Arrowleaf or heartleaf ginger, also known as little brown jug (Hexastylis arifolia). You can see the arrow and heart inspiration, but what’s with the jugs?
As in wild ginger (Asarum canadense), a related plant, the action is at ground-level. The little brown jugs (LBJs?) are flowers that start out green and age brown. While these particular specimens were found in the native plant section of the NYBG, they are more specifically native to the SE, getting as north as Virginia and as west as Kentucky. Ants evidently disperse the seeds.
(Remember, these aren’t related to the ginger root you eat.)
Backyard and Beyond 