Synonyms for Johnny-jump-up (same or very similar meaning)
WordNet sense 1 (a common and long cultivated European herb from which most common garden pansies are derived):
heartsease, love-in-idleness, wild pansy, pink of my JohnWordNet sense 2 (common violet of the eastern United States with large pale blue or purple flowers resembling pansies):
bird's-foot violet, pansy violet, wood violetFrom the ODE community, based on WordNetadd/edit