VARIOUS FOOD-PLANTS 



97 



Fig. lOG.^ — -Onuigc (Citru8 Annuili/f/n) and Lemon {(.'. mcdica, var. Limonum, 

 Rue Family, Rutacca). A-F, (Jrange. .i, flo-wering branch. B, 

 flower, central part, cut vertically and enlarged. C, pollen grains, 

 much magnified. D, ovary, cut across. E, seed, cut vertically. F, 

 seed, cut across. G-L, Lemon. O, flowering branch. H, flower, with 

 petals removed, enlarged. ./, anther, front view. A', same, back view. 

 L, ovary, cut vertically, enlarged. (Berg and Schmidt.) — Both plants 

 are small trees or shrubs with evergreen aromatic leaves and smooth 

 stems; flowers white in the orange, and tinged with pink in the lemon; 

 fruit with thick aromatic rind, and seeds imbedded in a pulp consisting 

 of internal hairs swollen with a more or less acid juice. 



