An alkaloid —acnistine—has been reported for the genus 
(Raffauf: loc. cit. (1970)). Acnistus arborescens, the leaves of 
which have yielded withaferin A and withacnistin, has been used 
as an anti-cancer plant (Kupchan, M. e¢ al.: Journ. Am. Chem. 
Soc. 87 (1965) 5805; Journ. Org. Chem 34 (1969) 3858). Studies 
have indicated that this widespread tropical American species has 
a number of chemical races, for other analyses of the same species 
have yielded other compounds (Barata, L. et al.: Chem. Abstr. 75 
(1971) 115901). 
Cestrum loretense Francey in Candollea 6 (1935) 225. 
CoLomBIA: Comisaria del Amazonas, Trapécio Amazonico, Rio Loretoyacu. 
“Bush. Flowers greenish yellow.” September-November, 1944. R. E. Schultes 
6018. 
Amongst the Tikuna Indians, Cestrum loretense is reputedly 
toxic. 
The alkaloids parquine and solasodine are reported from this 
genus (Raffauf: loc. cit. (1970) ). Saponines and tannins have been 
reported from Cestrum (Gibbs: loc. cit. 3 (1974) 1764). 
Cestrum ochraceum Francey in Candollea 6 (1935) 343. 
CoLomBIA: Comisaria del Putumayo, Valley of Sibundoy. “Flowers blue- 
black.” May 29, 1946. R. E. Schultes et M. Villarreal 7658. Same locality. “Tree 
5 m tall. Strong narcotic odor. Corolla cream to purplish brown. Fruit bluish.” 
November 11, 1968. 7. Plowman 2006. 
The Indian medicine men of Sibundoy value the bluish or 
purplish fruits of Cestrum ochraceum in the form of a tea to 
provoke intensive sweating in the treatment of rheumatic pains. 
The patient is said to suffer a slight delirium if too much of the 
preparation be taken. 
Cestrum reflexum Sendtner ex Martius var. densiflorum Francey 
in Candollea 6 (1935) 267. 
CoLomBIA: Comisaria del Amazonas, Rio Putumayo, near mouth of Rio 
Igaraparana. June 18, 1942. R. E. Schultes 3994. 
The Witoto Indians of the Rio Igaraparana consider the leaves 
and roots of this plant to be virulently toxic. 
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