8 



White and Alsike Clover Seed. [april, 



any difference between the seeds of the two kinds, it cannot be 

 in any sense guaranteed true to name. 



White clover seed should be used in all seed mixtures for per- 

 manent pasture and in leys of temporary duration ; when they 

 are to remain down for more than one year, though the yield is 

 small, it is much more permanent than either red clover or Alsike. 

 Some of the weed seeds (see illustration p. 9) common both 

 to white clover and Alsike are here represented magnified six 

 diameters : — Sheep's sorrel {Rinnex Acetoselld), round-leaved 

 Cranesbill {Geraniinn molle), Ox-eye daisy (Chrysanthemum 

 Leucanthemum^, GoosQ4oot(Chejtopodi?im album), Poppy {Papaver 

 Rhceus), Field pansy ( Viola tricoloi^'). Chick weed {Cerastium 

 triviale). Pepper grass {Lepidium virginicum), the latter fairly 

 common in American seeds. Ordinary rib grass, as illustrated 

 in the article on red clover,* is also found in more or less abun- 

 dance in many samples of white clover and Alsike. 



Fig. I.— W^hite Clover (plump, uniform sample ; magnified seven diameters). 



The seeds of dodder are rarely found in white clover. 



The seeds of white clover are somewhat similar in shape to 

 those of Alsike (see illustration p. 9), though slightly smaller. 

 They are heart-shaped in appearance, and in new fresh seed the 

 bright sulphur or orange-yellow colour is a characteristic feature. 

 Seeds, which are reddish-brown, broken, thin, weevil-eaten, and 

 imperfectly developed, are a fairly common feature of medium 

 or low grade samples. 



It is possible, as a rule, to estimate pretty accurately the in- 



* Journal^ March, 1906, p. 718. 



