BEAL ON MICHIGAN FLORA. 11 



Prof. V. M. Spalding kindly permitted us to examine the University 

 Herbarium at Ann Arbor, in which are deposited the collections of Dr. 

 Douglass Houghton, 1838 ; Miss Mary H. Clark, Miss E. C. Almendinger, 

 Prof. M. W. Harrington, Prof. N. H. Winchell, Geo. L. Ames, M. D., F. 

 E. Wood and others. 



The collection of plants belonging to the Kent Scientific Institute it 

 Grand Rapids under the charge of Mr. George D. Sones. 



The collection of O. J. Stilwell, which belongs now to Prof. C. A. Davis 

 of University of Michigan ; also Prof. Davis' collection. 



The collection of G. H. Hicks, of the Agricultural College, made in 

 Northern and Central Michigan. 



The collection of G. F. Comstock, made in Lenawee Counly. 1S15-'50, 

 now the property of Dr. W. J. Beal. 



The collection of Dr. W. J. Beal, 1860-1870, now the property of the 

 Michigan Agricultural College. 



LOCAL LISTS CONSULTED. 



To the following persons we are indebted for lists of the plants growing 

 in their several localities : 



Farwell, O. A., for full list of plants of the Keweenaw peninsula, Ypsi- 

 lanti and Detroit, with copious notes and many specimens. 



Beardslee, Prof. H. C., of the University School, Cleveland, O., and 

 Kofoid, Prof. Chas. A., Leland Stanford Jr. University, for a very com- 

 plete list of the plants of Cheboygan County, Mich., observed by them 

 during the smmer of 1890, with full notes and many specimens. 



Dodge, C. K., for a collection of the plants growing in the vicinity of 

 Port Huron, with many notes on variation and distribution. 



Dewey, L. H., for a list of the plants in the vicinity of Tecumseh, Mich. 



Hull, Prof. W., for notes and specimens from Albion and vicinity. 



Orth, S. P., for list of plants in the vicinity of Imlay City. 



Mosely, E. H., for a list of plants observed near Union City. 



Foerste, A. F., for a list of plants observed in the eastern part of St. 

 Clair county. 



Mitchell, Prof. I. N., for a list of plants collected in various parts of 

 the State. 



St. John, Prof. C. E., for a list of plants collected in Mason county 

 and in .the southeastern portion of the State. 



Stacey, I. W., for a list of plants collected at Clarksville, Ionia county. 



Daniels, F. P., for a list of plants collected at Manistee and Sturgis. 



Cooper, W. S., St. Clair county. 



Davis, Charles A., lists of plants of Gratiot county in the vicinity of 

 Alma, and about Ann Arbor. 



Bradford, G. M., Flora of Bay county. 



Pepoon, H. S., catalogue of the plants of Michigan adjacent to Lakes 

 Magician, Dewey, Cable and Crooked, Van Buren and Cass counties. ' 



TOPOGRAPHY. 



Michigan is peculiarly situated within the waters of the great lakes, N. 

 latitude 4145' to 4820'; W. longitude 8225' to 9034'. It is divided 

 into two parts, called the Upper and Lower Peninsulas. The greatest 

 length of the northern portion from east to west is 318 miles, width 30 to 



