102 



Bulletin 145 



Taconic range, through Massachusetts and Connecticut. It is 

 difficult to understand why it is less aggressive elsewhere unless 

 it be because of its preference for lime which abounds in the sec- 

 tion indicated. Plowing and 

 close pasturing have been used 

 successfully to check its pro- 

 gress. There is apparently so 

 extreme an antipathy between 

 this plant and the butter- 

 nut that wherever the butternut 

 tree gets started the shrub must 

 perish. This suggests the pos- 

 sibility of exterminating the 

 cinquefoil by planting butter- 

 nuts. Reforestation of any 

 kind, however, will soon sup- 

 Shbubby Cinquefoil, X V^. press it. Wherever it has not 



become a serious pest farmers should take warning and keep it 

 out. It has been given a variety of local names, Manchester 

 weed, prairie-weed, yellow hardback, sage-brush, etc. This 

 shrub occurs also in Europe and it may surprise some farmers 

 who have too much of it to know that as introduced from Eu- 

 rope through the nursery trade it has been rather frequently sold 

 in Vermont for ornamental planting. It is an attractive shrub 

 and there is no evidence that it has ever spread in such cases. 



THREE-TOOTHED CINQUEEOIE. Potetitilla trideutata Ait. 



This is a rather rare plant found along the rocky summits 

 of several of the Vermont mountains and higher foothills. It 

 has a shrubby base but the shoots never rise more than a few 

 inches. Each of the leaflets ends in three teeth, whence the 

 name. The white flowers, less than one-half inch across, are 

 borne in a rather pretty small terminal cluster. It is an attractive 

 plant for use in rockeries. 



