The daily weeder, a web site that e mails regular gardening tips,
http://www.dailyweeder.com/
gave a link to the site, http://www.piam.com/mms_garden/hort1.html
with excellent information on medicinal plants and there uses, well worth a look if you are interested in this subject.

Hortus Medicus: The Medicinal Herb Garden
Originator and Designer, Shirley MacIver, MD

Though all of the MMS gardens share the two themes of nature and medical history and tradition, Hortus Medicus is considered the signature garden. Every medieval European university that had a medical school had a medicinal plant garden tended by medical students. Using the academic lingua franca of that time, these gardens were called Hortus medicus, Latin for the medicinal garden.

The MMS Hortus Medicus features plants with known medicinal values as well as those that do not have or have not yet been scientifically proven to have medicinal value. There are more than sixty varieties of plants growing in Hortus Medicus and many more scattered throughout the MMS gardens.

List of Medicinal Plants

Achillea millefolium
Yarrow Alchemilla vulgaris
Lady's Mantle Alcea rosea
Hollyhock Allium sativum
Garlic
Allium Schoenoprasum, Chives
Allium tuberosum
Garlic Chives Althea officinalis
True Marshmallow Anethum graveolens 'Fernleaf'
Dill Anthemis nobilis
Roman Chamomile
Aquilegia canadensis
Columbine Asclepias tuberosa
Butterfly Weed Artemisia vulgaris
Mugwort Borago officinalis
Borage
Calamintha ascendens
Mountain Balm Calendula officinalis
Pot Marigold Chamomilla recutita
German Chamomile Chrysanthemum parthenium
Feverfew
Colchicum autumnale
Autumn Crocus Convollaria majalis
Lily-of-the-valley Digitalis ambigua
Perennial Foxglove Digitalis lanata
Grecian Foxglove
Digitalis purpurea
Foxglove Echinacea purpurea
Purple Coneflower Foeniculum vulgare
Fennel Hepatica acutiloba
Sharp Lobed Hepatica
Helichrysum italicum
Immortelle or Curry Plant Hypericum perforatum
St. John's Wort Hyssopus officinalis
Hyssop Inula helenium
Elecampane
Lavendula officinalis
Lavender Levisticum officinale
Lovage Liatris spicata
Gayfeather Malva sylvestris
Common Mallow
Marrubium vulgare
Horehound Melissa officinalis
Lemon Balm Mentha piperita
Peppermint Monarda didyma
Bee Balm
Nepeta cataria
Catnip Ocimum basilicum
Sweet Basil Oenothera biennis
Evening Primrose
Paeonia officinalis 'Alba Plena'
Peony Paeonia officinalis 'Mollis'
Peony Papaver rhoeus
Corn Poppy Papaver somniferum
Poppy
Polemonium reptans
Jacob's Ladder Pulmonaria officinalis
Lungwort Rosa gallica officinalis Apothecary Rose Rosmarinus officinalis
Rosemary
Ricinus cummunis 'rubra'
Castor Bean Plant
Ruta graveolens
Rue

Salvia officinalis
Sage Salvia sclarea
Clary Sage Sanguisorba officinalis
Salad Burnet Sedum purpureum
Live-forever
Sempervivum tectorum
Hen-and-chicks Solidago canadensis
Goldenrod
Stachys byzantina
Lamb's Ears Stachys officinalis
Betony
Symphytum officinale
Comfrey Tanacetum vulgare
Tansy Thymus vulgaris
Thyme
Tropaelum majus
Nasturtium Vaccinium augustifolium
Lowbush blueberry Valeriana officinalis
Garden Heliotrope Verbascum thapsus
Mullein
Veronica officinalis
Speedwell Viola tricolor
Johnny-jump-up Zingiber officinale
Ginger