flat-top / hollow roots

[Bernd]

My theory for those "platform roots" and "telescoping roots"  in the Herbals section is that those pages are expanded versions of sketches from the Pharma section

This would actually explain a few of the oddities. I also suspect that Hand1 illustrations including Pharma predate the more sophisticated and stylized plant drawings by other hands.

I find the Taccola example interesting. Notwithstanding the recent post around Taccola and power generators, his documents are fascinating. You are not allowed to view links. Register or Login to view.
What they actually show is how poorly drawn Voynich is for the period. Lots of pipes though...and dragons

It also shows that even an excellent artist can sometimes struggle with perspective.
Palatino 766 also has a Sun(?) with pipes.