Divine Farmer Herbals - Materia Medica
- Information about a variety of herbs including actions, indications, energetics, and contraindications.
- http://www.divinefarmer.com/resources/index.html

Native Russian Adaptogens
- Articles related to the history and use of eastern european adaptogens, including rhodiola, chaga, leuzea, astragalus, aralia, eleutherococcus, and schisandra.
- http://www.keyherbs.org

Herbal Index Online
- Provides a list of remedies grouped by medicinal use, with guides for making soaps and tinctures.
- http://www.herbalindex.com/

Henriette's Herbal Homepage
- Facts on growing and using culinary and medicinal herbs, extensive collection of plant pictures, articles, and classic herbal texts.
- http://www.henriettesherbal.com/

University of Maryland Medical Center
- Herbal monograph database, listed by common name. Site includes medical actions, indications, available forms, precautions, and research support.
- http://www.umm.edu/altmed/ConsLookups/Herbs.html

Purple Sage Herbs
- A series of detailed monographs on the medicinal uses of over 150 plants.
- http://www.purplesage.org.uk/

Health And Age - Herb Index
- Alphabetical index of herbs by common name and botanical name. Site includes available forms, dosage, precautions, possible interactions, and supporting research.
- http://www.healthandage.com/html/res/com/ConsLookups/Herbs.html

University of Washington Medicinal Herb Garden
- Photos of hundreds of medicinal herbs, indexed by both botanical and common names
- http://nnlm.gov/pnr/uwmhg/

NPI Materia Medica
- Natural Products Industry Center database of traditional herb uses in alphabetical order.
- http://www.npicenter.com/library/herbal/materiamedica/

Medicinal Plants Of The South West
- South West United States botanicals and their medicinal uses.
- http://medplant.nmsu.edu/plantindex.htm

HerbMed
- An interactive, electronic herbal database which provides scientific data underlying the use of herbs for health. Includes human clinical studies, warnings on counterindications, and mechanisms of herb action.
- http://www.herbmed.org/

Holistic Online
- A-Z herb information including descriptions, safety, uses, and dosages.
- http://holisticonline.com/herb_home.htm

Herbal Side Effects and Warnings
- Information on the potential side effects of specific herbs.
- http://www.personalhealthzone.com/herbsafety.html

Herb Guide
- Guide sheets for dozens of common herbs: description, cultivation, harvesting, drying, and medicinal, culinary and craft uses.
- http://www.gardenguides.com/herbs/herb.htm

Botanical Name Index
- Herbal database from Australian Naturopathic Network, cross-referenced by common names: descriptions, habitat, actions, applications, dosages and cautions.
- http://www.ann.com.au/herbs/amateria.htm