千葉大学東葛キャンパス植物データベース

属名の詳細: Narcissus L. [362]

属和名:

属英名: Daffodil

種数:

発表年:

正名？: 正名

科名: Amaryllidaceae

科の和名: ヒガンバナ

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原生地・分布（英語）: Europe, Medit.

説明（英語）: Genus of about 50 species of bulbous perennials from a variety of habitats in Europe and N. Africa, usually found in meadows from sea level to subalpine altitudes, and in woodland, river silts, and rock crevices. Many thousands of cultivars have been developed. All are grown for their attractive flowers, borne in spring, sometimes autumn or winter. Leafless stems bear between 1 and 20 flowers, each with 6 spreading perianth segments (petals) surrounding an almost flat or long and narrow corona (the cup or trumpet). The flowers are mostly yellow or white, occasionally green; some have red, orange, or pink coronas. The leaves are basal, often strap-shaped or cylindrical, 15-75cm (6-30in) long, depending on the species. Most daffodils are suitable for planting between shrubs or in a border, or for growing in containers; many are easily naturalized in grass or in a woodland garden. They are excellent for cutting. Smaller species, hybrids, and cultivars are good rock garden plants; some can be naturalized in fine, short grass. N. cantabricus, N. romieuxii, N. rupicola, and N. watieri either need a warm, dry summer dormancy or produce delicate flowers early in the year, and are therefore best grown in an alpine house or bulb frame. In frost-prone areas, grow the less hardy members of Division 8 in a cool greenhouse. Contact with the sap of daffodils may irritate skin or aggravate skin allergies. For horticultural purposes, daffodils are split into 12 divisions, each with distinct characteristics. All are of garden origin, except for Division 10 species. The spreads given for each division provide a guide to planting distance.

耐寒性（英語）: Fully hardy to half hardy.

栽培（英語）:

繁殖（英語）: Sow seed of species as soon as ripe in deep containers in a cold frame. Cultivars do not come true from seed, but new cultivars are often selected from seed of crosses between cultivars, or from open-pollinated seed. After germination, keep frost-free, cool, and moist. After 2 years, transfer seedlings to a nursery bed and grow on until they reach flowering size, which may take up to 7 years. Alternatively, separate and replant offsets as leaves fade in early summer, or in early autumn before new roots are produced.

病害虫（英語）: The most serious problems include large narcissus bulb fly, narcissus eelworm, slugs, narcissus basal rot and other fungal infections, viruses (including narcissus yellow stripe virus), and bulb scale mite on bulbs forced for early flowering.

説明:

備考（英語）:

備考: スイセン

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系統学的定義:

更新情報: 作成: 2007-12-06 12:51; 更新: 2022-03-09 15:20

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