Plant 52r

[Koen G]

It seems like some kind of "placeholder-real" set of plant images were drawn interspersed with those having biblical imagery, to maybe hide them in plain sight (for god knows what), and this maybe one of them..

Maybe, but the wooden part (whether it's roots or stems) is deliberately unnaturalistic in my opinion. Let me put a few examples together.  f2r f14v You are not allowed to view links. Register or Login to view.
   

All of these are similarly weird. Understanding what's going on in one might help with the rest, maybe.