千葉大学東葛キャンパス植物データベース

属名の詳細: Cupressus L. [39]

属和名: イトスギ

属英名: Cypress

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科名: Cupressaceae

科の和名: ヒノキ

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説明（英語）: Genus of about 24 species of evergreen, monoecious, coniferous trees from the N. hemisphere, found in dry, open hillside forest. The paired, overlapping, forward-pointing, scale-like leaves vary from rounded to pointed at the tips. The mature bark often breaks off into curling or rounded scales. Small, spherical to ovoid female cones, to 4cm (1 1/2in) long, ripen in the second year but usually persist on the tree, and have 5-20 seeds per scale. Ovoid green male cones, 2-3mm (1/16-1/8in) long, are borne at the shoot tips. Cypresses tolerate dry conditions and are excellent specimen trees. C. macrocarpa may be used as a hedge or screen. In frost-prone areas, grow C. torulosa ‘Cashmeriana’ in a cool greenhouse or conservatory.

耐寒性（英語）: Fully hardy to half hardy.

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繁殖（英語）: Sow seed in a seedbed, or in containers in a cold frame, in spring. Root semi-ripe cuttings in late summer.

病害虫（英語）: May be affected by honey fungus. Coryneum canker may cause the death of twigs and ultimately entire trees. Aphids may cause dieback.

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備考（英語）: N.hemisphere

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更新情報: 作成: 2007-12-06 12:51; 更新: 2022-05-04 14:05

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