THE GENERAL. CHARACTERS OP SEEDS 



465 



Clover Dodder {G'uscuta epithymvm Murr.). 



Seed spherical or subspherical, one-thirtieth to one-twenty-fourth 

 jfi. in diameter ; surface roughened, with appearance of sponginess, 

 dull, usually ashy, yellowish to light or dark brown, or purplish; 

 embryo coiled, without cotyledons, consisting of slender tapering 



Pig. 32S." ' Clover Dodder (Cuscuta epUJiymum) . A, a, group showing various 

 forms and vi^ws of seeds. B and C, seeds having, the scurfy appearance. 

 D and E shove the angled, scar-bearing face, B, being one of the light- 

 colored, sterile seeds. F, a, torn, dried flower having the seed-vessel intact. 

 G, the embryo. H, group of seeds showing the natural siie. 

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



body, with cauliele and i*adicle embedded in fleshy endosperm. 

 Commonly distributed in seed of clovers and alfalfa. Brown and 

 Hillman state that this dodder is almost entirely confined to Euro- 

 pean grown seed, since the plant does not generally produce seed 

 in this country. 



Chilean Dodder {Cuscuta sp.) 



Seeds spherical to subspherical or oval, inclined to be more angu- 

 lar than the preceding,spe,cies, flattened on one side, one-seventeenth 

 to one-fifteenth in. in diameter, about the size of large field dodder 

 seeds; dull brownish, minutely roughened; scar prominent, at end 

 of^ flattened surface, lighter in color than rest of seed. Found in 

 both clover and alfalfa seed, from which it is screened with dif- 

 ficulty; 



Fig. 329. Chilean Dodder .( CitsoMSo chUensis).. 

 CDrdwing, after Burotiard.) 



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