Homotypic Synonyms See Note

Basionym Name:
Cetraria richardsonii Hook., in Richardson, Narrat. of a Journ. Polar-Sea, App. VI: 33 (1823)

Homotypic synonyms:
Cornicularia richardsonii (Hook.) Trevis., Flora, Regensburg 44(4): 51 (1861)
Evernia richardsonii (Hook.) Nyl., Mém. Soc. Imp. Sci. Nat. Cherbourg 5: 99 (1858)
Masonhalea richardsonii (Hook.) Kärnefelt, Bot. Notiser 130(1): 104 (1977)
Nephromopsis richardsonii (Hook.) Divakar, A. Crespo & Lumbsch, in Divakar, Crespo, Kraichak, Leavitt, Singh, Schmitt & Lumbsch, Fungal Diversity 84: 113 (2017)
Parmelia richardsonii (Hook.) Nyl., Flora, Regensburg 43: 42 (1860)
Platysma richardsonii (Hook.) Nyl., Syn. meth. lich. (Parisiis) 1(2): 306 (1860)