18 



Having been brought down to the south b}^ change of 

 climate before the advancing glaciers, they were at one time 

 abundant in this region and have persisted in the few locali- 

 ties where conditions favored their growth, and have dis- 

 appeared in other places. 



NOTES OX SOME XEWLY INTRODUCED PLANTS. 



BV AUG. D. SELBY, WOOSTER. 



Notes are presented upon three species. Sa/so/a kali 

 tragus (L) Moq., the so called Russian Thistle, has reached 

 Ohio. Augu.st last it was sent to the Ohio Experiment 

 Station, from Bryan, O., by G. W. M3-ers. The place'was 

 visited in September and a number of specimens collected. 

 The pest is well scattered for some eight miles along the 

 L. S. & M. S. railway tracks. E. E. Masterman reports 

 the same plant from New London, O., on the Big Four road, 

 and Wni. Krebs has collected it along that railroad at Cleve- 

 land. It is likely to become general in the State, and must 

 be watched carefully, when it appears, if kept fully under 

 control. 



Solaniim rostratiiin Dunal, the Prickle3'-fruited Solan- 

 um. was first found at Sellsville, near Columbus, in 1890 

 and 1?^1*1. Specimens have this season been .seen by Job Kay, 

 Wynant. Shelby Co., Frank Drake, Covington, Miami Co., 

 and it has been collected by Krebs and Claa.ssen at Hud^^n, 

 Ohio, by H. C. Beardslee -at Ashtabula, and by J. B. Wright 

 at Wilmington. Three years ago the writer predicted that 

 this would be a permanent addition to the weedy plants of 

 the State. This seems to be verified. 



Thlaspi arvense L. Penny Cress, a cruciferous plant is 

 decidedly too abundant on some of the sandy lands in north- 

 western Ohio. Specimens have been received from J. B. 

 Templeton, of Swanton, Fulton Co. It is reported from 

 other localities and seems to have been introduced in grass 



