318 COLEOSPORIACE 
the Swiss Stone Pine, however, will equally serve as host, as has been 
shown by Tranzschel, and it has been found on that tree in Russia and in 
Switzerland. One of these countries was probably the original home of 
the parasite, from which it is spreading wherever its hosts will grow. 
This is one of the species with which attempts have been made to 
produce infection by the use of the abundant spermatia (Klebahn, 
Wirtsw. Rost. p. 387), but numerous trials on healthy Weymouth Pines 
were entirely without result. 
DistTRIBUTION: Europe (north of the Alps), Siberia, Japan, 
North America. 
‘ 
COLEOSPORIACE. 
AKcidium furnished with a peridium. Spermogones sub- 
epidermal, flattish, linear, without ostiolar filaments, dehiscing 
by a slit. Teleutospores in one (more rarely two) subepidermal 
layers, dividing as they mature into four superimposed cells, 
each of which germinates by a sterigma bearing one basidio- 
spore. 
CoLEospoRIE&. Hetercecious. 
fcidia (Peridermium) more or less cylindrical, with inflated 
peridium, irregularly torn at summit. Uredospores abstricted 
in chains. Teleutospores with a strongly thickened gelatinous 
wall above. Basidiospores ovate. Coleosporium. 
OcHRoPsOREH. Hetercecious. 
Aicidia with cup-shaped peridium. Uredospores abstricted singly. 
Teleutospores thin-walled. Basidiospores fusiform. 
Ochropsora, 
ZAGHOUANIEH. Autcecious. 
For the present, the abnormal genus Zayhouania may be arranged 
as a subfamily of the Coleosporiacew; it is distinguished 
especially by the fact that the four-celled basidium is formed 
internally, but emerges from the teleutospore before the 
formation of the round basidiospores. See p. 331. 
Zaghouania, 
The internal “basidium” which has been considered as a 
character of this family is not confined to it, being found also 
in Chrysopsora, which belongs to the Pucciniacex. It is 
remarkable that no species of the family has up till now been 
discovered in Australia, while only one of the Eurasian species 
