GUMS AND GUM-RESINS. 



Habitat. India. 

 Remarks. The milky sap on evaporation forms a sort of CAOUTCHOUC. 



Cryptostegia grandiflora, R. Br. Large-flowered Cryptostegia. 



Linn. Syst. Pentandria Digynia. 



Vernacular. Palay, Mai. 

 Habitat. Malabar, Coromandel, 



Remarks. The milky sap on evaporation forms a sort of CAOUTCHOUC. 

 Cynanchum ovalifolium, yields the CAOUTCHOUC, or INDIA-RUBBER of 

 Penang. See also " N. Os. 141. 195. and 200." Cynanchum acutum 

 yields the resin known as MONTPELLIER SCAMMONY, and Periploca 

 mauritiana, BOURBON SCAMMONY. See"N. O. 151." 



N. 0. 141. APOCYNACEJJ. DOGBANES. 

 Plumieria acuminata. H. K. Acuminated Plumieria. 



Linn. Syst. Pentandria Monogynia. 



Vernacular. Gobur-champa, Beng. Goolachin, Goburchamp, Hind. 

 Khair-champa, By. 



Habitat. East Indies. 



, Remarks. The inspissated milk-sap forms a sort of CAOUTCHOUC. 

 Collophora utilis, and Cameraria latifolia yield CAOUTCHOUC, GUM 

 ELASTIC, or ELASTIC-RESIN, in South America ; VaTiea gummifera in 

 Madagascar; and Urceola elastica, and Willoughbeia ednlis in the East 

 Indies. (Lindley.) See also " N. Os. 140. 195. and 200." Of N. O. 151. 

 Convolvulacese, Convolvulus Scammonia, Linn, yields SCAMMONY. 



N. O. 169. NYCTAGINACE^E. NYCTAGOS. 

 Bougainvillaea spectabilis. Juss. Showy Bougainvillcea. 



Linn. Syst. Octandria Monogynia. 



Vernacular. 

 Habitat. Mexico. 



Remarks. Yields a gum, like Gum-Arabie. Of N. O. 176. Poly- 

 gonacese, Coccoloba uvifera furnishes a Kino-like exudation, and Calligonum 

 pal/asia, a gum^ like Tragacanth. Of N. O. 180. Myristicacese, a species, 

 the Dungan of the Philippines yields an exudation resembling Dragon's 

 Blood, mentioned under N. O. 74. SARCOCOL (o-ap/coKo'XXa of Dioscoricles) 

 is thought to be the product of a species of N. O. 184. Penseacese, but 

 Lindley considers that it more likely is derived from some Umbellifer. 

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