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Mapacho: Sacred Tobacco
http://www.biopark.org/peru/mapacho.html
Use of Nicotiana in Amazonia.
Nicotiana tabacum
http://www.dipbot.unict.it/orto/0182-1.html
Photograph of flowering stem.
Nicotiana tobaccum
http://www.botany.hawaii.edu/faculty/carr/images/nic_tob.jpg
Closeup of flower of N. tabacum (labelled as tobaccum).
The Filthy Weed
http://www.botgard.ucla.edu/html/botanytextbooks/economicbotany/Nicotiana/
History of human use of Nicotiana.
Tobacco
http://www.siu.edu/~ebl/leaflets/tobacco.htm
Article on Nicotiana and its use.