woolly cranesbill

G. erianthum is a clump-forming herbaceous perennial, 45-60cm high, with deciduous, seven-lobed or nine-lobed pale green leaves, 5-20cm across, colouring well in autumn, and sideways-facing, almost flat, saucer-shaped light to deep violet-blue flowers, 2.5-4cm across, with darker veins, the veins sometimes feathered, from late spring to midsummer, and often once or twice more in summer or early autumn