce.


1. any of various plants of the genus Lactuca, esp L. sativa, which is cultivated in many varieties for its large edible leaves: family Asteraceae (composites)
2. the leaves of any of these varieties, which are eaten in salads
3. any of various plants that resemble true lettuce, such as lamb's lettuce and sea lettuce
References in periodicals archive ?
It has tremendous flavor, good shelf life, and because it is hydroponically grown, it's free of the fine grit you often find in Boston lettuce grown in sandy soil," said Bill Pool, manager of agricultural production and research at Wegmans.
GREEK SALAD WITH LEMON-HERB WITHLEMON-HERB LEMON-HERB DRESSING: 3 tablespoons olive oil 3 tablespoons lemon juice 1 teaspoon Dijon mustard 1 clove garlic, crushed 1/4 teaspoon dried oregano salat and pepper 1 head Boston lettuce, torn into ite-size pieces 1/2 cucumber, sliced 1 small purple onion, thinly sliced 1 green pepper, sliced 1 pint cherry tomatoes, cut in half 4 fresh basil leaves, julienned 8 sun-dried tomatoes packed in oil, drained and sliced 1/2 cup pitted ripe olives 2 ounces feta cheese, crumbled
extra-virgin o salt and freshly ground black pepper 8 Boston lettuce leaves Cook the lentils in 6 cups boiling water until tender but not soft, about 25 minutes.
2 catfish fillets, cut into 1-inch pieces 1 medium red bell pepper, roasted and cut into strips 1 medium yellow bell pepper, roasted and cut into strips 1 small red onion, sliced and separated into rings 1 teaspoon dried dillweed 1/4 cup olive oil 1/4 cup balsamic vinegar 1 large clove garlic, minced 1 head Boston lettuce, torn 2 cups romaine leaves, torn Salt and pepper to taste Chopped parsley
The beef might be brought with braised Boston lettuce, a potato leek torte and wild mushrooms.
beef 3/4 cup Italian dressing, divided 1 1-pound loaf Vienna bread, unsliced 1 hard-cmked egg, chopped 2 tablespoons chopped ripe olives 6 Boston lettuce leaves 6 large tomato slices, 1/4 inch thick 6 large red onion slices, 1/8 inch
6 small new potatoes, unpeeled 3 eggs, hardboiled, peeled and quartered 3 medium tomatoes, cut into wedges 2 7-ounce cans tuna, drained 2 small heads Boston lettuce 1 10-ounce package frozen whole green beans, cooked and drained 1/4 cup sliced ripe olives, (optional)
For salad, cut Boston lettuce and radicchio into ribbons and toss with apple, cheese and walnuts.
In other news, T&A completed its Summer Fun Sweepstakes with Artisan, Romaine and Boston lettuces to support category sales through July.

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