16 MINNESOTA BOTANICAL STUDIES. 



46. Lecanora varia (Ehrh.) Nyl. var. symmicta, Ach. 

 On sandstone, no 103. 



47. Lecanora cinerea (L.) Sommerf. 



On igneous rocks and sandstone, nos. 11, 19, 34 and 70. 



48. Lecanora cinerea (L.) Sommerf. var. laevata, Fr. 

 On igneous rocks, no. 14. 



Not previously reported from Minnesota. 



49. Lecanora fuscata (Schrad.) Th. Fr. 



On igneous rocks and sandstone, nos. 33, 56, 94, and 106. 

 Not previously reported from Minnesota. 



50. Rinodina sophodes (Ach.) Nyl. 



On igneous rocks and sandstone, nos. 59 and 105. 



51. Pertusaria velata (Turn.) Nyl. 

 On sandstone, no. 95. 



52. Pertusaria communis DC. 



On sandstone, no. 112. 



53. XJrceolaria scruposa (L.) Nyl. 



On igneous rocks and sandstone, no. 9. 



54. Stereocaulon condensatum Hoffm. 

 On sandstone, no. 93. 



Not previously reported from Minnesota. Also not listed 

 before west of New England. 



55. Cladonia mitrula Tuck. 



On sandstone, no. 99. 



56. Cladonia cariosa (Ach.) Spreng. 

 On sandstone, 114. 



57. Cladonia pyxidata (L.) Fr. 



On earth among igneous rocks, no. 65. 



58. Cladonia squamosa Hoffm. 



On earth among igneous rocks, nos. 72 and 78. 

 Not previously reported from Minnesota. 



59. Cladonia caespiticia (Pers.) Fl. 



On earth among igneous rocks and on sandstone, nos. 68* and 



lOI. 



60. Cladonia fimbriata (L.) Fr. var. tubaeformis Fr. 



On sandstone, nos. 104 and no. 



61. Cladonia gracilis (L.) Nyl. 



On earth among igneous rocks and on sandstone, no. 74. 



