Brunnera macrophylla (Siberian bugloss, heartleaf) is a species of flowering plant in the family Boraginaceae, native to the Caucasus. It is a hardy, rhizomatous, herbaceous perennial, that can reach from 12 to 18 inches (30 to 45 cm) in height, and carries basal, simple cordate leaves on slender stems. Sprays of small blue flowers, similar to tho...