Decaryia madagascariensis
English: Zigzag plant; Geometry plant
Habitat: most unusual xeric plants; doing best in more heat; light shade to full sun.
Botany: very slow-growing spiny shrub; dioecious; stems are succulent, growing in a zigzag pattern with two spines on the outside, where the stem changes direction, more compact if grown exposed to full sun; flowers pale yellow.