than species). My circumscription of C. indica is narrower than 
that which constitutes C. sativa ssp. indica (Lam.) Small & 
Cronquist. Thus, it should be noted that studies based on material 
supplied by Small (such as Clark and Bohm, 1979) would reflect 
his wider interpretation of C. indica as a subspecies of C. sativa. 
The genus Cannabis might best be described on morphology 
rather than chemical composition as having three closely related 
but distinct species: C. sativa, C. indica, and C. ruderalis. One 
species, C. sativa, itself is extremely variable, having been 
domesticated by early man for use as food, fibre, oil, medicine, 
and hallucinogen. 
LITERATURE CITED 
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Evolution (D. H. Valentine, ed.), Academic Press, New York. 
Clark, M. N. and B. A. Bohm. 1979. Flavonoid variation in Cannabis L. Bot. J. 
Linn. Soc. 79: 249-257. 
Emboden, W. A. 1974. Cannabis — a polytypic genus. Econ. Bot. 28: 304-310. 
Emboden, W. A. 1977. A taxonomy of Cannabis. Taxon 26: 110. 
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in speciation. Bull. Torr. Bot. Club 86: 296-299. 
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