No. 5.] USTILAGINE.E OF CONNECTICUT. 43 



Fig. 14. Urocystis Cepuloe from Allium Cepa. 



Fig. 15. Urocystis occulta from Secale cercale. 



Fig. 16. Entyloma lineatum from Zizania aquatica. 



Fig. 17. Entyloma Lobelia from Lobelia inflata. 



Fig. 18. Entyloma Nymphcece from Nymphcca odorata. 



Fig. 19. Doassansia opaca from Sagittaria variabilis. This 



is a cross section of a spore ball merely showing one end ; 



a, superficial cortex of sterile cells ; b, spores filling the 



interior of ball. 

 Fig. 20. Tracya Lemnaz from Spirodela polyrrhiza. This is 



a cross section of a spore ball merely showing one end ; 



a, superficial layer of spores ;. b, sterile hyphae filling in- 

 terior of ball. 



Figs. 21-25. Germination of spores of smuts. Magnified 

 about 650 diameters. 



Fig. 21. Germination of spore of Ustilago utriculosa from 

 Polygonum Pcnnsylvanicum in water; a, promycelium; 



b, sporidia. 



Fig. 22. Germination of spore of Doassansia opaca from Sag- 

 ittaria variabilis in water ; a, promycelium ; b, sporidia ; 



c, secondary sporidia fallen off. 



Fig. 23. Germination of spore of Ustilago Avence from Ave- 



na sativa in horse dung; a, promycelium; b, infection 



threads. 

 Fig. 24. Germination of a sporidium of Ustilago Sorghi into 



an infection thread. 

 Fig. 25. Small portion of a group of sporidia developed from 



promycelium of Tolyposporium Eriocauli in potato agar. 

 Fig. 26. Cross section of epicotyl of broom corn infected 

 by Ustilago Sorghi; a, epidermal cells ; b, parenchyma cells of 

 cortex ; c, woody cells of central cylinder, and d, mycelium of 

 the fungus ramifying through the parenchyma cells of the 

 cortex. Magnified about 125 times. 



Figs. 27-55. Sori of various smuts, showing general ap- 

 pearance and parts of different hosts infected. Natural size 

 except where otherwise indicated. 



