84 MINNESOTA BOTANICAL STUDIES. 



23. Theloschistes chrysophtlialmus (Linn.) Norm. Con. 



16. 1852. 

 On trees. Litchfield, Meeker county, (TF. D. F., June, 

 1892;. 



24. Theloschistes polycarpus (Ehrh.) Tuckerm, Syn. N. 



Am. L. 1:50. 1882. 

 On Quercus macrocarpa MiCHX: Litchfield, Meeker 



county, {W. D. F., June, 1892). Near Mille Lacs 



lake, (E. P. Sheldon, July, 1892). 

 On Quercus velutina Lam. Garrison, Crow Wing county, 



{E. P. Sheldon, July, 1892). 

 On Gerasus virginiana (Linn.) Loisel. Mille Lacs lake 



and Minneapolis, {E. P. Sheldon, 1892). 



25. Theloschistes lychueiis (Nyl.) Tuckerm. Syn. N. Am. 



L. 1:50. 1882 

 On ^rees, Litchfield, Meeker county, (TF. D. F., June, 

 1892). 



26. Theloschistes concolor (Dicks.) Tuckerm. Syn. N.Am. 



L. 1:51. 1882. 

 On Quercus, Minneapolis {E. P. Sheldon, Sept., 1892). 

 Spicer, Kandiyohi county, ( TF D. F., June, 1892). 



GIROPHOREINyl. Syn. 2:3. 



27. Unihilicaria clillenii Tuckerm. Syn. N. E. 72. 1848. 



On igneus rocks, Taylor's Falls (TF D. F., Sept., 1892). 



LECANOREI Nyl. Syn. 2:20. 



28. Lecaiiora suhfiisca (Linn.) Ach. L. U. 393. 1810. 



On Populus tremuloides MiCHX. Minneapolis {E. P. Shel- 

 don, Sept., 1892). Osceola, Wis. (TF D. F, Sept., 

 1892). 



29. Lecanora suhfusca (Linn.) Ach. var. coilocarpa Ach. 



L. U. 393. 1810. 

 On Populus tremuloides Michx. Minnehaha Palls {E. P. 

 Sheldon, May 1892). On Plnus strobus Linn., Mille 

 Lacs lake {E. P. Sheldon, June, 1892). 



30. Pertusaria velata (Turn.) Nyl. Pyren. 35. 1858. 



On Acer snccharinum Linn. Osceola, Wis. (TF D. F., 

 Sept., 1892). 



