Yellow Flowers
CREEPING WOOD SORREL (Oxalis corniculata)
Small Flowering Plants

Family: Wood sorrel 

Location:  Weed in open areas 

Season: Spring to fall 

Flower: Yellow, small clusters. Flower under " wide, 5 regular parts

Leaves: Alternate, divided, leaflets in 3s, leaflets heart shaped, notched at tip.

Other facts: Creeps by underground stem.