The auger plent is a descendant of the thornleffo. Both branches wind around a imaginary axis, which goes through the trunk. Now all the leaves get equal sunlight, so that the photosynthesis is more efficient. Also the leaf-veins at the top of the auger plent each split into two different leaves for a bigger surface area. The leaves near the trunk still remained one leaf each, though, to be more robust, since most herbivores just reach to these leaves.
Living Relatives (click to show/hide)
None found. Note that this does not necessarily mean it has no living relatives at all, but that, assuming all taxonomy is filled in, its entire phylum is extinct; any relatives it does have likely do not resemble it.