Where does “iceberg lettuce” come from?

iceberg lettuce (English): A lettuce cultivar (Lactuca sativa var. capitata) noted for its crunchiness; the most familiar of all lettuces sold in the United States

Definitions

  1. A lettuce cultivar (Lactuca sativa var. capitata) noted for its crunchiness; the most familiar of all lettuces sold in the United States

Words derived from “iceberg lettuce”