THE GENERAL. CHARACTERS OP SEEDS 459 



MALVACEAE. MALLOW FAMILY. 



Velvet-leaf, Butterprint {AbutUon theophrasti Medic.)- 



Carpels 2-valved, beaked, each usually 2-seeded; seeds somewhat 

 triangular, kidney-shaped, one-eighth in. in length, minutely granu- 

 lar and pubescent; color blackish gray; funicle extending to notch 

 of seed. May occur in small grain. 



c 



Figure 320A Figure 320B 



Fig. 320. A. Indian Mallow or Butterprint {Abntilon theophrasti). a, b, c, 

 different views of seed ; d, cross section showing embryo and caulicle ; e, 

 seeds, natural size. 



B. Seeds of Bladder Ketmia. a and b, different views, u, naturEH pize, 



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



Prickly Sida {Sida spinosa L.). 



Seeds oval, one-sixteenth to one-twelfth in. long, one face con- 

 vex, the other with a prominent ridge across its length ; scar at 

 broad end ; surface dull, smooth ; color brownish. Reported in seed 

 of Missouri red clover. 



» 



«■ 



Fig. 321. Prickly Slda ^Sida spinosa). A, different views of seeds. B, a. seed 

 in section taken midway between tbe two extremities, showing embryo and 

 caulicle. C, seeds, natural size. 



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



