(Lactuca) This is a large group of hardy annuals and perennials found wild in various parts of Europe. They are very popular salad plants commonly known as Lettuce. The most commonly grown kinds of Lettuce are derived from L. sativa. These varieties fall into 4 classes, based on their shape and growth. Minor's Lettuce is a different species (see Mo... Found on http://www.encyclo.co.uk/local/10004