{:en}Britain’s tallest thistle is visited by at least 80 species of bee, butterfly and fly. You'll find marsh thistle on the damper meadows of Waun Las NNR.{:cy}Mae gan ysgallen dalaf Prydain gymaint o baill mae o leiaf 80 rhywogaeth o wenwyn, ieir bach yr haf a chlêr yn ymweld â hi.{:}