Plantago cordata is a species of flowering plant in the plantain family known by the common name heartleaf plantain. It is native to eastern North America, where it is distributed throughout eastern Canada and the eastern United States. Though it has a wide distribution, it is very localized, and populations have declined almost everywhere.This perennial plant grows up to half a meter tall. The fleshy leaf blades are oval to heart-shaped and borne on long petioles. The plant produces smaller leaves ...