THE GENERAL CHARACTERS OF SEEDS 



457 



Figure 316A Figure 316B Figure 316B 



Fig. 316. A, Storksbill or Alfilaria (Er -odium 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. E, the embryo removed from the seed 

 coats, the parts spread. 



B. Lady's Sorrel or Yellow Field Sorrel (Oxalis corniculata) . 



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



GERANIACEAE, GERANIUM FAMILY. 



Storksbill (Erodium cicutarium L'Her.). 



Lobes of capsule 1-seedecl, with elastic, dehiscent style, coiled at 

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

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

 in. in length without awn ; scar removed one-third length of seed 

 from base; groove from scar to tip of seed. 



EUPHORBIACEAE, SPURGE FAMILY. 



Three-seeded Mercury (Acalypha virginica L.). 



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

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

 Found in clover seed. 



b %&*. 



Figure 317A 



different 

 d, seed, 



Figure 317B 



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

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

 natural size. 

 B. Prostrate Spurge or Milk Spurge (.Euphorbia maculata). A. Different 

 views of seed. B. Seeds, natural size. 

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



