Basionym Name:Leptogium adpressum Nyl., Syn. meth. lich. (Parisiis) 1(1): 131 (1858)
Homotypic synonyms:Leptogiopsis adpressa (Nyl.) Müll. Arg., Flora, Regensburg 65(19): 291 (1882)Leptogium chloromelum subsp. adpressum (Nyl.) Tuck., Syn. N. Amer. Lich. (Boston) 1: 164 (1882)Polychidium adpressum (Nyl.) Stizenb., Ber. Tät. St Gall. naturw. Ges.: 145 (1862)