Myrtillocactus (from Latin, `blueberry cactus`) is a genus of cacti. The genus is found from Mexico to Guatemala. The genus is best known with Myrtillocactus geometrizans. The genus Myrtillocereus Fric & Kreuz. (orth. var.) has been brought into synonymy with this genus. ... Found on http://en.wikipedia.org/wiki/Myrtillocactus
(Blue Candle, Blue Flame, Dinosaur Back Plant) This group only consists of about three, tree-like cacti from Mexico. Young plants are excellent grown in containers in a window garden or greenhouse; older plants make spectacular landscape specimens. In their native habitats, these cacti can grow up to 20 feet high with a trunk-like stem. However, pl... Found on http://www.encyclo.co.uk/local/10004