Adder's-tongue spearwort  (Ranunculus ophioglossifolius)

For more on this species see the Plantlife species dossier:
http://www.plantlife.org.uk/uk/assets/saving-species/saving-species-dossier/Ranunculus_ophioglossifolius_dossier.pdf
For more on the 'Back from the Brink' Programme see:
http://www.plantlife.org.uk/html/conservation_bfb_programme.htm