千葉大学東葛キャンパス植物データベース

属名の詳細: Hedera L. [202]

属和名:

属英名: Ivy

種数:

発表年:

正名？: 正名

科名: Araliaceae

科の和名: ウコギ

科内分類群:

原生地・分布（英語）: Europe to Asia

説明（英語）: Genus of 9-11 species of evergreen, woody-stemmed, trailing or self-clinging climbers. They are found in light woodland or on trees or rocks in N. Africa, the Canary Islands, the Azores, and Madeira, and from Europe to the Himalayas, China, Korea, and Japan. They have alternate, 3- to 5-lobed or entire leaves (see panel right), which are sometimes attractively variegated. Ivies show 2 distinct stages of growth. In the creeping or climbing juvenile stage, ivies have adventitious rootlets, lobed leaves, and minutely hairy young shoots. In the adult stage, they produce aerial "bushes" with entire, usually broadly ovate leaves and, in autumn, spherical umbels of tiny, 5-lobed, yellowish green, bisexual flowers; these are followed by spherical, black, sometimes orange or yellow fruits, 4-7mm (1/8-1/4in) across, which are a valuable winter food source for birds. ivies vary greatly in size and vigour and should be selected to suit the space available. They are ideal as a backdrop for other plantings, or for covering a wall. Variegated ivies are useful for lightening a dark corner. If wall-grown, ivies will not damage sound brickwork, but they may dislodge loose mortar and damage paint work. Dense-growing ivies are excellent ground cover, thriving even in dry shade. H. helix has produced numerous variants and cultivars, many of which are easily grown as houseplants in hanging baskets or containers. Ivies may also be trained on wire forms to produce topiary features. All parts of ivy may cause severe discomfort if ingested; contact with the sap may aggravate skin allergies or irritate skin.

耐寒性（英語）: Fully hardy to half hardy.

栽培（英語）:

繁殖（英語）: In summer, root semi-ripe cuttings of juvenile growth to obtain plants with a trailing habit; use adult growth to obtain plants with a bushy, "tree-ivy" habit. If standards are required, graft small-leaved ivies on to single-stemmed x Fatshedera lizei specimens, 45-90cm (18-36in) above soil level.

病害虫（英語）: Red spider mites, scale insects, aphids, and leaf spot may be a problem.

説明:

備考（英語）:

備考: キヅタ(フユヅタ)，オカメヅタ

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: 2022-03-09 15:20

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