"Dragon" 25v

[Koen G]

Also, people were unsure whether a basilisk was a serpent or a dragon, so it may appear in either form.

I think they weren't even sure whether a dragon was a serpent or a dragon :). In Greek and Latin, draco could really be any large serpent.

Bluetoes: a foliage dragon seems plausible. I wonder what the weird double line is running from the "tail" to the win. Might one of the foliages have branched off from the tail to go behind the body and emerge at the chest, to then be reinterpreted as the far leg? 

The example you post seems pretty close in facial features, though the VM dragon seems to have lost its dentures.