Collected some green Pereskia aculeata cuttings today. It has to be the least cactus-looking cactus I've ever set eyes upon. Large, green and fairly soft leaves, small hooked thorns, rather than spines, at the bases of the petioles and long, slender stems. The older stems had definite spines though. It was much thinner, in terms of stem diameter, than I was expected. Will see how they root now. Seems like it shouldn't be as easy as other cacti due to being so little like other cacti, but we'll see.