Further editing: 2001-03 Sokoloff DD
; Scrutinised globally by taxonomic co-ordinator: 2001-03 Sokoloff DD & Kramina TE
; Source(s): 1988 (Europe) ESFEDS
According to Hooker A.webbiana differs from these two taxa in some important 
Nothing of the original material is found in herbaria. 
No similar specimens have been collected by other botanists from Madeira. 
Until new records are found this taxon should be treated as a nomen dubium.