These are from the Udine herbal and the Vermont Italian. It's possible they are Nymphoides. I believe the fish-root on the right indicates an aquatic plant:
These have the same schematic lines in the rhizome as the pic you posted from Sloane 4016:
In these post-VMS herbals, the water is explicitly drawn but the roots are crude:
Bessler made an effort to indicate the textures in the rhizomes, but it's not as accurate as the VMS drawing and it came much later:
I have many more pictures, but it's almost 9:00 am and I haven't had any sleep yet. I have to go.
These have the same schematic lines in the rhizome as the pic you posted from Sloane 4016:
In these post-VMS herbals, the water is explicitly drawn but the roots are crude:
Bessler made an effort to indicate the textures in the rhizomes, but it's not as accurate as the VMS drawing and it came much later:
I have many more pictures, but it's almost 9:00 am and I haven't had any sleep yet. I have to go.