Lysimachia filifolia, a member of the Primulaceae (primrose) family, is a small shrub 15 to 50 cm (0.5 to 1.6 ft) tall. The linear leaves measure 1.5 to 5.4 cm (0.6 to 2.1 in) long and 0.3 to 1.8 mm (0.01 to 0.07 in) wide and are usually alternately arranged. They are single-veined and sparsely...