Campanula parryi produces similar flowers and inhabits the same regions as the more widespread
campanula rotundifolia (harebell) but is distinguished, amongst other factors, by the thin green sepals underneath the flowerhead, which are much longer, projecting out beyond the petals when viewed from above. The flower has five fused purple petals, with pointed tips, centered on five thin brownish anthers and a larger purple stigma which splits into three prongs when mature. Flowers grow singly and point upwards or nod slightly sideways, unlike those of harebell which hang down and form small clusters.