Most lettuces grow in heads, either tightly closed crispheads or looseleaf heads. Lettuces like arugula and mizuna grow as leaves on stems youll find these sold loose or in bags or plastic boxes, oftentimes mixed with different varieties called mesclun salad. But if youre looking to buy single variety leaf lettuces, youll want to shop at the farmers market, where they often keep them separated. And now is the perfect time to do so since theyre in season all summer long. Learn the different types of lettuces in the slideshow below. PHOTO GALLERYBEFORE YOU GOLettuce Varieties. PHOTO GALLERYLettuce Varieties. An overlock is a kind of stitch that sews over the edge of one or two pieces of cloth for edging, hemming, or seaming. Usually an overlock sewing machine will cut the. Culex cuelex Species of this genus are found breeding in freshwater habitats such as pools, ditches, ponds, and even in effluents of sewage treatment plants. Sleepinducing effect of lettuce Lactuca sativa varieties on pentobarbitalinduced sleep Hae Dun Kim1 KiBae Hong2 Dong Ouk Noh3 Hyung Joo Suh4. SWIS FacilitySite Search. The Solid Waste Information System SWIS search page allows searching of all facilitiessites by multiple criteria, or location of a. Lettuce Varieties. Lettuce Varieties. Boston. Boston a. Bibb lettuce is delicate lettuce with pale green, soft cup shaped leaves. The flavor is mild and sweet. Sometimes in the supermarket you will find hydroponically grown Boston lettuce, which has the benefit of having no dirt or sand in the leaves. Photo from lt a hrefhttp www. Flickrlt a. Flickr photofarmer. Main photo from 3. Healthy Dinner Ideas For Kids.