Woody evergreen climbers or shrubs. Leaves alternate, simple, entire or palmately lobed, discolorous, usually glossy above; stipules absent. Inflorescences pedunculate, of 8–many-flowered umbels that are solitary or in terminal panicles. Flowers pedicellate, pedicels continuous with receptacle (not articulated); petals 5; ovary semi-inferior, 5-locular, surmounted by a conspicuous domed disk, styles 4 or 5, fully connate. Fruit a spherical drupe with 2–5 whitish seeds.
As currently circumscribed, the genus includes c. 12 species (Valcarcel & Vargas 2010), in Europe, north Africa and Asia; 3 species naturalised in Australia
McAllister, H. & Marshall, R. (2017). Hedera: The complete guide, Royal Horticultural Society.
Valcarcel, V. & Vargas, P. (2010). Quantitative morphology and species delimitation under the general lineage concept: Optimization for Hedera (Araliaceae), American Journal of Botany 97(9): 1555-1573.