Comfrey Symphytum Officinale
The yellowish or purplish flowers of the Comfrey occur on stems 2-3 ft. tall along roadsides in Colorado at 5000 ft. They come into bloom in early summer and continue throughout the summer. The plant is medicinal, yielding an astringent as well as an emollient. The leaves when young form a good green vegetable and are not infrequently eaten by country people where the plant abounds. They are also sometimes used to flavor cakes and other articles of food, but when fully grown they become coarse and unpleasant to the taste.