Petasites fragrans (Vill.) C.Presl is a heterotypic synonym of Petasites pyrenaicus (Loefl.) G.López, and Petasites fragans is only a orth. var. of this synonym.
Identification
ID 2 of taxon E will be an unintended disagreement with ID 1 of taxon B after the taxon swap
If thinning a parent results in more than 10 unintended disagreements, you
should split the parent after swapping the child to replace existing IDs
of the parent (B) with IDs that don't disagree.
