Japanese marbled cranesbill

G. shikokianum is a clump-forming herbaceous perennial, 20-40cm high, with deciduous, five-lobed or seven-lobed leaves, 5-10cm across, the lobes divided and toothed, marbled matt light and mid green above and shiny light green below, and open-funnel-shaped soft pink flowers, 2.5-3cm across, with large white centres and a network of fine purple veins, from midsummer to early autumn