Etymology: Similar to the Opuntia plants. Origin: Virtually the entire American continent.
Plants vary greatly in habit, from caespitosa up tree. They usually have leaves but these are often not persistent. Almost all species have a strong segmentation. They glochids and thorns, in many cases retrobarbadas. Daytime flowers.
CITES Field Global Level Cites II Convenio sobre el Comercio Internacional de Especies Amenazadas de Fauna y Flora Silvestre