IMPROVEMENT OF GRASS LAND 203 



whorls in erect, branched panicles (Fig. 58), and the 

 brown, triangular fruit is surrounded by fruiting sepals, 

 which have entire or only slightly toothed margins. 

 Flowering is continued longer than in the last species, 

 namely, from June to October. In connection with 



Photo, 1909. 



FIG. 59. Seedlings of Dock (Ruinex sp.). 



H. C. Long. 



arable land it is important to note the appearance of 

 the seedling Dock (Fig. 59). 



Several other species (R. pratensis L., R. sanguineus 

 L., and, in damp grass land, R. aquaticus L.) may prove 

 harmful and a nuisance both on arable and grass land. 

 Docks are common to almost all soils, and are not 

 easily got rid of. They are unfortunately able to 

 produce adventitious buds on almost any part of the 

 root which may be severed from the crown ; hence if 



