29 



withstanding the analogy of the names, the 

 cusp a with the cuspare. This last not only ve- 

 getates in the missions of the Rio Carony, but 

 also to the west of Cumana, in the gulf of Santa 

 Fe. It furnishes the druggists of Europe with 

 the famous cortex angustura, and forms the ge- 

 nus bonplandia, described by Mr. Willdenouw 

 in the Memoirs of the Academy of Berlin*, 

 from notes communicated to him by us. 



It is singular, that, during our long abode on 

 the coast of Cumana and the Caracas, on the 

 banks of the Apura, the Oroonoko, and the Rio 

 Negro, in an extent of country of forty thou- 

 sand square leagues, we never met with one of 

 those numerous species of cinchona, or exoste- 

 ma, which are peculiar-}- to the low and warm 

 regions of the tropics, especially to the archipe- 

 lago of the West India Islands. Yet we are 

 far from affirming, that, throughout the whole 



* An. 1802, p. 24. 



+ To the cinchonas of inferior regions (which are almost 

 all exostemas, corollis glabris, tilanientis longe exsertis, e 

 bassi tubi nascentibus, seminibus margine integro cinctis) 

 belong c. longiflora of JLambert, c. caribaea, c. angustifolia of 

 Swartz, c. lineata of Wahl, c. philippica of Nee. See my 

 botanical and physical Essay on the Cinchonas of the New 

 Continent, in the Berl. Magazin Naturforsch. Freunde, 1807, 

 p. 108. The genus exostema was described for the first 

 time in our Equinoctial Plants, vol. 1, page 131, by Messrs. 

 Richard and Bonpland. (Schrader, Journ. fuer die Bofanik 9 

 B.l, p. 358.) 



