Bui. 183, U. S. Dept. of Agricultu 
Plate I. 
Photomicrograph of a Longitudinal Section of a Barley Ovary Immediately 
after Fertilization. 
The two plumose stigmas do not appear, a. Outer epidermis of ovary; b, colorless parenchyma; c, 
chlorophyll -bearing parenchyma; d, inner epidermis of ovary; e, outer integument of" ovule; 
/, inner integument of ovule;'<7, external layer of the nucellus; h, nucellar tissue; i, group of en- 
dosperm-forming cells of the young embryo sac. 
