Compound plants in the VMS ?

[Koen G]

If you mean the line separating root from stem, this is a difference between Herbal A and Herbal B, as observed by Oocephalus. I wrote about it here: You are not allowed to view links. Register or Login to view.

While it could still mean something like grafting, I think the A vs B division makes this less likely. To me it looks most likely that someone added these lines to one group of plants (wherever he deemed necessary), while he did not work with the other group of plants.