Paton, W.D.M.; Crown, J.: Cannabis and its Derivatives, Oxford University 
Press, London, 1972. 
Payne, R.B.: Nutmeg intoxication. N. Engl. J. Med. 269:39, 1963. 
Pelt, J.-M.: Drogue et Plantes Magiques, Horizons, Paris, 1971. 
Pinkley, H.V.: Plant admixtures to ayahuasca, the South American hallu- 
cinogenic drink. Lloydia 32:305-314, 1969. 
Plowman, T.: Four new Brunfelsias from northwestern South America. 
Botanical Museum Leaflets, Harvard University 23:245-272, 1973. 
Plowman, T.; Gyllenhaal, L.O.; Lindgren, J.E.: Latua publiflora: magic plant 
from southern Chile. Botanical Museum Leaflets, Harvard University 
23:61-92, 1971. 
Poisson, J.: Présence de mescaline dans une Cactacée peruvienne. Ann. 
Pharm. Fr. 18:764—765, 1960. 
Poisson, J.: Note sur le “natem”, boison toxique peruvienne et ses alcaloides. 
Ann. Pharma. Franc. 23:241-244, 1965. 
Pope, H.C., Jr.: Tabernanthe iboga: an African narcotic plant of social 
importance. Econ. Botany 23:174-184, 1969. 
Popelak, A.; Lettenbauer, G.: The mesembrine alkaloids. Alkaloids 9:467-482, 
1967. 
Porter, D.M.: The taxonomic and economic uses of Peganum (Zygophyl- 
laceae). Unpublished Manuscript, Botanical Museum, Harvard Univer- 
sity, Cambridge, Mass, 1962. 
Prance, G.T.: Ethnobotanical notes from Amazonian Brazil. Econ. Botany 
26:221-237, 1972. 
Quijano, L.; Calderén, J.S.; Rios, T.: Los componentes de la Calea Zaca- 
techichi. Estructura de los caleochromenos A y B. Rev. Latinoamer. 
Quim. 8:90-93, 1977. 
Quijano, L.; Romo de Vivar, A.; Rios, T.: Los componentes de la Calea 
Zacatechichi. Estructura de las caleinas A y B. Rev. Latinoamer. Quim. 
9:86-89, 1978. 
Quijano, L.; Romo de Vivar, A.; Rios, T.: Revision of the structures of caleine 
A and B, germacranolide sesquiterpenes from Calea Zacatechichi. 
Phytochemistry 18:1745-1747, 1979. 
Quimby, M.W.: Botany of Cannabis sativa. Arch. Invest. Med. (Mexico) 5 
(Suppl.1):127-134, 1974. 
Raffauf, R.F.: A Handbook of Alkaloids and Alkaloid-containing Plants, 
Wiley-Interscience, New York, 1970. 
Rasmussen, K.E.: Quantitative determination of heptacosane and nonacosane 
in Norwegian-grown Cannabis plants. Medd. Norsk Farm. Selsk. 
37:128-135, 1975. 
Razdan, R.K.: Recent advances in the chemistry of cannabinoids. Progr. Org. 
Chem. 8:78-101, 1973. 
Razdan, R.K.; Dalzell, H.C.: Drugs derived from cannabinoids. 6. Synthesis 
of cyclic analogues of dimethylheptylpyran. J. Med. Chem. 19:719-721, 
1976. 
Razdan, R.K.; Handrick, G.R.; Dalzell, H.C.; et al.: Drugs derived from 
cannabinoids. 4. Effect of alkyl substitution in sulfur and carbocyclic 
analogs. J. Med. Chem. 19:552-554, 1976a. 
Razdan, R.K.; Harris, L.S.; Pars, H.G.; et al.: Studies on Cannabis constitu- 
ents and synthetic analogues. In: Chemistry of Cannabis. C.R.B. Joyce 
205 
