Harvard University Herbaria & Libraries

FH: 00393637 Cyphelium tigillare (Acharius) Acharius USA: Illinois [data not captured] W. W. Calkins 1902
FH: 00439165 Endocarpon pusillum Hedwig USA: Illinois [data not captured] W. W. Calkins 20 1902
FH: 00478643 Polysporina simplex (Borrer ex Hooker) Vězda USA: Illinois [no additional data] W. W. Calkins 1902
FH: 00478643 Sarcogyne pruinosa (Schaerer) A. Massalongo USA: Illinois [no additional data] W. W. Calkins 1902
FH: 00478643 Sarcogyne simplex (Davies) Nylander USA: Illinois [no additional data] W. W. Calkins 1902
Cladoniaceae
FH: 00426004 Cladonia pyxidata neglecta (Flörke) Massalongo, A. B. USA: Illinois [data not captured] W. W. Calkins 90 1902
Lecanoraceae
FH: 00478643 Lecanora cervina Acharius USA: Illinois [no additional data] W. W. Calkins 1902
Pyrenopsidaceae
FH: 00473660 Placynthium nigrum (Hudson) Gray USA: Illinois [data not captured] W. W. Calkins 1902