Myrtillocactus

M. geometrizans -

Native to the central Mexican plateau. A tree-like plant with distinct upward curving branches. Stems have 4 to 5 wide ribs, bearing slightely felted areoles set far apart. Has 5 small, reddish-brown radial spines. Each areole can have several short, greenish flowers. The edible fruit is bright blue and globular, reiniscent of a blueberry in appearance.

Contains: mescaline.