PROPAGATION OF CITRUS TREES. 



169 



Trifoliate Orange. Ovoid, 

 pointed or rounded, some- 

 times plano-convex, smooth 

 or when somewhat dry the 

 outer integument contracts, 

 giving a wrinkled appear- 

 ance. One-half inch long x 

 1-4 inch wide x 1-8 inch 

 thick; usually quite uniform 

 in size and shape; embryo 

 one, cotyledons two. The 

 others contain one or more! 

 embryos and two or more 

 cotyledons. 



Sweet Orange. Oblong- 

 ovoid, plano-convex or round- 

 ish and plump, sometimes 

 very slightly beaked; 9-16 



Fig. 40. Six seeds each of pomelo trifoliate orange, sweet orange 



rough lemon sour orange arranged in the order named. 



(Natural size.) 



inch long x 5-16 inch wide x 1-4 inch thick, 1-2 inch long x 

 5-16 inch wide x 1-4 inch thick, or larger; lines not promi- 



