A small cutting in my collection
Found in tropical forests from southern Mexico to Columbia, Selenicereus testudo is a branching, semi-prostrate, ephiphytic cactus with segmented stems up to 10 inches long and 4 inches thick. Stems can have from 3 to 8 spiny ribs. Large white and yellow flowers up to 8 inches across are produced at night in profusion followed by a spiny purple fruit.
This came from Shoal Creek succulents. As it grows I'll take cuttings and plant them back in the pot till I have a potfull of it. I'll eventually hang it and let the stems trail down.