Basionym Name:Alectoria sarmentosa subsp. thulensis Th. Fr., Lich. arct. (Uppsala): 28 (1860)
Homotypic synonyms:Alectoria nigricans var. thulensis (Th. Fr.) Vain., Ark. Bot. 8(no. 4): 14 (1909)Alectoria thulensis (Th. Fr.) Nyl., Flora, Regensburg 44: 632 (1861)Alectoria thulensis var. thulensis (Th. Fr.) Nyl., Flora, Regensburg 44: 632 (1861)Bryopogon nigricans f. thulensis (Th. Fr.) Gyeln., Feddes Repert. Spec. Nov. Regni veg. 38: 239 (1935)