Capensis is correct Peat. Though age doesnt stop a plant from creating lowers. As the plat climbs it adapts to supports pitchers which will not be suited to sit on the ground, they will look different then those pitchers suited for the ground and are called uppers. The lowers can still be formed by the plant as it sends out basals. The basals are still attached to the mother so it is the same plant but it can be separated from the mother into another individual plant which can repeat the process. As capensis said, uppers tend to have tendrils that will coil more so then lowers, but I have a miranda in my collection that has coiled lowers before.