117 



III. — Cav. Diss. t. 229 ; Ruiz, Lopez and Pavon, Fl. Peruv. 

 Tabulae ined. t. 398; Hook. Comp. Bot. Mag. ii. 1836, t. 21 j 

 Martins, Beitr. Kennt. Gatt. Erythroxylon (Abh. Bayer. Akad. iii.) 

 t. 6 ; Le Maout and Deeaisne, Botany (Hooker's Transl.) p. 295 ; 

 Baillon, Hist, PL v. p. 50, ff. 80-87 ; Kew Bull. 1889, p. 4, f . 1 ; 

 Teysmannia, Batavia, i. 1890, p. 419, 1. 1, f. 1 ; t. 3 (E. bolivianum) ; 

 Journ. Linn. Soc. xxv. 1890, p. 382, f. 1 ; Nicholls, Trop. Agric. 

 p. 235 ; Pharm. Journ. [3] xxii. p. 818, f. 4 (var. bolivianum), 

 I.e. [4] viii. p. 484 ; I.e. xii. p. 3, ff. 1, 2, p. 4, f. 3. Bot. Mag. 

 t. 7334 ; Engl, and Prantl, iii. p. 4, f. 34a ; Cat. PI. Hort. 

 Col. Brux. p. 78 ; Druggists Circ and Chem. Gaz. November, 

 1900, p. 220, ff. 1 and 3 (excluding fruit in fig. 1) ; Nat. Stand. 

 Disp. 1905, p. 445 (leaf of Huanuco Coca) ; Engler, Das Pflan. iv. 

 134, 1907, p. 84, f. 17 ; Teysmannia, Batavia, xix. 1908, pp. 420, 

 421. 



Coca ; Huanuco Coca. 



Erythroxylon novogranatense (Morris) Hieronymus, in Engler 's 

 Bot. Jahrb. xx. Beibl. n. 49 (1895), p. 35. 



IE. Coca, Lam., var. novo-granatense, Morris, in Kew Bull. 



1889, p. 5 ; E. Coca, Lam., var. Spruceana, Burck., in Teysmannia, 



1890, p. 456 ; E. truxillense, Rusbv, in Druggists' Circ. and Chem. 

 Gazette, 1900, p. 220.] 



A leafy bushy plant, bark greyish brown, branches numerous 

 and somewhat spreading (not erect as in E. Coca). Leaves usually 

 smaller than E. Coca, 2 inches long, 1 inch broad, crowded, mem- 

 braneous, bright green above, paler and glaucous beneath, obovate 

 lanceolate, narrowly attenuated into the petiole, apex rounded, 

 often emarginate, with a small apiculus in the notch (Kew Bull. 

 1889, p. 5). 



III. — Regel, Gartenflora, xviii. 1869, t. 615 (E. mexicanum) ; 

 The Garden, ix. 1876, p. 445 ; Bentl. and Trimen, Med. PI. t. 40 

 (E. Coca) ; Kew Bull. 1889, p. 5, f. 2 (var. novo-granatense) ; 

 Journ. Linn. Soc. xxv. 1890, p. 384, f. 2 (var. novo granatense) ; 

 Teysmannia, Batavia, i. 1890, p. 449, t. 1, f. 2 (var. novo-grana- 

 tense), t. 2 (var. Spruceanum) ; Pharm. Journ. [3] xxii. p. 818, 

 f. 2 (var. novo-granatense), f. 3 (var. Spruceanum) ; I.e. [4] viii., 

 p. 484 ; I.e. xii. p. 81 (E. truxillense), p. 82 (E. truxillense) ; 

 Druggist's Circ. and Chem. Gaz. November, 1900, p. 222, f. 15 ; 

 I.e. March, 1901, p. 49, ff. 1 and 2 (E. truxillense) ; Nat, Stand. 

 Disp. 1905, p. 445 (leaves of Java and Truxillo Coca) ; Engler, 

 Das Pflan. iv. 131, 1907, p. 86 ; Teysmannia, Batavia, xix, 1908, 

 p. 421 (E. novo-granatense), p. 422 ("Java Coca," E. novo-grana- 

 tense). 



Coca, or Cuca (Peru, Peyritsch) ; Truxillo Coca. 



The Coca leaves of commerce are obtained from the plants 

 above mentioned. Peruvian Coca is usually known as " Truxillo," 

 and Bolivian as " Huanuco." Other important sources of the 

 drug are Ceylon and Java. 



The leaves are used in Peru, Bolivia, Brazil and other parts of 

 South America as a stimulant, in much the same way as the Cola 

 nut is used in West Africa. They are officially recognised in the 

 British Pharmacopoeia as •* Cocae foliae," as well as the alkaloid 



