Lettuce is a popular ingredient formaking salad. I dictated a short passage aboutlettuceand found there are hundreds of kinds ofhead and leaf lettuces. The most popular ones include head lettucessuch as iceberg, Boston, bibb and romaine. But actually it's hardto understand each category without an illustration. I searched website but could not find a page include all information. Thisarticle is the onethatgathersall pieces I think useful for illustration.
Iceburg Lettuce
Butterhead (Boston) Lettuce
Bibb Lettuce
Romaine Lettuce
Leaf Lettuce
Following categories comes from websitehttp://science.bowenwang.com.cn/plants-lettuc e.htm.I think it’s clear and helps.
人工种植的莴苣有四个大的品种,在每一个品种中又有数不清的小分类:
结球莴苣(headlettuce),它能长出紧密地圆形叶球。有一种长着极其紧密的叶球,叶子脆爽的结球莴苣品种叫做冰山莴苣(iceberg)lettuce,或者皱叶莴苣(crispheadlettuce)。另一个叶球较松,叶子也柔软一些的品种叫做波士顿莴苣(butterheadlettuce)。还有一个中间品种叫做比布莴苣(Bibb lettuce)。长叶莴苣(cos, or romaine,lettuce)长着细长的叶球,其主要品种包括帕里斯岛莴苣(Parris Island)和红长叶莴苣(redromaine)。
散叶莴苣(leaflettuce)的叶子是松散的一团。最常见的散叶莴苣品种是黑籽辛普森莴苣(black-seeded Simpson)。
莴笋(AsparagusLettuce)被种植以取食其肥厚的茎部。莴笋的食用方法和芦笋差不多。
芹菜莴苣(Celtuce)可能是莴笋的一个变种,叶子和茎部都可以食用。