Ohio Nattralist. 



Plate XXII. 



Cook on " Caryophyllaceae." 



Explanation of Plate XXII. 



Fig. 1. Filamentous embryo of Vaccaria vaccaria. 



Fig. 2. Eight nucleate embryo sac of Silene conoidea showing the egg, 



one symergid, two antipodals, and the endosperm nucleus. 

 Fig. 3. Embryo sac of S. conoidea with filamentous embryo and endosperm. 

 Fig. 4. Normal embryo of S. conoidea. 



Fig. 5. Disintegration of the basal cell of the embryo of S. conoidea. 

 Fig. 6. Abnormal embryo of S. conoidea. 



Agricultural Experiment Station, Newark, Delaware. 



