7,2 BULLETIN OF THE LABORATORIES 



XXVIII. ROSACEAE 



98. Prunus Tourn. 



191. P. Americana Marshall. Wild Yellow or Red Plum. 

 Generally distributed over the county. May 10, 1890; May 9, 



1891. 



192. P. Virginiana L. Choke Cherry. 



Creek banks, less common than next; Gravel Pit. May 23, 

 1888; May 10, 1890; May 9, 1891. 



193. P. serotina Ehr. Wild Black Cherry. 



Open woods, common. "When the first settlers arrived in the 

 county, they found an immense grove of these trees extending along 

 the valley of the Raccoon Creek for several miles. The trees were 

 of very large size and hundreds of years old, as shown by the rings 

 of growth. They were almost all cut down between 1830 40, espe- 

 cially after the opening of the Ohio Canal in 1833." A few of these 

 are still standing. May 18, 1884; May 14, 1887; May 11, 1889; May 

 24, 1890; May 9, 1 89 1. 



99. Spiraea L. 



194. S. salicifolia L. Common Meadow Sweet. 



Margins of swamps, rare; Granger's Swamp. August 11, 1888; 

 July 9, 1890; August 3, 1891. 



195. S. lobata Jacq. Queen of the Prairie. 



Margins of swamps, Spring Valley and Toboso, but rare. July 

 17, 1890. 



196. S. Aruncus L. Goat's-beard. 



Wet meadows, rare; Welsh Hills and Toboso. July 13, 1890 



100 Physocarpus Maxim. 



197. P. opulifolius Maxim. Nine bark. 



Rocky hillside's, rare; Arbutus Ridge and a few places in eastern 

 part of county. June 13, 1890. 



101. Rubus Tourn. 



198. R. strigosus Michx. Wild Red Raspberry. 

 Rocky hillsides, very rare; Spruce Hill. 



199. R. occidentalis L. Black Raspberry. Thimbleberry. 



