[Vol. 2, 1915] 



730 ANNALS OF THE MISSOURI BOTANICAL GARDEN 



Explanation of Plate 



PLATE 25 



Fig. 18. Sporophore of F. igniarius growing on beech trunk. 



Fig. 19. View of upper surface and section through a sporophore 



of F. fraxinophilus. 



Fig. 20. Section through a typical sporophore of F. igniarius var. 



nigricans. Note the strongly white incrusted layers of 

 tubes and context. 



Fig. 21. Surface view of the same specimen of F. igniarius var. 



nigricans. 



Fig. 22. Sporophores of F. ohiensw. 



Fig. 23. F. Ellisianus, showing rugose upper surface and section of 



hymenium with long tubes. 



Fig. 24. Sporophores of F. scutellatus on limbs of alder. 



