Common Plants and their Uses in Medicine was written by Richard Lawrence Hool, F.N.A.M.H., in 1922. Barberry. Bur-Marigold. Burdock. Chickweed. Coltsfoot. Hyssop. Lobelia. Marsh Gentian. Meadow-sweet. Mistletoe. Purple Loosestrife. Sea Holly. Yarrow. Book Navigation ‹ National Association of Medical Herbalists of Gt. Britain. up Barberry. ›