LEAVES OF BOLIVIAN COCA, NATURAL SIZE
(Lower surface.)
The upper surface of these leaves is of a beautiful green tint; the lower surface of a paler green, except, however, near the midrib. At this point, there is a strip of green darker than the rest, which becomes brown in the withered leaves.
LEAF OF COCA OF COLOMBIA, NATURAL SIZE
The flowers, small, regular and hermaphrodite, white or greenish yellow, are found either alone or in groups in little bunches of cyme at the axil of the leaves or bracts, which take their place on certain branches. The disposition into cymes is that most commonly met with. They are supported by a slender pedicel, somewhat inflated at the top, the length of which does not exceed one centimetre.
NERVURES OF THE LEAF OF PERUVIAN COCA, SEEN BY TRANSMITTED LIGHT. NATURAL SIZE.