Coffea arabica, coffee, Rubiaceae, flowers, fruits, drying of fruits.

Thea sinensis, tea, Theaceae, flowers, plantation and harvesting.

Cola acuminata, cola, Sterculiaceae, flower and fruits.

Ilex paraguayensis, yerba maté, flowers and leaves, plantation.

Alchornea iricurana, mora blanca, Euphorbiaceae, tree.

Alchornea rugosa, Euphorbiaceae, flowers.

Pilocarpus pinnatifida, Rutaceae, inflorescence, shrub.

Lythraceae alkaloids

Heimia salicifolia, Lythraceae, plant in flower.

Zizyphus obtusifolius, Rhamnaceae, bush, and flower.

Maytenus emarginata, Celastraceae, plant with flowers, fruits.

Securinega suffruticosa, Euphorbiaceae, plant in flower.

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© David S. Seigler, Plant Biology 363, Plant Secondary Metabolism, Department of Plant Biology, 265 Morrill Hall, 505 S. Goodwin Ave., University of Illinois, Urbana, Illinois 61801, USA. 217-333-7577. seigler@life.uiuc.edu.