Ranunculus prasinus ( Ranunculaceae) not in the Student's
Buttercup) is a small, very rare rosette herb. It is
only known from 5 lagoons near Tunbridge in the Midlands. The leaves
sparsely covered in hairs and are trifoliate, with each leaflet
often trilobed. They are grass green and quite thin. It has a
single, yellow flower about 10-12 mm wide on a stalk above the
leaves. This species is very similar to the widespread aquatic or
semi-aquatic species, R.
amphitrichus, but the flowers have pale yellow, hairless
sepals and leaves are thinner and paler.