Kleinia madagascariensis

This kleinia grows into a branched shrublet, often arranged as a fountain , with its branches spreading and arching outwards. The stems are typically ribbed, green, with lots of pale dots, becoming grey in high light. Leaves are shed soon. It comes from North of Tulear, in Madagascar

Picture of the plant from wikimedia commons:
https://commons.wikimedia.org/wiki/File:Kleinia_madagascariensis_2019-12-13_6298.jpg