white bryony
Bryonia alba L.


Bryonia alba is a vigorous herbaceous perennial vine resembling kudzu in appearance and growth habit.
Vines emerge each spring from a large fleshy parsnip-shaped tuber and grow rapidly, sometimes to 30 ft. (9.1 m) in a season. Bryonia alba develops a herbaceous vine each year sporting tendrils and palm-shaped, alternate, broadly five lobed leaves which are covered on upper and lower surfaces by small white glands.
Flowers are small, greenish-white, with five petals and produced in clusters.
Fruits consist of dark-blue berries that can be 0.3 in. (0.8 cm) in diameter when fully ripe. When crushed, the berries contain a viscous fluid and emit a very bad odor.
Ecological Threat
Infestations will overgrow and smother small trees and shrubs forming dense mats which shade out all the vegetation it grows upon. If established in areas with no structure to climb, it will form a dense mat covering the ground. All parts of Bryonia alba contain byonin, a toxin that can cause illness or death. Livestock may also poisoned by consuming the plant.

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EDDMapS Distribution

EDDMapS Distribution - This map is incomplete and is based only on current site and county level reports made by experts, herbaria, and literature. For more information, visit www.eddmaps.org

State Regulated List

State Regulated List - This map identifies those states that list this species on their regulated list. For more information, visit Invasive.org

Taxonomic Rank

Kingdom: Plantae
Phylum: Magnoliophyta
Class: Magnoliopsida
Subclass: Dilleniidae
Order: Violales
Family: Cucurbitaceae
Genus: Bryonia
Subject: Bryonia alba L.


Plants - Vines