Comfrey

Genus & Species: Symphytum officinale
Common Names: Comfrey, Boneset, Knitbone, Slippery-root, Quaker Comfrey
Overview: Comfrey is a flowering perennial with stalks 2-3 ft. high lined with broad leaves that are covered in many small and sticky hairs. These hairs may stimulate itching when touched, so gloves are recommended when gathering. This potent plant is a member of the Borage family, as such, the two plants share many medicinal properties while still remaining distinct in their uses. Comfrey is native to Europe and many parts of Asia, but because of its impressive medicinal qualities it has naturalized to many parts of the world. [1] A constituent in comfrey called allantoin has been found to promote granulation and cell formation, accelerating the body’s healing process on a cellular level. [2]
Therapeutic Properties: Astringent, anti-inflammatory, analgesic, vulnerary, demulcent, expectorant [3]
Typical Uses: When applied topically, comfrey can become an indispensable part of anyone’s herbal first-aid kit. For thousands of years this fuzzy plant has been revered for its ability to heal broken bones, lesions, bruises and inflammatory conditions. Comfrey can also quickly soothe sore and swollen joints thanks to its anti-inflammatory and analgesic actions. Comfrey is often used as a poultice, where the herb is wrapped in a cloth, steeped in hot water, and then repeatedly pressed onto the injured area of the body. Alternatively, comfrey can be infused into a salve or carrier oil for more convenient application. [1,2]

References:

1. Comfrey | Botanical A Modern Herbal 

2. Comfrey Uses and Remedies | Herbal Academy

3. Comfrey: A Clinical Overview | PubMed Central®