Sheep Sorrel is also called sour-grass because of it's sharp taste. This is an indicator plant in that it tolerates acid soils and is seldom found in good soil. A dioecious plant, the male and female flowers have slightly different colors. A difficult plant to control except by good cultural practices. Usually found as a weed in lawns or fallow situations such as rights-of-way.
Photo by Dr. John Meade, weed scientist emeritus
Rutgers NJAES Cooperative Extension