DATURAS — S AFFORD. 



565 



Huantuc, and that its seeds are used to make the fermented chdcha 

 of the natives more intoxicating. Its pollination, he states, is ac- 

 complished in certain localities through the agency of a humming 

 bird, Docimastes ensifer. 



Fig. 13. — Leaves of the (a) red-flowered Datura sanguinca Ruiz and Pavon 

 and (b) D. rosei Safford. 



Specimens of the true Datura sanguinea Euiz & Pavon, quite dis- 

 tinct from the woolly-leaved plant, so called by Lagerheim and other 

 authors, were collected in the Peruvian Andes in 1915 by Mr. O. F. 

 Cook, to whom I am indebted for much valuable information regard- 

 ing plants belonging to this genus. It grows in the form of a tree 



