Viola riviniana Reichb.

Dog Violet

A stoloniferous perennial considered closely related to V sylvestris. Leaves heart-shaped, more or less smooth, margins round-toothed. Flowers up to 18 mm wide on long erect stems, clear blue with a blunt creamy white spur to 6 mm long; spring to summer.

N Africa, Europe (woodland)

Source: McLeod, J. (1997). Violaceae. In: Spencer, R.. Horticultural Flora of South-eastern Australia. Volume 2. Flowering plants. Dicotyledons. Part 1. The identification of garden and cultivated plants. University of New South Wales Press.

Distribution map
kingdom Plantae
phylum   Tracheophyta
class    Magnoliopsida
superorder     Rosanae
order      Malpighiales
family       Violaceae
genus        Viola L.