Dischidia nummularia, aka String of Nickels or Button Orchid, is a super cute, trailing succulent, and can form a dense mass of lemon-lime-coloured foliage. Native to Southeast Asia, this epiphyte, which is an organism that grows on other plants for physical support, produces flat, round leaves on stems that can grow up to 3 meters long - it's no wonder where this plant gets its common name from!