WKEDS IX THE MEADOW. 



233 



to lie annoying m meadows oc pastures, but the seeds are not 

 uiifrequeutly found mixed with those of grasses and clovers. 



Fig. 122. Pi)Ujg<)iiH»i 

 arh-nlarr, L., (Knot- 

 grass. Doorweed.) 1 

 + 8.-(Suil\vorth.) 



Fig. V£i. Ruinex crispua, L. 

 (Narrow Dock.) Two views. 

 1 X 11.— (Sudworth.) 



Fio. 134. Euphorbia 

 Cfiparissias, L. Two 

 views. 1 X 10. — (Sud- 

 worth.) 



Fig. 135. Enphorhia 

 niaculata, L. (Spot- 

 ted Spurge.) A creep- 

 ing weed. Two views. 

 1 X 1,5. —(Sudworth.) 



Pig. 126. Urtica di- 

 oicn, L. (Great sting- 

 ing nettle.) This has 

 spread over low land 

 meadows in some pla- 

 ces. 1 X 15. — (Sud- 

 worth, ) 



Fig. 137. Brnmiis sec- 

 alimis, L. Chess de- 

 prived of glume and 

 palea.) Ixo. — (Sud- 

 worth . ) 



Polygonum Persicaria. L. (Lady's Tliumb,) and some other 

 species of PoJijgonnin have smooth, bhick iiat seeds. 



Polygonum, aciculare, L, (Knot-grass) and some others have 

 triangular seeds, shaped much like small grains of buckwheat. 

 The seeds of these two species, and of others, are often found 

 among grass seeds. 



Rumexcrhpu^is L. (Curled or Xarrow Dock) and R. ohiusif alius, 

 L. (Bitter Dock) are both common and troublesome weeds in 

 meadows. They are perennial and have long tap roots. The 

 seeds are three angled and like those of Polygonnin. 



Rwnex Acetosella, L. (Sheep sorrel) is very common on poor, 

 light land. The seed has the shape of the species last named. 



Euphorhin Cyparis^tias. L. (Euphorbia) has escaped from culti- 

 vation. It roots deeply, and has in some places become a great 

 pest. 



Occasionalh' seeds f»f common eliess, or clieat, are met witli in 



