Bul. 183, U. S. Dept. of Agriculture. PLATE |. 
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PHOTOMICROGRAPH OF A LONGITUDINAL SECTION OF A BARLEY OVARY IMMEDIATELY 
AFTER FERTILIZATION. 
The two plumosestigmas 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; 
f, inner integument of ovule; g, external layer of the nucellus; h, nucellar tissue; i, group of en- 
dosperm-forming cells of the young embryo sac. 
