f17r

[MarcoP]

Eyes in roots are not common.

If you recall more examples, please post them here. My point here is that it is the eye specifically in the root that serves as the visual key. Of course I may be mistaken here, but note that the BNF Lat 17844 image not only simply features an eye - it also features red in the eye and (the more so!) the red line protracting from the eye upwards.

Hi Anton,
while browsing BNF Lat 17844 I noticed another plant with eye-roots: Sigillo de Sancta Maria (St.Mary's seal) 70v.

Similar illustrations linked at plant.71 of the You are not allowed to view links. Register or Login to view..
The identification with You are not allowed to view links. Register or Login to view. is for once straightforward. 

The text doesn't mention the ocular use of the plant.