The Spaniards took advantage of the effects of chewing coca leaves. The effects of drinking coca tea are a mild stimulation and mood lift. Erythroxylum coca is one of two species of cultivated coca. Tropane alkaloids occur in plants of the families erythroxylaceae (including coca). The Incas were able to accomplish significant things while stimulated by the effects of coca. Other offerings found included figures and coca leaves. See also "Erythroxylum coca, and Erythroxylum novogranatense" spp.