An official website of the United States government.

The .gov means it’s official.
Federal government websites always use a .gov or .mil domain. Before sharing sensitive information online, make sure you’re on a .gov or .mil site by inspecting your browser’s address (or “location”) bar.

This site is also protected by an SSL (Secure Sockets Layer) certificate that’s been signed by the U.S. government. The https:// means all transmitted data is encrypted — in other words, any information or browsing history that you provide is transmitted securely.

Dr. Duke's Phytochemical and Ethnobotanical databases facilitate in-depth plant, chemical, bioactivity, and ethnobotany searches using scientific or common names. Search results can be downloaded in PDF or spreadsheet form. Of interest to pharmaceutical, nutritional, and biomedical research, as well alternative therapies and herbal products.


Key: A= Biological Activity C= Chemical E= Ethnobotany Plant P= Plant S= Syndrome U= Ethnobotany Use
P Dioscorea alata (Greater Yam; Winged Yam)
P Dioscorea bulbifera (Air Potato; Potato Yam)
P Dioscorea composita (Barbasco)
P Dioscorea pentaphylla (Mountain Yam)
P Dioscorea sp. (Wild Yam)
P Dioscorea villosa (Wild Yam)
E Dioscorea japonica (Huang Tu; Yama-No-Imo; T'U Yu; Shan Yao; Yeh Shan Yao)
E Dioscorea bulbifera (Niga-Kashu; Huang Yao Zi; Yam)
E Dioscorea sativa (Ch'Uan Pei Hsieh)
E Dioscorea tokoro (Oni-Dokoro)
E Dioscorea villosa (Yabani Hindelmasi)
E Dioscorea hispida (Gadong; Bitoele; Gadung; Sijapa; Nami)
E Dioscorea sp (Name Amarillo; Yam; Huang Yao Tzu; Shu Yu)
E Dioscorea quinqueloba (Shan Pei Hsieh; Shu Yu Chiu; Kuo Shan Lung)