Common dog-violet

Its leaves are heart-shaped with rounded teeth and are usually hairless. It has two slender bracts, and six spear-shaped, lobed sepals. There are five overlapping petals with a backward-pointing spur. After fertilization, the spur splits into three pieces, revealing the egg-shaped seeds. Toothed stipules can be found at the base of the plant.
It is a perennial herb of woodland ridges, grassland and shady hedge banks. It is found in all soils except acid or very wet.