千葉大学東葛キャンパス植物データベース

属名の詳細: Pyrus L. [12]

属和名: ナシ

属英名: Pear

種数: 73

発表年: 1753

正名？: 正名

科名: Rosaceae

科の和名: バラ

科内分類群: モモ（サクラ）亜科 (Amygdaloideae): リンゴ連 (Maleae): リンゴ亜連 (Malinae)

原生地・分布（英語）: Temp. Eurasia to Indo-China, NW. Africa

説明（英語）: Genus of about 30 species of upright, mainly deciduous trees and shrubs, found in woodland, in rocky places, and on hillsides in Europe, W. to E. Asia, and N. Africa. They are grown for their habit, flowers, and fruits. The leaves are alternate, entire or very rarely lobed, ovate to oblong, elliptic, or oval, the margins often with forward-pointing teeth; some have good autumn colour. The 5-petalled, saucer- to bowl-shaped flowers, borne in umbel-like racemes, are white, occasionally pink, and usually have red anthers. The fruits are spherical to typically pear-shaped; numerous cultivars have been bred specifically for the production of culinary and dessert pears. Ornamental pears are best grown as specimen trees on a lawn; the smaller ones such as P salicifolia ’Pendula’, and those of narrow habit, such as P. calleryana ’Chanticleer’, are particularly suitable for growing in a small garden.

耐寒性（英語）: Fully hardy.

栽培（英語）:

繁殖（英語）: Sow seed in an open frame or in a seedbed in autumn. Bud in summer, or graft in winter.

病害虫（英語）: Susceptible to aphids, caterpillars, leaf midges, and mites. They are also prone to fireblight, honey fungus, powdery mildew, canker, brown rot, and scab.

説明:

備考（英語）:

備考: ナシ

属のタイプ種名:

系統学的定義:

更新情報: 作成: 2007-12-06 12:51; 更新: 2024-01-18 16:51 by hkokubun@mac.com

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