212 Illinois State Laboratory of Natural History. 
by different authors assigned to Calyptospora, Melanpsorella, 
Phragmospora and Thekopsora. Admitting all these as genera 
of equal rank, the characteristics may be given as follows: 
Teleutospores produced beneath the cells of the epidermis: 
Teleutospores one-celled................ MzLampsora. 
Teleutospores divided...............-. PHRAGMOSPORA. 
Teleutospores produced ‘7 the cells of the epidermis. 
Teleutospores one-celled, colorless. .... MELAMPSORELLA. 
Teleutospores divided, colored: 
Sori small, with uredo.............. THEKOPSORA, 
Sori broadly confluent or effused, without uredo, 
CALYPTOSPORA. 
With the single exception of Melampsora Geppertiana 
(Calyptospora Gappertiana, Kithn) on various species of Vic- 
cinium, no supposed ecidium form has been found; in this 
case the almost universal association of the teleutoform on 
Vaccinium, and one or more species of Peridermium on Pinus 
and Abies, seems to strongly indicate their genetic relation. 
Other observations corroborate the supposed connection, so that, 
in Europe at least, we may accept the matter as a fact that this 
species of Melanepsora and Aicidinm (Perideriminim ) columnare, 
Alb. & Schw., are alternate forms. In America, Peridermium 
balsamenim, Peck, seems to be associated with the teleutoform, 
but whether P. balsamewn and P. columnare are specifically 
identical has not been determined. See Farlow, Appalachia, 
Vol. TIT. (1884) p. 241 et sey. 
M. epilobii, (Pers.) Fk. 
Il., III. Hypogenous. Uredosori scattered, minute, hemi- 
spherical, then opening by a circular stoma; uredospores obo- 
vate, sometimes varying to subglobose and oblong, epispore 
thin, sharply echinulate, each produced on a pedicel, orange- 
yellow, 12-15 by 14-18 »; teleutosori irregular, scattered, often 
confluent in irregular crust-like areas, becoming dhestuat. 
brown, or at length darker; teleutospores mostly one-celled, 
often divided by a septum which is horizontal, oblique, or ver- 
tical, cuboidal or elongated, epispore thin, smooth, 21-89 » long. 
