Cannabis sativa L. Save
Section from the 1983 Handbook of Energy Crops covers the uses, description, germplasm, distribution, ecology, cultivation, harvesting, and other aspects of hemp and its production. Includes references.
http://www.hort.purdue.edu/newcrop/du...   

Cannabis sativa L. Save
Image from Köhler's Medicinal Plants.
http://www.mobot.org/MOBOT/research/l...   

Cannabis sativa L. Save
Image from Botanical Department - University of Catania.
http://www.dipbot.unict.it/orto/1037-...   

Ethnobotanical Leaflets - Cannabis: The Hemp Plant Save
A publication of Southern Illinois University Herbarium by Ernest G. Walker, Jr. on Cannabis sativa, Cannabis indica, and Cannabis ruderalis. With references.
http://www.siu.edu/~ebl/leaflets/hemp...   

Flora of North America - Cannabis sativa Linnaeus Save
Harvard University Flora Online. Includes description, line drawings, and U.S. distribution map.
http://flora.huh.harvard.edu:8080/flo...   

Hemp: A New Crop with New Uses for North America Save
By Ernest Small and David Marcus. Reprinted from: Trends in new crops and new uses. 2002. p. 284–326. J. Janick and A. Whipkey (eds.). ASHS Press, Alexandria, VA. One of the best documents about Cannabis on the Web. (PDF file 14.1MB)
http://www.hort.purdue.edu/newcrop/nc...   

Plant Profile for Cannabis sativa Save
Information from the USDA Plants database.
http://plants.usda.gov/java/profile?s...   

Wisconsin Vascular Plants: Species Details Save
Cannabis sativa L. hemp, Indian hemp.
http://www.botany.wisc.edu/wisflora/s...   

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