40 Setchell. — An Examination of the Species 
Season. Kunze’s specimens were collected in the autumn. 
Schroeter further says ( 1 . c.) July to September. 
Distribution. Known only from Germany. Saxony, 
Kunze ! several localities in Silesia, Schroeter. 
Literature. 
Protomyces limosellae , Kunze, in Rab., Fung. Eur., No. 1694. 1873. 
Entyloma limosellae , Winter, Pilze, Abth. I, p. 115. 1884. 
Doassansia limosellae , Schroeter, Pilzfl. Schles., p. 287. 1887. 
— De Toni, Journ. Myc., Vol. IV, p. 17. Mar. 1888. 
De Toni, in Sacc., Syll. Fung., Vol. VII, p. 505. Oct. 1888. 
Exsiceati. 
Protomyces limosellae , Kunze, in Rab,, Fung. Eur., No. 1694. 
1873! 
Doassansia decipiens, Winter. 
I am indebted to Mr. E. A. Rau, the discoverer of this 
4 interesting but doubtful species 5 as Winter calls it, for 
excellent dried material of the original collection from New 
Jersey. Although it has been searched for carefully in 
Eastern Massachusetts and Connecticut on the same host, 
no trace of it has been seen. Consequently no fresh material 
has been available for study. 
Doassansia decipiens is parasitic in the leaves of Limnanthe- 
mum lacunosum , and produces on them circular spots of a 
dull yellow colour. In dried specimens the sori appear very 
distinct in the form of small, dark-brown warts scattered 
irregularly through the spot. There is no distortion of the 
leaf at all. 
The cross-section of a leaf shows that there are three 
distinct rows of palisade-cells, and below these, several layers 
of very loose spongy parenchyma. In the region of the spot 
all of these layers abound with the hyphae of the fungus. 
They are very slender (2 p, to 3 ju, thick), moderately branching, 
and very much intertwined in places. Under the stomata 
one generally finds bunches of entangled hyphae, the early 
stages in the development of the sori. 
