Mapacho: Sacred Tobacco
- Use of Nicotiana in Amazonia.
- http://www.biopark.org/peru/mapacho.html

The Filthy Weed
- History of human use of Nicotiana.
- http://www.botgard.ucla.edu/html/botanytextbooks/economicbotany/Nicotiana/

Tobacco
- Article on Nicotiana and its use.
- http://www.siu.edu/~ebl/leaflets/tobacco.htm

Nicotiana tabacum
- Photograph of flowering stem.
- http://www.dipbot.unict.it/orto/0182-1.html

Nicotiana tobaccum
- Closeup of flower of N. tabacum (labelled as tobaccum).
- http://www.botany.hawaii.edu/faculty/carr/images/nic_tob.jpg