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出典:Wikipedia
出典:『Wikipedia』 (2011/07/29 00:17 UTC 版)
Romaine or cos lettuce (Lactuca sativa L. var. longifolia) is a variety of lettuce which grows in a tall head of sturdy leaves with a firm rib down the center. Unlike most lettuces, it is tolerant of heat. The name cos lettuce derives from the Greek island of Kos, where it originated.
Romaine lettuce