Rhipsalis mesembryanthemoides is a cactus in the genus Rhipsalis of the family Cactaceae. Rhipsalis mesembryanthemoides is an epiphytic plant with strong stems covered by tiny branchlets. Initially this plant grows erect; later it is pendent. The main branches are elongated, cylindrical and woody, 10 to 20 inches long and 1 to 2 millimeters in diameter. The white flowers appear at areoles of the branchlets. They are 8 millimeters long and reach a diameter of 15 millimeters. The short-oblong fruits are white, about 5 millimeters long.