Homotypic Synonyms See Note

Basionym Name:
Verrucaria biformis Schaer., Lich. helv. spicil. 2: 56 (1826)

Homotypic synonyms:
Acrocordia biformis (Schaer.) Arnold, Flora, Regensburg 44: 537 (1861)
Acrocordia biformis f. biformis (Schaer.) Arnold, Flora, Regensburg 44: 537 (1861)
Acrocordia biformis var. biformis (Schaer.) Arnold, Flora, Regensburg 44: 537 (1861)
Amphisphaeria biformis (Schaer.) Rehm, Annls mycol. 4(3): 264 (1906)
Anisomeridium biforme (Schaer.) R.C. Harris, in Vězda, Folia geobot. phytotax. 20: 207 (1978)
Anisomeridium biforme f. biforme (Schaer.) R.C. Harris, in Vězda, Folia geobot. phytotax. 20: 207 (1978)
Arthopyrenia biformis (Schaer.) A. Massal., Framm. Lichenogr.: 26 (1855)
Arthopyrenia biformis f. biformis (Schaer.) A. Massal., Framm. Lichenogr.: 26 (1855)
Arthopyrenia biformis var. biformis (Schaer.) A. Massal., Framm. Lichenogr.: 26 (1855)
Ditremis biformis (Schaer.) R.C. Harris, Some Florida Lichens (New York): 32 (1990)
Leiophloea biformis (Schaer.) Trevis., Conspect. Verruc.: 9 (1860)
Lembidium biforme (Schaer.) Arnold, Flora, Regensburg 53(30–31): 486 (1871)
Sagedia biformis (Schaer.) Müll. Arg., Flora, Regensburg 63: 290 (1880)
Segestrella biformis (Schaer.) Branth & Rostr., Bot. Tidsskr. 3: 256 (1869)
Thelidium biforme (Schaer.) Mudd, [as 'biformis'] Man. Brit. Lich.: 297 (1861)