An Herbal / Medical Dictionary
Aromatic and Medicinal Plants Index
Botanical.com - A Modern Herbal
David Winston: Tradition & Science
Dictionary of Natural Products
Dispensatory of the United States of America
Dr. Duke’s Phytochemical and Ethnobotanical Databases
Eastern Chinese Medicine Export Company
Eclectic Materia Medica, Pharmacology and Therapeutics
Germplasm Resources Information Network - GRIN
Hawaiian Ethnobotany Online Database
Healing Secrets of Aboriginal Bush Medicine
Henriette's Classic Herbal Texts
Herb Formulas for Clinic and Home
Herbal Medicine Materia Medica
History of the Vegetable Drugs of the Pharmacopeia of the United States (link is external) (1911)
King's American Dispensatory (1898)
Korean Traditional Knowledge Portal (KTKP)
Materia Medica Vegetabilis Vol.I
Materia Medica Vegetabilis Vol.II
Materia Medica Vegetabilis Vol.III
Medicinal Plants of North America
MedlinePlus - Drugs and Supplements
Memorial Sloan-Kettering Cancer Center
Natural Medicines Comprehensive Database
Navajo Indian Medical Ethnobotany (1941)
Northern Ontario Plant Database
Oro Verde Green Gold from Amazonia
Physio-Medical Therapeutics, Materia Medica and Pharmacy
Practitioner's Handbook of Materia Medica and Therapeutics
Raintree Tropical Plant Database
Report on the Indigenous Medical Botany of Massachusetts
Samoan Medicinal Plants and Their Usage
Society for Research and Initiatives for Sustainable Technologies and Institutions
Southwest School of Botanical Medicine
Sturtevant's Edible Plants of the World (1919)
The Biota of North America Program North American Vascular Flora (BONAP)
The Encyclopedia of New Zealand: Medicinal use of plants
The International Plant Names Index
The Japanese Pharmacopoeia, 14th Edition
Traditional Knowledge Digital Library – India (TKDL)
University of California Online Archive of American Folk Medicine
Western United States Flora Checklists
WHO: Medicinal Plants in the South Pacific
World Health Monographs on Selected Medicinal Plants, Volume I
World Health Monographs on Selected Medicinal Plants, Volume II