IOWA ACADEMY OP SCIENCES. 
171 
Reached 150 numbers. Short notices of these will be found as 
follows: Botanische Zeitung 7 : 533. 20 J1 1849; Flora 15 : 
(new series) 88. 14 F. 1851; 18: 173-175. 21 Mr 1860. 
66. — . A synopsis of the Lichens of the north- 
ern United States and British America. Proc Am Acad. Arts 
and Sci. 1 : 195-285. 1848. Read December 7, 1847. Describes 
275 species. 
67. , in Lea, T. G. Catalogue of the plants, 
native and naturalized, collected in the vicinity of Cincinnati, 
O., during the years 1834-1844; Philadelphia, 1846. List of 
fifty-three species; one new. 
68. , in Agassiz, L. Lake Superior, its 
* Physical Character, Vegetation and Animals, Compared With 
Those of Other and Similar Regions. Boston. 170-174. 
Mr 1850. List of seventy -two species and varieties; four new. 
69. . Supplement to an Enumeration of 
North American Lichenes. Amer. Jour. Sci. and Arts (second 
series) 25 : pp. 422-430. 1856. Short descriptions of thirty-nine 
new North American lichens. 
70. . Supplement continued. Amer. Jour. 
Sci. and Arts 28 : 200-206. 1857. Describes twenty-two new 
North American lichens. 
71. Observations on North American and Some Other 
Lichens. Proc. Am. Acad. Arts and Sci. 4 : 383-407. 1860. 
Notes on fifty-one species and varieties, including descriptions 
of four new ones. 
72. . Observations on North American and 
Some Other Lichens. Proc. Am. Acad. Arts and Sci. 5: 
383-422. 1862. Notes on fifty-five species and varieties; about 
two-thirds new. 
73. Observationes Lichenologicse. Proc. Am. Acad. Arts 
and Sci. 12: 263-287. 1866. (Read April 12, 1864.) Treats of 
forty -eight species, thirty -seven being new. 
74. . Lecidea elabens Fr. Flora 58 : 63-64. 1 
F 1875. A note concerning. 
75. . Observationes Lichenologicse. Proc. 
Am. Acad. Arts and Sci. 12 : 166-185. 1877. Notes on forty- 
three species and varieties, thirty-one being new. 
76. . List of Lichens collected in the vicinity 
of Annanactook harbor, Cumberland Sound about Lat. 67° N. , 
Long. 68° 49' W. Bull. United States Nat. Mus. 15: 167-168. 
1879. Lists fifty-three lichens. 
