Obolaria is a genus of flowering plant in the gentian family Gentianaceae.

It is monotypic, being represented by the single species Obolaria virginica, commonly known as Virginia pennywort.

[1] It is native to the eastern United States,[2] where it is found in nutrient-rich forests.

It is believed to be mycoheterotrophic, getting much of its nutrients though a symbiotic relationship with fungi, instead of through its small purplish-green leaves.

It is often difficult to locate due to its small stature, and tendency to be buried under leaf litter.