BASIDIA-BEARING FUNGI (sMUTs) 1 85 



various parts of the host, usually in the ovaries, where are formed a 

 dusty dark spore mass. The spores are simple, separate and originate 

 singly at the ends of special h^-phae, which almost disappear through 

 gelatinization. The spores varies in size from ibii to 35/i. Fifteen out 

 of the fifty-three species recorded by Saccardo have been found in 

 North America. The important species are Tilletia fcetens bunt or 

 stinking smut of wheat; Tilletia tritici on wheat; Tilletia horfida 

 in the ovaries of cultivated rice; Tilletia anthoxanthi in the ova- 

 ries of the sweet vernal grass, Anthoxanthum odoratum; and Tilletia 

 Madagani on a wild grass, Panicum vigatum. Urocystis cepidte is the 

 onion smut; Urocystis occulta on the stems and sheaths of rye; Urocystis 

 viol<e on the stems, rootstocks, petioles and leaves of violets, Entyloma 

 crastophilum levis on such grasses as Agrostis, Poa, E. EUisii forms pale 

 white spots on spinach leaves in New Jersey. Entyloma litieaium grows 

 on wild rice, Zizania aquatica; Entyloma thalictri on the meadow rice, 

 Thalictrum polygamum; Entyloma lobdics or Lobelia inflata; Entyloma 

 nymph/Bce on the leaves of Xuphar advena and Nympheea odoraia. 



The species of Doassansia mostly grow on plants, such as: Sagit- 

 taria, Potatnogeton, etc., growing in moist situations. Ten species 

 occur in North America. 



BIBLIOGRAPHY OF THE SMUTS 



Akihcr, J. B.: Kapid Method for Removing Smut from Seed Oats. Bull. 103, 

 vol. xii, Agric. Exper. Stat. Purdue University, March, 1905. 



Clinton, G. P.: The Smuts of Illinois Agricultural Plants. BulL S7. Agric. Exper. 

 Stat. Urbana, March, 1900. 



Clinton, G. P.: North American Ustilaginese. Journal of Mycolog>% 8: 128-136, 

 October, 1902 



Clinton, Geokge P.: North American Ustilaginex, Proceedings Boston Society 

 of Natural History, 31; 504, 1904. 



Clinton, George P.: The Ustilagineae, or Smuts, of Connecticut. Bull. 5, 

 State Geological and Natural History Surs'ej', 1905. 



Clinton, George P.: Ustilaginales (Ustilaginaceje, Tilletiacete). North American 

 Flora, 7, part I; 1-82, Oct. 4, 1906. 



DiETEL, P.: Hemibasidii. Die naturlichen Fflanzenfamilien, I. Teil, AbL 1, 

 1900: 2—24. 



DUGG.4R, B. M.. Fungous Diseases of Plants, 1909: 370-383. 



Eriksson, Jakob: Fungoid Diseases of Agricultural Plants, 1912: 44-62. 



Garrett, A. O.: The Smuts and Rusts of Utah. Mycolt^a, U: 265-304, No- 

 vember, 1910. 



