THE GENERAL, CHARACTERS OF SEEDS 



457 



Figure 316A 



Figure 316B 



Figure 316B 



Fig. 316. A, Storksbill or Alfllaria (.Erodium cicutarium) ; A, a seed-vessel 

 with a portion of its spirally coiled awn. B, a seed-vessel and its awn, 

 natural size. (In many the awn is smaller.) C, a seed, magnified. D, a 

 line showing the length of the seed. B, the embryo removed from the seed 

 coats, the parts spread. 



B. Lady's Sorrel or Yellow Field Sorrel (.Oscalis cornioulata) . 



(A, after Hillman, Bull. Mich. Agr. Exp. Sta. ; B, drawings by C. M. King.) 



GERANIACEAE, GERANIUM FAMILY. 



Storksbill {Erodiwm cicutarium L'Her.). 



Lobes of. capsule l-sepded, with elastic, dehiscent style, coiled at 

 maturity, villpus inside ; hairs at base pointing obliquely upwardly ; 

 awn coiled for half its length; seed broadly club-shaped, one-fifth 

 in. in length without awn ; soar removed one-'thifd length of seed 

 from base; groove from scar to tip of seed. 



:.!;o 



EUPHORBIACEAE, SPURGE FAMILY. 



Three-seeded Mercury {Acalypha virginica Ij.).> 



Seeds ovoid; one-twelfth to one^twentieth in. long; reddish, min- 

 utely striate, line running from apex to base ; soar at smaller end. 

 Pound in clover seed. 



h ^- 



Figure 317A 



Figure 317B 



Fig. 317. A. Three-seeded Mercury (.Acalypha virginica). a and b, different 



views of seed ; c, sectional view showing embryo and endosperm ; d, seed, 



natural size. . ■ ' ' - 



B. Prostrate Spurge or Milk Spurge (EupJiQrbia maculata)., A, Piffierent 



views of seed. B. Seeds, natural size. 



(After Hillman, Bull. Mich. Agr. Exp. Sta.) 



