Trillium Ridge Flora and Fauna
Viola odorata
Location: in lawn, largely near serviceberry
These form a carpet of purple and white in spring, survive year to year in lawn, not bothered by the occasional application of weed killer when the dandelions get out of hand
Link photo  
Genus: Violaceae (Violets)
Family: Scrophulariaceae (figworts, scrofulaires)
Order: Lamiales (lamiales)
Class: Magnoliopsida (Dicots)
Phylum/Division: Magnoliophyta (Flowering plants)
Kingdom: Plantae (Plants)