Garlic Mustard
Alluarua officinalis

• Family: Mustard
• Flower: Clusters of small white flowers, regular, 4 petals
• Leaves: Triangular with course teeth, on long stalks.
• Size: Flowers 1/4-1/3" across; plant 18-36" high
• Habitat: Open woods and roadsides
• Blooms: April-June

So named because the leaves have a distinct garlic odor when crushed. Another invasive alien.