View source for Ilex guayusa

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|genus=Ilex
|species=guayusa
|Temp Metric=°F
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|image=Upload.png
|image_width=240
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Ilex guayusa has the highest amount of caffeine of any plant in the world.

It sometimes used in Ayahuasca.

==Cultivation==


===Propagation===


===Pests and diseases===


==Varieties==


==Gallery==
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==References==
<www.runa.org> * Runa - Guayusa Organization based in Ecuador
<!--- xxxxx  *Flora: The Gardener's Bible, by Sean Hogan. Global Book Publishing, 2003. ISBN 0881925381  -->
<!--- xxxxx  *American Horticultural Society: A-Z Encyclopedia of Garden Plants, by Christopher Brickell, Judith D. Zuk. 1996. ISBN 0789419432  -->
<!--- xxxxx  *Sunset National Garden Book. Sunset Books, Inc., 1997. ISBN 0376038608  -->

==External links==
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