A leaf of the Lungwort Pulmonaria opal.
The scientific name Pulmonaria is derived from Latin pulmo (the lung). In the times of sympathetic magic, the spotted oval leaves of P. officinalis were thought to symbolize diseased, ulcerated lungs, and so were used to treat pulmonary infections. The common name in many languages also refers to lungs, as in English "lungwort" and German "Lungenkraut". In some East European languages, the common name is derived from a word for honey, e.g. Russian "medunitza" and Polish "miodunka".
English colloquial names include Lungwort, Soldiers and Sailors, Spotted dog, Joseph and Mary, Jerusalem Cowslip, Bethlehem Sage.
The inflorescence is a terminal scorpioid cyme, with bracts. Lungwort flowers are heterostylous, with two distinct forms of flower within each species; those with short stamens and long styles ("pin" flowers) and those with long stamens and short styles ("thrum" flowers), with the former usually being larger and more showy. The calyx is hairy, 5-lobed, tubular or funnel-shaped, enlarging as the fruit ripens.
The corolla is funnel-shaped and consists of a long, cylindrical tube and a limb with five shallow lobes. Within the corolla throat, five tufts of hairs alternate with the stamens to form a ring. The colour of corolla varies from purple, violet or blue to shades of pink and red, or sometimes white. The colour of the flower in bud is often pink, which then changes as the flower matures. The stamens and style are included within the corolla and not protruding.
Description taken from Wikipedia: http://en.wikipedia.org/wiki/Pulmonaria