Basionym Name:Peltigera canina var. spongiosa Tuck., Gen. lich. (Amherst): 38 (1872)
Homotypic synonyms:Peltigera canina f. spongiosa (Tuck.) Tuck., Syn. N. Amer. Lich. (Boston) 1: 109 (1882)Peltigera canina subsp. spongiosa (Tuck.) Fink, Contr. U.S. natnl. Herb. 14(1): 163 (1910)Peltigera spongiosa (Tuck.) M. Choisy, in Tronchet, Bull. mens. Soc. linn. Soc. Bot. Lyon 5(2): 20 (1936)