259 



river flows. The valley hag a black, gravelly soil of great fertility. The 

 White Water railroad traverses the county from north to south; the I-ake 

 Erie & Western goes north from Connersville. The Cincinnati, Hamilton 

 & Indianapolis crosses the county from east to west, and crosses the W. 

 W. R. R. at Connersville, and at a different level. I mention this fact be- 

 cause it has some bearing on the distribution of weeds. 



In the following notes the plants are given in the order of arrival by 

 years. The first two years are grouped together, as my notes do not allow 

 me to differentiate. At that time I did not get over the county so much as 

 in after years, and some of the plants may have appeared a year or two be- 

 fore this date. After the vear 1882 I traversed the ground so frequently 

 that I am sure the dates given for the arrival of new species are correct. 

 The nomenclature is that of the last revised edition of Gray. 



The following nine plants were seen during the years 1881 and 1882, that 

 is, when I first began botanizing systematically. 



Echinosperinum Lappula, seen along the W. W. R. R. near Connersville. 

 The patch has increased only slightly, not inclined to spread much. 



Arenaria serpylli folia, a small plant first seen along the W. W. R. R. below 

 town. Now very common in sandy or gravelly soil. Not given in Coul- 

 ter's catalogue of the plants of Indiana. • 



Potentilla Norvegica, occasionally seen in meadows, and is now rather 

 common. 



MecUcago JirpuJina, seen along the C, H. & I. west of town, is now fre- 

 quently seen along the railroads and roadsides. 



Dijsodia chri/santhemoick^, seen in the locality near the last, and is now 

 common throughout the county. 



Geranium Carolinianum, along the W. W. R. R. below town, and now 

 along the whole line. 



Verbena officinalis, along roadsides west of town, now frequently seen in 

 the valley. 



Montdia tuherculata (var. suhmida), first seen along the C, H. & I. R. R. 

 east of town, now common along that road and frequent in the valley. 



Croton monanthogijnus shows the rapid spread of a new arrival. In 1882 a 

 small patch was first seen a few miles below town in an isolated meadow 

 near a creek. The next year it appeared along the W. W. R. R. Two 

 years later it could be found throughout the White Water valley, or where- 

 ever there was dry gravelly or sandy soil. 



Beginning with the year 1883 I can give a definite date for each species. 



