The reproduction of roots as healing objects

[JoJo_Jost]

I wondered how anyone could come up with the idea of seeing a “round fortification wall with battlements and watchtowers (? see below)” in the middle of a possible plant cut, as in the circle in the middle of the Rosetta Page. Unfortunately, there aren't that many plant cross-sections on the internet, but here I found something that, with a lot of imagination (admittedly), could be interpreted as a fortification wall.

   

But even crazier is the following, which I noticed on closer inspection: These are not watchtowers at all; we know these vessels; they are from page 88f.

So did he supposedly find the basis for his “devices/vessels or tubes” here in the middle of a possible plant cross-section? Or vice versa? He developed the devices because he suspected they were here, and therefore drew them in there.

I don't know, but it's amazing...