Wanni Rukula, having large leaves, a vigorous growth, and small berries;
Coffea aruwimensis, being a mixture of different types.
COFFEA ARABICA BERRIES GROWN IN THE HAWAIIAN ISLANDS
The last three types were received by Dr. Cramer at Bangelan from Frère Gillet in the Belgian Congo, and were still under trial in Java in 1919.
Coffea Robusta
Emil Laurent, in 1898, discovered a species of coffee growing wild in Congo. This was taken up by a horticultural firm of Brussels, and cultivated for the market. This firm gave to the coffee the name Coffea robusta, although it had already been given the name of the discoverer, being known as Coffea Laurentii. The plant differs widely from both arabica and liberica, being considerably larger than either. The tree is umbrella-shaped, due to the fact that its branches are very long and bend toward the ground.