158 ERYTHROXYLACEAE. 
ERYTHROXYLON. Coca. 
(Family Erythroxylaceae). 
Shrubs: deciduous. Twigs 
slender, somewhat zig-zag, round: 
pith moderate, round, continuous, 
pale. Buds solitary, sessile, glo- 
bose with a pair of stipular-scales, 
or those that are to develop flow- 
ers quickly compound and with 
numerous chaffy scales, the end- 
bud lacking. Leaf-scars alternate, 
2-ranked, small, crescent-shaped, 
low: bundle-trace 1, indistinct: 
stipule-scars very narrow, elon- 
gated. 
Erythrozylon, which is of no 
decorative value, is included here 
only because it is the source of 
the important anaesthetic alka- 
loid cocaine. The leaves of the 
plant are imported from Bolivia 
and Peru chiefly, though it is cul- 
tivated also in the East Indies. 
As with the opium poppy, it produces a number of distinct 
active principles. 
Glabrous: twigs brown. 
E. Coca. 
