Bawang flower, also known as sword flower and measuring ruler, is a perennial succulent climbing herbaceous plant of the Cactaceae family. It uses the flower organ as a vegetable. Bawang flower has a sweet and slightly cold taste and is rich in nutritional value.

The Overlord flower can be planted on the ground in the corners and edges of exhibition greenhouses to show the tropical rainforest scenery. It can also be used as a hedge plant. The potted plant can be used as a rootstock for grafting other cactus plants.