Peter's Mountain mallow

This plant is a perennial herb producing an erect stem up to 1.5 meters tall and bearing pink flowers. The leaves are divided into wide, pointed lobes and the herbage is hairy. The leaves are approximately 5–10 cm wide and have serrated leaf margins. The species is able to produce 15 to 20 odorless flowers. The flowering period is from late June to August. The whole flower is about 2 inches in diameter. The flowers of I. corei have five obovate and asymmetric petals that are nearly 2.5 cm long and have colors ranging from pale pink to deep rose. Iliamna corei produces schizocarps, which contain seeds that disperse once the schizocarps are dry. The seeds are about 12 mm in diameter, and they contain about 2-3 dark brown, puberulent seeds that are about 2.5 mm in length.

There is one small population of this plant located on Peters Mountain in western Virginia. In 1990, this population contained only three or four individuals. The plants grow on nooks in a sandstone outcrop that have accumulated a small amount of soil. The population is so small that remaining individuals are inbred. Conservation efforts are focused on increasing the plant's numbers to improve genetic diversity. It grows at an altitude of around 3000 feet above sea level. This plant species is found near the ridgeline of the mountain known as the Narrows, specifically on Peters Mountain in Giles County. The surrounding vegetation where I. corei is found is characterized by oak-dominated forests, along with other hardwood and pine trees. These plants have adapted to thrive in dry soil due to their ecological niche, as they are unable to compete with less fire-tolerant hardwood species. This ecological adaptation has led to their preference for these dry soil environments as their primary habitat. The I. corei is known as a food source for animals such as deer and compete with other vegetation such as the Canadian leaf-cup (Polymnia canadensis).