Ranunculus ophioglossifolius

Tracheophyta MagnoliopsidaRanunculaceaeRanunculusRanunculus ophioglossifolius


An annual found in a highly specialised marshy habitat. It requires winter inundation, bare, wet mud for seedling establishment, reduced summer water levels and low competition. The substrate at the two extant sites is base-rich Lias clay, with most water input from rain. Lowland.



World Distribution

European Southern-temperate element.

Broad Habitats

Standing water and canals

Light (Ellenberg): 7

Moisture (Ellenberg): 8

Reaction (Ellenberg): 7

Nitrogen (Ellenberg): 5

Salt Tolerance (Ellenberg): 0

January Mean Temperature (Celsius): 4.9

July Mean Temperature (Celsius): 16.5

Annual Precipitation (mm): 824

Height (cm): 40

Perennation - primary


Life Form - primary

Therophyte (annual land plant)



Clonality - primary

Little or no vegetative spread

Count of 10km squares in Great Britain: 4

Count of 10km squares in Ireland: 0

Count of 10km squares in the Channel Isles: 2

Plantatt Conservation Status


JNCC Designations


Atlas text references

Atlas (22b)
Hultén E, Fries M
1986.  Atlas of north European vascular plants north of the Tropic of Cancer. 3 vols.
Jalas & Suominen (1989)
Marren PR
1999.  Britain's rare flowers.
Wigginton MJ
1999.  British Red Data Books. 1. Vascular plants, edn 3.