Devil's Claw (Harpagophytum procumbens)

Gravel root is an erect perennial growing to 5 feet with whorls of pointed oblong leaves and clusters of purple-pink florets. Native to eastern North America, the root is unearthed in autumn. The plant's alternative name, Joe Pye weed, honors a Native American named Joe Pye. The root was listed in the Pharmacopoeia of the United States from 1820 to 1842.

Pipsissewa (Chimaphila umbellata) is an evergreen plant about 8 in (20 cm) tall, with glossy, wedge-shaped leaves and small, pinkish-white flowers in flat-topped clusters. It is a close relative of uva ursi.

Wintergreen (Gaultheria procumbens) is a low-lying evergreen shrub, reaching about 6 in (15 cm), with oval leathery leaves, small bell-shaped flowers, and bright red berries. It is known primarily for its oil, which contains methyl salicylate.

Black cohosh (Cimicifuga racemosa) is a tall herbaceous perennial, growing up to about 8 ft (2.5 m) with creamy-white flower spikes. Its thick, knobby root has a bitter, acrid taste and a distinctive odor. Native Americans used the root for a variety of conditions, including menstrual cramps, kidney ailments and sore throat; NCCIH says research has focused on menopause symptoms, and there aren't enough reliable data on other uses.

Blue cohosh is an upright perennial herb reaching 3 feet in height, with large three-lobed leaves, yellow to purple flowers, and striking blue berries. It grows wild in much of eastern North America from Manitoba to Alabama, preferring woodland valleys and damp, north-facing slopes. The name 'cohosh' comes from the Algonquin language, and the plant was a popular remedy among many Native American tribes.

Corydalis is a small herbaceous perennial growing to 8 inches with narrow leaves and pink flowers. Native to Siberia, northern China, and Japan, it is commonly cultivated in eastern and northeastern parts of China. Propagated from seed in early spring or autumn, the rhizome is harvested in late spring and early summer when the aerial parts have withered. It has been part of Chinese herbal medicine since at least the 8th century.

Biennial herb growing to 8 in (20 cm). Has red blotches on stem, crinkled lance-shaped leaves, 4-petaled yellow flowers, and elongated seed capsules.

Juniper (Juniperus communis) is a coniferous shrub or small tree that may reach about 49 ft (15 m). It bears needle-like leaves, male and female flowers, and spherical blue-black “berries” (actually seed cones) rich in potent volatile oils. Juniper berries have been used for centuries as a flavoring, notably in gin.