1、 Shape difference

Dipstick is a climbing succulent shrub, about 3-15 meters long, with air roots, 3 horns or edges. Its color is dark green at the initial stage, and will become light blue-green when it grows later. The edge of the old branch is usually swollen and light brown. The small nests are arranged along the edges, and each small nest has 1-3 hard spines. The hard spines are conical, grayish brown to black

The crown pillar plant is cylindrical, much shorter than the former, about 7-8 meters high. It has a relatively large number of edges, 6-8, dark green or grayish green. The thorn base is rare, with brown felts and 5-6 thorns

2、 The difference between flowers

The flowers of the sky ruler are funnel-shaped and open at night. The calyx shaped perianth is yellow green and the petal shaped one is white

The flowers of the crown wheel column are tubular or trumpet shaped, and the color is white

3、 Fruit difference

The berries of the sky ruler are red and long spherical

The berries of the sky wheel column are yellow or red