1 6 Setchell. — An Examination of the Species 
Distribution. Denmark, Rostrrip and Johanson ! Berlin, 
Germany, Sydow ! France, E. Cosson ! 
Literature. 
Entyloma hottoniae , Rostrup, in Thuem., Myc. Univ., No. 2222. 
1884. 
Doassansia hottoniae , De Toni, Journ. Myc., Vol. IV, p. 18. Mar. 
1888. 
De Toni, in Sacc., Syll. Fung., Vol. VII, p. 50 6. Oct. 
1888. 
Exsiccati. 
Entyloma hottoniae , Rostrup, in Thuem., Myc. Univ., No. 2222. 
1884! 
Rostrup, in Winter, Fung. Eur., No. 3403. 1886 ! 
Rostrup, in Roumegubre, Fung. Gallici Exs., No. 4727. 
1888! 
Sydow, Myc. March., No. 2322. 1888! 
Doassansia epilobii, Farlow. 
The present species, as far as is known, is strictly alpine, 
inhabiting the leaves of Epilobium alpinum in the White 
Mountains of New Hampshire. The tips of the leaves are 
the first portions affected, and the fungus is detected early 
by the dark sori showing through the tissues of the thin leaf. 
As the infected area spreads toward the base of the leaf, the 
older portions become at first a very pale yellow and then 
brownish, as the tissues are exhausted by the demands of the 
parasite. There is no distortion at all. The dark sori, 
visible through the very delicate leaf, have even more of the 
appearance of a Puccinia than have the rest of the species 
of Doassansia , and Farlow (Bot. Gaz., Vol. VIII, p. 276 ; 
Appalachia, Vol. Ill, p. 239) mistook it, when collecting it, for 
Puccinia epilobii. They are grouped together in small 
bunches of threes, fours, or fives, the larger, blacker, older 
ones nearer the tip, the smaller, light-brown, younger ones 
nearer the petiole. 
The mycelium spreads through the tissues of the diseased 
area of the leaf, being especially abundant near the sori. The 
