30 Setchell. — An Examination of the Species 
may be due to the more abundant nourishment which is sup- 
plied by the young starch-laden cells of the endocarp. The 
presence of conidia seems to be characteristic of D. Mar- 
tianoffiana. They have not been found in D. occulta , even 
after careful search. In view of the absence of satisfactory 
information on these points, as well as on the subject of the 
germination of D. Martianoffiana , it seems best to keep the 
two forms distinct for the present. 
Season. Johanson’s specimens were collected in the month 
of September. Schroeter also gives this month. 
Distribution. Siberia, Martianoff\ Germany, Schroeter ; 
Sweden, Johanson ! What appear to be young specimens 
of the same species have been sent to Prof. Farlow by James 
Fletcher from Ottawa, Canada ! 
Literature. 
Protomyces Martianoffianus , Thuem., Beitr. z. Pilzfl. Sibil*. II, No. 123 
[Extr. Bull. Imp. Soc. Nat. d. Moscow, T. 53, 1, p. 207]. 1878. 
Doassansia Martianoffiana , Schroeter, Pilzfl. Schles., p. 287. 1887 
(in part). 
Protomyces Martianoffianus , Berl. et De Toni, in Sacc., Syll. Fung., 
Vol. VII, p. 320. Mar. 1888. 
Doassansia Martianoffiana , De Toni, Journ. Myc., Vol. IV, p. 16. 
Mar. 1888. 
De Toni, in Sacc., Syll. Fung., Vol. VII, p. 504. Oct. 1888. 
Exsiccati. 
Doassansia Martianoffiana , Johanson, in Eriksson, Fung. Par. Scand., 
No. 264. 1888 ! 
Johanson, in Pazschke, Fung. Eur. No. 3602. 1890 ! 
Doassansia deformans, sp. n. 
Sagittaria variabilis has proved a most fruitful host for 
species of Doassansia in the United States. Three species 
have already been enumerated as occurring upon it ; and in 
the present species, the fourth and most conspicuous of all 
is added. It is, in all respects, abundantly distinct from any of 
the other species already described upon the same host. 
