千葉大学東葛キャンパス植物データベース

属名の詳細: Eryngium [1071]

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属英名: Eryngo, Sea holly

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科名: Apiaceae

科の和名: セリ

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説明（英語）: Genus of 230 species of hairless annuals, biennials, and deciduous and evergreen perennials. Those that are native to dry, rocky places and coastal areas in Europe, N. Africa, Turkey, C. Asia, China, and Korea usually have tap roots, ovate to heart-shaped, often divided leaves, and congested heads of blue or white flowers, with conspicuous bracts. Those that are from often wet and marshy grassland in Mexico, Brazil, Argentina, and warm-temperate regions of North, Central, and South America, usually have fibrous roots, sword-shaped, ever-green foliage, less showy, greenish white (occasionally purplish brown) flowers, and small bracts. Most eryngiums form basal rosettes, the leaves often spiny and with silvery white veins, and bear crowded, hemispherical to cylindrical, thistle-like umbels of stalkless flowers on branched stems. Eryngiums are striking plants for naturalizing; some also provide long-lasting displays for a border. They may be dried for arrangements; cut the stems before the flowers are fully open.

耐寒性（英語）: Fully hardy to frost hardy; frost-hardy American species tolerate temperatures down to -10°C (14°F), although leaves may be damaged if temperatures drop below -7°C (19°F).

栽培（英語）:

繁殖（英語）: Sow seed in containers in a cold frame as soon as ripe. Divide in spring, although they are slow to re-establish. Insert root cuttings of perennials in late winter.

病害虫（英語）: Prone to root rot, slugs, snails, and powdery mildew.

説明:

備考（英語）:

備考: マツカサアザミ

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更新情報: 作成: 2007-12-06 12:51; 更新: 2020-09-04 03:56

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