Uncarina stellulifera

Uncarina, also called succulent sesame, mousetrap plant, or local names include farehitra or farehitsy, is a genus of semi-succulent flowering plants in the Pedaliaceae (the sesame family) found in Madagascar. As most species within the genus are inhabitants of dry, semi-arid or seasonally-dry regions, many mature into water-storing pachycauls, or "caudiciformes"—a common colloquial term to describe plants that normally inhabit drier climates and develop a large, woody base, or "foot", known as a caudex. In these species, a plant's lower half gradually accumulates and stores water (similarly to a camel's hump); over time, the caudex changes shape, swelling to an often impressive size, as it adds to its own moisture "reservoir" for future periods of drought.