22 ON THE PLANTS CULTIVATED OR NATURALIZED 
List of the plants from which Caoutchouc is principally obtained in 
quantity. 
EUPHORBIACER. 
Hevea Brasiliensis, Muell., and other species of the same genus. 
Micrandra siphonioides, Bth. 
M. minor, Bth. 
APOCYNACER. 
Willughbeia edulis, Roxb. 
uayanensis, Au 
Hancornia speciosa. 
Vahea gummifera. 
y cordc 
arissa sp. 
Urceola elastica, Wight. 
Tabernemontana utilis, Arnott. 
ASCLEPIADACEE 
SARE Mélifoliudi, Wight. 
Urti 
ou. dti Roxb. 
F. Ind 
dis igiosa 
F. Peleo 
Sycomorus Quite Miq. 
Artocarpus m 
Castilloa elastic 
There is much to be done yet before the whole matter is elucidated ; 
oue way of dealing with it would be by comparing authentic specimens - 
obtained from the plants themselves with our commercial varieties. I 
should be glad to be favoured with any such specimens, either of 
india-rubber or gutta-percha. 
11, Arthur Street, Deptford, November, 1867. 
ON THE PLANTS CULTIVATED OR NATURALIZED IN 
THE VALLEY OF CARACAS, AND THEIR VERNA- 
CULAR NAMES 
By A. Ernst, Esa. 
(Continued from Vol. V. p. 275.) 
Bromelia Ananas, L. (Ananassa sativa, Lindl.— The Pineapple 
(Pifia) is frequently cultivated in the immediate neighbourhood of the 
valley of Caracas (Baruta, etc.), so that the fruit may be bought at 
COM Be Oh Relea ies SEEDS CUN ERE, Ree Sela Ree 
