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Celery (''Apium graveolens'') is a cultivated plant, variety in the family Apiaceae, commonly used as a vegetable. Depending on location, either its stalks, or its hypocotyl, are eaten and used in cooking. In North America the dominant variety most commonly available in trade is "celery", ''Apium graveolens'' var. ''dulce'', whose stalks are eaten raw, or as an ingredient in salads, or as a flavoring in soups, stews, and pot roasts. In Europe the dominant variety most commonly available in trade is celeriac (''Apium graveolens'' var. ''rapaceum'') whose hypocotyl forms a large bulb which is eaten cooked, or as a the major ingredient in a soup. It is commonly, but incorrectly, called "celery root". The leaves of ''rapaceum'' are used as seasoning, but the stalks find only marginal use. Celery seed is also used as a spice. The plant grows to tall. ==Description== Celery leaves are pinnate to bipinnate with rhombic leaflets long and 2–4 cm broad. The flowers are creamy-white, 2–3 mm in diameter, and are produced in dense compound umbels. The seeds are broad ovoid to globose, 1.5–2 mm long and wide. Modern cultivars have been selected for solid petioles, leaf stalks.〔 A celery stalk readily separates into "strings" which are bundles of angular collenchyma cells exterior to the vascular bundles. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「celery」の詳細全文を読む スポンサード リンク
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