http://www.botanical.com/botanical/mgmh/a/anegl037.html%7C[permanent dead link] Ed Greenwood 1995, Electronic version of A Modern Herbal: The Medicinal, Culinary, Cosmetic and Economic Properties, Cultivation and Folk-Lore of Herbs, Grasses, Fungi, Shrubs & Trees with their Modern Scientific Uses, by Mrs. M. Grieve, first published 1931.
