24 
REPORT ON THE CAOUTCHOUC OF COMMERCE. 
C. triphylla, Aubl. (= Cerbera triphylla , Budge), yield 
also a milky juice which is elastic when fresh, but not 
so when dry. 
2. Asiatic Sources of Supply. 
* TJrceola elastica , Boxb. 
“ Borneo ” Caoutchouc [and Sumatran]. 
TJrceola elastica , Boxb., As. Ees., 1799, y. 5, p. 167, c. icon. 
D. C. Prod., viii., p. 358. Wight, ic. t. 473. 
Synonyms. — Vahea gnmmifera? Poiret. 
Taberncemontana elastica , Spreng. 
Vernacular Names. — Gutta-sumor susuh (Mai., milk-gum) ; 
jintawan^ variety a., jintawan susu, or milky jintawan ; 
variety h., jintawan bulat, or round fruited jintawan ; and 
C. ngret or ngerit jintawan ? also variety a,., serapit , 
most common ; variety b., petabo , the best variety ; and 
variety c., menungan , the greatest quantity. Getah- 
katjai ? Sumatra. 
Geographic Distribution. — Borneo, Singapore (all 
destroyed ?), Sumatra, Penang, and Malay Peninsula 
generally. 
Bemarks. — When first this Caoutchouc appeared in com- 
merce (1864) under the name of “ gutta-susu,” from 
Borneo (via Singapore), I succeeded in identifying it as 
the produce of TJrceola elastica from comparisons drawn 
from the * e Singapore Local Beporter,”* Mr. James 
Motley, f Mr. Low,t Eoxburgh,§ and Campbells’ || 
accounts and specimens. 
It is a climbing plant, sometimes attaining to a length of 
200 paces, with a trunk at times as thick as a man’s 
body. The bark is soft and thick. The fruit is large 
and of a fine apricot colour, containing from 10 to 12 
seeds surrounded by a jpulp of a delicious flavour. 
^ August 7th, 1853. 
■j* Kew Jour. Botany, v. 5, p. 167, &c. 
j Sarawak ; its Inhabitants and Productions, by Hugh Low, London, 1848. 
§ Roxburgh, 1. c. 
|| In Herb. Brit. Mus. 
