The reproduction of roots as healing objects

[rikforto]

The problem I'm having is that without your nascent translation, I don't see a lot to go off of on the plant vascular system metaphor here. (And this is entirely factual; You are not allowed to view links. Register or Login to view.) These side-by-side comparisons have apparently significant deviations---roots that are entirely different; vessels with deviating shapes, sizes, and parts. In particular, one must be extremely careful when leaning on metaphor because it is quite literally an appeal to something that isn't there.

So I suppose my question for you is: What distinguishes this from the great many other partial and plausible comparisons? Is there some line of evidence or argument you can share that would strengthen the points of similarity and weaken the problems raised by the differences?