Coca is any of the four cultivated plants in the family Erythroxylaceae, native to western South America. Coca is known worldwide for its psychoactive alkaloid, cocaine.
Erythroxylum novogranatense var. novogranatense leaves and berries
Coca tree in Colombia
Leaves
Leaves and fruit
Psychoactive plants are plants, or preparations thereof, that upon ingestion induce psychotropic effects. As stated in a reference work:Psychoactive plants are plants that people ingest in the form of simple or complex preparations in order to affect the mind or alter the state of consciousness.
The tobacco plant (Nicotiana tabacum) is an example of a psychoactive plant. The active constituent is nicotine.
Image: Starr 070308 5472 Coffea arabica
Image: Tabak P9290021
Image: Colcoca 03