4 2 



CONNECTICUT GEOL. AND NAT. HIST. SURVEY. 



[Bull. 



Polygonum sagittatum. 



Sphacelotheca Hydropiperis. 

 Nymph.eace.e. 

 Nuphar advena. 



Entyloma Nymphcece. 

 Nymphaea odorata. 

 Entyloma Nymphcece. 

 Ranunculace^e. 



Anemone nemorosa. 



Urocystis Anemones. 

 Thalictrum polygamum. 

 Entyloma Thalictri. 



OxALIDACE.E. 



Oxalis stricta. 



Ustilago Oxalidis. 

 Solanace^:. 

 Physalis pubescens. 



Entyloma Physalidis. 

 Physalis Virginiana. 

 Entyloma Physalidis. 

 Scrophulariaceve. 

 Linaria vulgaris. 



Entyloma Linarice. 

 Veronica peregrina. 

 Entyloma Linarice 

 var. Veronicce. 

 Campanulace^e. 

 Lobelia inflata. 

 Entyloma Lobelice. 

 Composite. 



Ambrosia artemisiaefolia, 

 Entyloma polysporum. 



EXPLANATION OF FIGURES. 



Figs 1-20. Spores of various smuts, part of which are 



shown in optical cross section. Magnified about 650 diameters 



except where otherwise stated. 



Fig. 1. Ustilago longissinia from Glyceria grandis. 



Fig. 2. Ustilago Zece from Zea Mays. 



Fig. 3. Ustilago Oxalidis from Oxalis stricta. 



Fig. 4. Ustilago utriculosa from Polygonum Pennsylvanicum, 



Fig. 5. Sphacelotheca Sorghi from Sorghum vulgare ; a, 

 sterile cells of false membrane. 



Fig. 6. Sphacelotheca Hydropiperis from Polygonum sagit- 

 tatum ; a, sterile cells of false membrane. 



Fig. 7 Sorosporium Syntherismce from Cenchrus tribuloides; 

 a, spore ball magnified only about 100 diameters. 



Fig. 8. Cintractia Caricis from Carex Pennsylvanica. 



Fig. 9. Schiconella melanogramma from Carex Pennsyl- 

 vanica. 



Fig. 10. Tolyposporium bullatum from Panicum Crus-galli; 

 a, spore ball magnified only about 100 diameters. 



Fig. 11. Tilletia Maclagani from Panicum virgatum. 



Fig. 12. Tilletia Anthoxanthi from Anthoxanthum odora- 

 tum; a, sterile cell. 



Fig. 13. Neovossia Iozvensis from Phragmites communis. 



1 



