Baldellia ranunculoides
Tracheophyta
›Magnoliopsida›Alismataceae›Baldellia›Baldellia ranunculoides
Ecology
This perennial herb is restricted to habitats at the water`s edge, where potential competitors are restricted by fluctuating water levels, disturbance or moderate exposure. It usually grows in mildly to strongly calcareous or brackish waters, over a range of organic or inorganic substrates. 0-320 m (W. of Libanus, Brecs.).
Status
Native
Trends
The decline of B. ranunculoides was already apparent in the 1962 Atlas, and can be attributed to the destruction of small waters and the colonisation of others by more competitive species once grazing ceases. Since then it has declined further in England but seems stable in the west of its range.
World Distribution
Suboceanic Southern-temperate element.
© C. Eccleston, IWNHAS
Bembridge Marsh
© C. Eccleston, IWNHAS
Bembridge Marsh
© C. Eccleston, IWNHAS
Isle of Wight
© M. Cotterill, IWNHAS
Broad Habitats
Light (Ellenberg): 8
Moisture (Ellenberg): 10
Reaction (Ellenberg): 6
Nitrogen (Ellenberg): 2
Salt Tolerance (Ellenberg): 0
January Mean Temperature (Celsius): 4.1
July Mean Temperature (Celsius): 15.1
Annual Precipitation (mm): 974
Height (cm): 20
Length: 20
Perennation - primary
Perennial
Life Form - primary
Perennial hydrophyte (perennial water plant)
Woodiness
Herbaceous
Clonality - primary
Little or no vegetative spread
Clonality - secondary
Far-creeping by stolons in illuminated medium
Count of 10km squares in Great Britain: 536
Count of 10km squares in Ireland: 344
Count of 10km squares in the Channel Isles: 6
Atlas Change Index: -1.08
JNCC Designations
NBNSYS0000002099
Comment on Clonality