1, from the strict sense of lettuce and lettuce is not the same kind of vegetable. Lettuce is not lettuce, it is only a kind of lettuce, lettuce contains two parts, one is leafy, and the other part is stem, the leafy part is lettuce, the stem part is lettuce.

2, lettuce and lettuce difference: lettuce contains lettuce, and lettuce is just a part of lettuce, lettuce is a subdirectory under the general catalog, lettuce also contains lettuce, lettuce is mainly to eat its leaves, and lettuce is mainly to eat lettuce stems, we are often in the life of lettuce in fact is lettuce.