Ranunculus hederaceus

Tracheophyta MagnoliopsidaRanunculaceaeRanunculusRanunculus hederaceus

Ecology

A small annual or short-lived perennial, found at the edge of small water bodies and by the sheltered backwaters of rivers. It often grows on the cattle-poached edges of ponds, ditches and streams, in wet gateways and on paths and tracks. It tolerates a broad range of pH and nutrient levels, including nitrophilous conditions. 0-770 m (Little Dun Fell, Westmorland).

Status

Native

World Distribution

Suboceanic Southern-temperate element.

© P. Shannon

Broad Habitats

Light (Ellenberg): 7

Moisture (Ellenberg): 10

Reaction (Ellenberg): 5

Nitrogen (Ellenberg): 5

Salt Tolerance (Ellenberg): 0

January Mean Temperature (Celsius): 3.6

July Mean Temperature (Celsius): 14.5

Annual Precipitation (mm): 1093

Height (cm): 9

Length: 23

Perennation - primary

Annual

Perennation - secondary

Perennial

Life Form - primary

Annual hydrophyte (aquatic therophyte)

Life Form - secondary

Perennial hydrophyte (perennial water plant)

Comment on Life Form

Normally annual but occasionally perennates (P & C 1994)

Woodiness

Herbaceous

Clonality - primary

Little or no vegetative spread

Clonality - secondary

Extensively creeping and rooting at nodes

Count of 10km squares in Great Britain: 1703

Count of 10km squares in Ireland: 551

Count of 10km squares in the Channel Isles: 8

Atlas Change Index: 0.1

Weighted Changed Factor: -17

Weighted Change Factor Confidence (90%)

24

JNCC Designations

NBNSYS0000002722

Atlas text references

Atlas (22d)
Hultén E, Fries M
1986.  Atlas of north European vascular plants north of the Tropic of Cancer. 3 vols.
Jalas & Suominen (1989)
Meusel H, Jäger E, Weinert E
1965.  Vergleichende Chorologie der zentraleuropäischen Flora. Volume 1. 2 vols.
Preston CD, Croft JM
1997.  Aquatic plants in Britain and Ireland.