Fig. 16. 
Explanation of Figures. 
Figs. 12, 13 and 14. Plants, natural size. Fig. 15, Section. P'ig. 16. 
Spores (x 1000.) All from E. P. Ely, Dallas, Texas. The bottom of figure 12 is 
cut off by limitation of plate. 
SECOTIUM MACROSPORUM. 
