Pereskia

Pereskia is a genus that includes 16 species of primitive cactus original from Central and South America, from Mexico to Brazil. The plants of this genus have persistent leaves and some authors do not consider them succulent. The species can be bushy, tree shaped and even and climbing. The name was given by Linne in honor to the french naturalist of XVI century Nicholas Fabre de Peiresc.
Most of the species resist well low temperatures.
The flowers appear in summer and in some species are of big.