A return to f25v - the dragon is the key, obviously, but is it basil?

[MarcoP]

As always, everything is possible and You are not allowed to view links. Register or Login to view. could be Basil. No plant identification can be certain, until we read the text.

My personal opinion is that You are not allowed to view links. Register or Login to view. is a better match for Plantago, as proposed by You are not allowed to view links. Register or Login to view. and many others. In You are not allowed to view links. Register or Login to view., I attached a trivial parallel with several manuscript illustrations of Plantago. 

Basically, what the illustrations have in common, are lanceolate pointed leaves with parallel veins, while basil has globular ovate leaves with palmate venation.
The dragon / basilisk / dog / sheep is not terribly informative per se.
A Plantago with critter can be seen in You are not allowed to view links. Register or Login to view., but I think the basilisk is much more common in illustrations of Basil.

Apparently, in the manuscript tradition, both Plantago and Basil were always represented in side-view. The top-view of Voynich You are not allowed to view links. Register or Login to view. doesn't match any of the two candidates.