Chiba University Matsudo/Kashiwa Campus Plant Database

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Details of genus: Hedera L. [202]

genus_ja:

genus_en: Ivy

# spp.:

pub_year:

accepted: Accepted

Family: Araliaceae

family_ja: ウコギ

Infra familial classification:

distribution_en: Europe to Asia

description_en: 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.

hardiness_en: Fully hardy to half hardy.

cultivation_en:

propagation_en: 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.

pests_en: Red spider mites, scale insects, aphids, and leaf spot may be a problem.

description_ja:

The essential 1000 genera certification Genus Hedera (ヘデラ)

2019 edition

C Level
Family ウコギ
キヅタ属:キヅタ(フユヅタ)、カナリーキヅタ(オカメヅタ)
ツタ(ナツヅタ)は Parthenocissus

2003 edition

C Level
Family ウコギ
つる植物
キヅタ(フユヅタ),オカメヅタ

1986 edition

C Level
Family ウコギ
つる性木本
キヅタ

comment:

comment_ja: キヅタ(フユヅタ),オカメヅタ

type_species:

Phylogenetic definition:

Update Information: Created: 2007-12-06 12:51; Updated: 2022-03-09 15:20

family:

SystemAccepted?Scientific nameJapanese nameInfra-familial classification# species
APG4 Araliaceae ウコギ科 Show
PB2 Araliaceae ウコギ科 Show
PB3 Araliaceae ウコギ科 Show

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