THE GENERAL CHARACTERS OF SEEDS 



451 



Figure 305A 



Figure 305D 





Figure 305C 



Fig. 305. A. White Clover (Trifolium repens). a, enlarged; b, natural size. 



B. Alsike Clover (Trifolium hybridum). a, enlarged; b, natural siae. 



C. Red Clover (Trifolium pratense). a, enlarged; b, natural size. 



D. Low Hop Clover (Trifolium procumbens). a, enlarged; b, opposite face; c, 



flower ; d, seeds, natural size. 



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



Red Clover (Trifolium pratense L.). 



Seeds roughy triangular, with angles rounded ; no two sides equal 

 length, sides somewhat convex with rounded edges, one-sixteenth 

 to one-tenth in. long; color light yellow, purple, or of yellow and 

 purple ; old seeds more brownish ; sear near radicle, which is not 

 so prominent as in other clovers ; the seeds of mammoth clover re- 

 semble those of red clover but are usually larger. 



Low Hop Clover (Trifolium procumbens L.). 



Seed light brown, shining, oval, length 1-1.3 mm., width 0.6 mm. ; 

 scar in a notch a short distance from one end. 



Sweet Clover, Bokhara Clover (Melilotus alba Desv.). 



Seeds contained in an ovoid pod, one-twelfth to one-fifteenth in. 

 long, reticulated, nearly smooth, elliptical, somewhat triangular, 

 variable ; color yellowish to greenish, scar brown in color ; micropi- 

 lar processes near scar, not conspicuous. Found in seeds of alfalfa 

 and clover. 



