Illustration of Coffea Arabica L.106 (Coffea arabica L., Arabian coffee) Köhler's medicinal plants in lifelike pictures with explanatory text: Atlas zum Pharmacopoea germanica
A - a branch with flowers and unripe fruits; 1 - expanded whisk; 2 - stamens; 3 - a pestle with a cup; 4 - an ovary in a longitudinal section; 5 and 6 - seed from the dorsal and ventral sides; 7 - the fetus in cross section; 8 - seed in cross section; 9 - the same with the shown root of the embryo; 10 - the root of the embryo.
Source: Franz Eugen Kohler