THE ORANGE IN CALIFORNIA VARIETIES. 



49 



THE ORANGE. 



THE SWEET ORANGE. 



Citrus aurantium dulces, Linn. 



The sweet orange belongs to the natural order Aurantiacze, 

 and the origin of the different members of this citrus family 



2.... 



A. Compourfd unifoliate leaf of the orange (Cit- 

 rus aurantium). 1. Point of union, marked by ail 

 articulation: 2. Petiole, winged on either side; 

 3. Lamina; 4. Flowering branch of Citrus bigaradia; 

 Sand 6. The fruit; 7. Flower complete; 8. Pistil; 

 9. Transverse section of ovary. (After Haldane.) 



is extremely doubtful, having been cultivated from a remote 

 period of antiquity, but is supposed to belong originally to 

 China and India. 

 4c 



