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.

from: Wikipedia

from: Wikipedia