Plant of Folio 2v

[Linda]

I did say already say that i agree that the flower looks like Nymphoides, but many nymphoides have no rhizomes and the ones that do appear to be vertical with roots attached, not leaves or stolons, these come out the top like a carrot, rather than leaving scars as are indicated by the vms drawing. I am not going by photos alone, descriptions also indicate "lacks a rhizome", or "lacks a large horizontal rhizome" in comparison with those which do, but are not Nymphoides. Also, only a few of the Nymphoides have flowers that match, but these are so far the same species which lack the rhizomes. 

There needs to be a Nymphoides with the correct type of flower, leaf, and rhizome. So far the best i have seen is the last one i posted, but not sure of its current designation, seems like peltata with the flowers and the red on the leaves but all the photos and drawings i have found so far show feathery roots only.