REPORT ON THE CAOUTCHOUC OP COMMERCE. 
23 
NATURAL ORDER.— APOCYNACEiE. 
1. American Sources op Supply, 
Haneornia speciosa, Mull. arg. 
Pernambuco Caoutchouc. 
Haneornia speciosa , Mull. Arg. in Martins’ Elo. Eras,, Apocynacese, 
p. 24. 
Vernacular Names.- — Mangaiba (Piso, Bras., p. 76) ; Man - 
gaUba vel mangaiba (Marcgr. Bras., p. 122). 
Geographic Distribution, — About Rio Janeiro. In the 
provinces of Bahia, Pernambuco, Goyaz, Sao Paulo, 
Sergipe, Minas geraes, Rayal, &e. 
Varieties. — a. minor = H. speciosa , Gomes, obs. bot. med. 
bras. 2, p. 1, t. 1 ; D.C. Prod., viii., p. 325. 
b. Maxvmiliwia — II. speciosa s Nees et Mart., 
Act. Soe. Cup., xi y p. 85. 
c. Lundii. D.C. Prod. 1. c. 
d. Gardner i, Mull. arg. = 11. pubescens 0. 
? Gardneri. D.C. Prod. 1. c. 
e. pubescens , Mull. Arg. = H. pubescens, Nees 
et Mart. 1, k c. • 
Remarks.— The fruit is held in high estimation, is of a 
yellow colour, a little streaked with red on one side, and 
about the size of an Orleans plum. The tree reaches 
the ordinary size of the apple jree, with small leaves 
and drooping branches, giving it the appearance of a 
weeping birch. It affords a good Caoutchouc, but is 
not much collected, as the tree is more valued for its 
fruit. M. Claussen* gives its general geographic dis- 
tribution as being on the high plateaux of % South 
America, between 10° and* 12° S.L., at a height of 3000 
to 5000 feet above the sea level. The Rgncortiw laxa, 
A, D.C. ( Tabernccmontana laxa., Bentli.) is the Amlelania < 
laxa, Mull. Arg., Mart. El. Bras. The Hmcornid gracilis, 
Benth., is th ^Zsclokkea gracilis of Mull. Arg., 1. c. The 
Gouma dulcis, Benth., (— (7. uiilis, Mull. 1. c.) and the 
* Brit. Assoc. Reports, 1855, p. 103. 
