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NOTE: Borrera furfuracea is sometimes referred to in ethnographic literature, but the genus Borrera is no longer valid and has been replaced with the genus Teloschistes. There does not appear to be a synonym for Borrera furfuracea, but from descriptions given by ethnographers I think that the name Borrera furfuracea was used to refer to Pseudevernia furfuracea (however, Pseudevernia and Teloschistes are completely unrelated genera).
It should be further noted that Pseudevernia furfuracea does not grow in North America. Any references to this lichen in North American ethnographic literature are probably actually referring to Pseudevernia consocians or Pseudevernia intense.