- celtuce, stem lettuce, Lactuca sativa asparagina - lettuce valued especially for its edible stems
--1 is a kind of lettuce
--1 has parts: celtuce - celtuce - leaves having celery-like stems eaten raw or cooked
--2 is a kind of salad green, salad greens
--2 is a part of celtuce, stem lettuce, Lactuca sativa asparagina