Delicate, nodding blue bells of 'Harebells' are one of the prettiest flowers on the grasslands, hillsides, sand dunes, and cliffs. July---September. Harebells grow on dry, mostly undisturbed, ground, but are tolerant of all kinds of habitats. Regularly visited by bumblebees and honey bees, providing an autumnal source of nectar for these insects. In Scotland, this is often the plant referred to as 'bluebell'.
Ten of Britain's rarest wild flowers – in pictures
UK wild flowers: Fritillary (Fritillaria meleagris ) This is maybe the most exotic flower, its chequered bells look like stained glass when the light shines through them, each pale cell outlined by a darker frame. The reason fritillaries are now so rare is that, as bulbs, they can be destroyed by just one ploughing of a site where they may have been for centuries. Photograph: Jonathan Buckley