Bryonia dioica

Tracheophyta MagnoliopsidaCucurbitaceaeBryoniaBryonia dioica

Ecology

A dioecious scrambling perennial herb with a massive, tuberous root-stock. It grows on well-drained, often base-rich, soils in hedgerows, scrub, woodland borders, and on rough and waste ground. It is unpalatable to rabbits and can be locally frequent around warrens. Lowland.

Status

Native

World Distribution

Submediterranean-Subatlantic element.

© P. Shannon

Broad Habitats

Boundary and linear features (eg hedges, roadsides, walls)

Light (Ellenberg): 7

Moisture (Ellenberg): 5

Reaction (Ellenberg): 7

Nitrogen (Ellenberg): 7

Salt Tolerance (Ellenberg): 0

January Mean Temperature (Celsius): 3.6

July Mean Temperature (Celsius): 16

Annual Precipitation (mm): 726

Height (cm): 400

Perennation - primary

Perennial

Life Form - primary

Non-bulbous geophyte (rhizome, corm or tuber)

Woodiness

Herbaceous

Clonality - primary

Little or no vegetative spread

Count of 10km squares in Great Britain: 1004

Count of 10km squares in Ireland: 0

Count of 10km squares in the Channel Isles: 4

Atlas Change Index: -0.5

Weighted Changed Factor: 3

Weighted Change Factor Confidence (90%)

11

JNCC Designations

NBNSYS0000003717