114 
FUNGI. 
spores are exactly like those on the teleutospores of Triphragmium 
clavellosum. Berk., and when the spores are three-celled, are indis- 
tinguishable from those of the last-named species, and I am not 
certain whether Cooke was not nearer the truth in referring the 
species to Triphragmium, than was Magnus in making it the tjpe 
of a new genus. 
Triphragmium ulm arise, Link {in part), {Figs. 2 and 3). 
Teleutospores. Sori hvpophyllous and, on the petioles, small, 
gregarious, blackish-brown, more or less pulverulent ; teleuto- 
spores subglobose or broadly and obtusely obovate, usually con- 
sisting of three cells radiately disposed, 35-55 x 24-35 p, sometimes 
consisting of two superposed cells, or of one cell only ; epispore 
varying from being rather coarsely tuberculose to perfectly smooth ; 
pedicel equal to or a little longer than the spore, rather stout, hya- 
line, persistent. 
Primary uredospores. Forming deep orange, powdery, extended 
patches on petioles, or hypophyllous, usually following the veins ; 
spores subglobose, elliptical, or broadly obovate, minutely verrucu- 
lose, bright orange, 18-35 x 15-24 p ; pedicel short, hyaline. Ap- 
pearing in spring. 
Secondary uredospores. Sori hypophyllous, small, scattered, 
Teleutospores or T-riphragmium, 
