northwestern Amazon. It is an area where coca retains its 
traditional cultural significances and where a number of varia- 
tions in its use and in the plants which may serve as surrogates or 
with which it may be employed have persisted. Furthermore, it 
enters very materially into native medicinal practices. All of 
these special characteristics of its utilization and the discovery 
that in this region a distinct variety of Erythroxylon Coca exists, 
would seem to bespeak great antiquity of use and make an 
intensive study of the plant in the northwest Amazon an 
investigation of high priority. 
|b @ 
Binomials in order of their mention in foregoing discussions. 
Erythroxylon Coca Lamarck, Encycl. 2(1786)393. 
Erythroxylon Coca Lamarck var. Ipadu Plowman in Bot. Mus. Leafl., 
Harvard Univ. 27(1979)49. 
Banisteriopsis Caapi (Spr. ex Griseb.) Morton in Journ. Wash. Acad. Sci. 
21(1931)485. 
Swietenia Mahogani Jacquin, Enum. Pl. Carib. (1760)20. 
Guilielma speciosa Martius, Hist. Nat. Palm. 2(1824)82, tt. 66-67. 
Cecropia sciadophylla Martius in Flora 24(1841)II Beibl. 93. 
Cecropia peltata Linnaeus, Syst., ed. 10(1759)1286. 
Cecropia palmata Willdenow, Sp. Pl. 4(1806)652. 
Pourouma cecropiaefolia Martius in Spix et Martius, Reise Bras. 3(1831)1130. 
Triartea exorrhiza Martius, Hist. Nat. Palm. 2(1824)36, tt. 33-34. 
Astrocaryum Munbaca Martius, Hist. Nat. Palm. 2(1824)74. 
Costus amazonicus (Loes.) Macbride in Field Mus. Publ. Bot. 11(1931)13. 
Costus erythrocoryne K. Schumann in Engler, Pflanzenr. Zingib. (1904)410. 
Ocotea simulans C. K. Allen in Mem. N. Y. Bot. Gard. 10(1964)99. 
Ocotea opifera Martius in Spix et Martius, Reise Bras. 3(1831)1128. 
Crescentia Cujete Linnaeus, Sp. Pl. (1753)626. 
Manihot esculenta Crantz, Inst. Herb. 1(1766)167. 
Protium heptaphyllum (Aubl.) Marchal in Martius, Fl. Bras. 12, pt. 2(1874) 
263.. 
Erythroxylon fimbriatum Peyritsch in Martius, Fl. Bras. 12, pt. 1 (1878)162. 
Erythroxylon macrophyllum Cavanilles, Diss. 8(1789)401, t. 227. 
Erythroxylon cataractarum Spruce ex Peyritsch in Martius, Fl. Bras. 12, pt. 
1(1878)149. 
Diplotropis Martiusii Bentham in Ann. Wien. Mus. 2(1838)88. 
Stylogyne amplifolia Macbride in Field Mus. Publ. Bot. 11(1931)33. 
Couma macrocarpa Barbosa-Rodrigues in Vellosia, ed. 2, 1(1891)32, pl. 1, fig. b. 
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