PAREIRA BRAV A CINCHONA BARK. 191 



KING-WOOD, MARACAYBO-WOOD and MUSTAIBA-WOOD, all im- 1871. 

 ported from Brazil, and NICARAGUA-WOOD from Central America, 

 are of unknown botanical origin. 



THE ROSE-WOODS OF BRAZIL. There is still some doubt as to 

 the trees which yield the different varieties of this timber. 



IPECACUANHA. What is the plant which furnishes the large 

 Ipecacuanha root of New Granada? 



PAREIRA BRAVA. The plant affording the inert woody stems 

 which constitute the Pareira Brava of commerce, and which are 

 exported to Europe from Eio de Janeiro, has not been ascer- 

 tained, neither is the locality in which it grows accurately 

 known. The subject is deserving of investigation. 



CINCHONA BARK. In addition to the bark of Cinchona Tucu- 

 jensis, shipped at Puerto Cabello in Venezuela, there are others 

 less known botanically which are brought from the same port. 

 Some of these barks appear to be derived from varieties of Cin- 

 chona cordifolia, while others seem to belong to what is called 

 Quinquina rose d'Ocana. It would be interesting to have 

 authentic specimens of the flowering and fruit-bearing branches 

 of the trees, together with sections of the branches and trunk 

 (the bark being in situ), for comparison with the species described 

 by Karsten. 



The so-called False Cinchonas may be distinguished, according 

 to Dr. Weddell, by their capsules, which are generally large, and 

 having valves which separate from the apex towards the base. 

 The flowers are relatively large, and devoid of perfume. It 

 would be of some interest to have authentic specimens of the 

 barks of those trees belonging to the genus Buena (Cascarilla or 

 Laderibergia) in order to ascertain whether they contain alkaloids 

 or not. The barks ought to be accompanied by flowering 

 specimens. Some pounds of each bark would be required for 

 chemical examination. 



PARA RHATANY. This root, imported from Para in Brazil, is 

 described in Pharmaceutical Journal, i. (1870) 84. The plant 

 yielding it should be ascertained, for which purpose good speci- 

 mens, including entire roots, are requisite. 



