304 Fink: LICHENS IN THE UPPER MīIssIssIPPI VALLEY 
Pyrenula thaelena (Ach.) Tuck.—Minn., Ia., Ill., O. 
Pyrenula cinerella (Flot.) Tuck.—Minn., Ia. 
Pyrenula quinqueseptata (Nyl.) Tuck.—Minn. 
Pyrenula leucoplaca (Wallr.) Kbr.—Minn., Ia., Ill. 
Pyrenula subcinerea (Nyl.) Tuck.—Ill. 
Pyrenula glabrata (Ach.) Mass.—Minn., Ia., Ill., O. 
Pyrenula lactea (Mass.) Tuck.—Ia., Ill. 
Pyrenula fallaciosa Stizenb.—Neb. 
BIBLIOGRAPHY. 
1. Arthur, J. C. Report on botanical Work in Minnesota for the Year 
1886. Geol. Nat. Hist. Surv. Minn. 3: 31, 32. I O. 1887. 
List of 37 species determined by H. Willey and F. L. Sargent 
Flora of Floyd county, Iowa. Bot. Gaz. 7: 127. N. 
1882. 
The paper was published corii in a history of Floyd county and contained 
only a popular statement abont the li 
3- Bessey, C. E. une list of the Carpophytes of the Ames 
Flora. Bull. Iowa Age College. 141-148. N. 1884. 
Gives a list of 24 lichen : ‘ 
4. Bogue, E. E. UN of Ohio. Jour. Cincinnati Soc. Nat. Hist. 
16: 37-48. 2 My. 1893. 
Lists 166 species. : 
5. Calkins, W. W. The Lichen Flora of Chicago and Vicinity. 
Geol. and Nat. Hist. Surv. Chicago Acad. Sci. 1: 1-52. Ap. 
1896 
Brief descriptions of 125 species and varieties, with notes on habitat. 
6. Cragin, F. W. Notes on mer es Bull. Washburn Coll. 
te Nat. Hist. 1: 64. Ja. 18 
s 2 species as new to the State d 5 DNE I5 collected by E. Hall and 
mo in Tuckerman's Manual. 
7. Fink, B. The Lichens of Iowa. Bull. Lab. Nat. Hist. State 
Univ. Iowa, 3: 70-88. 26 Au. 1895. 
Lists 196 species and varieties with brief notes. 
8. Lichens collected by Dr. C. C. Parry, in Wisconsin and 
. Minnesota in 1848. Proc. Iowa Acad. Sci. 2: 137. 1895. 
List of 23 species with brief notes. 
9. Lichens of Iowa (exsiccati). Fayette, Iowa, 1895-1898, 
—100 sets of 100 to 150 species each have been distributed in 
Te and America, 
