The sub-tribe consists mostly of epiphytic plants which, in their natural environment, grow on trees or on the ground. They are generally spineless, with manyor branches. The are usually large and showy.
ZYGOC ACTUS. There is one species in this genus.
Zygocactus truncatus. W. Brazil. It is built up of short, flat, thin joints, which generally hang down forming an umbrella shape. There are many varieties, the flowers varying from carmine to white. The joints are spineless and glossy green. The taxo-nomist now recognizes plants grown under this name asBridgesii. A very popular plant with the windowsill collector, often called the “Christmas ”. Cultivation as for Epiphyllums.