Basionym Name:Heterothecium nannarium Tuck., Gen. lich. (Amherst): 176 (1872)
Homotypic synonyms:Biatorella nannaria (Tuck.) Zahlbr., Cat. Lich. Univers. 5: 44 (1927)Heterothecium conspersum subsp. nannarium (Tuck.) Tuck., Syn. N. Amer. Lich. (Boston) 2: 60 (1888)Piccolia nannaria (Tuck.) Lendemer & Beeching, in Knudsen & Lendemer, Mycotaxon 101: 83 (2007)