COLEOSPORIUM 327 
(2) CoLEosporium MeELampyri Karst. 
Uredo Melampyri Rebentisch, Flor. Neomarch. p. 355. 
Coleosporium Melampyri Karst. Myc. Fenn. iv. 62. Fischer, Ured. 
Schweiz, p. 440, f. 269. 
Peridermium Soraueri Kleb. Zeitschr. f. PAlanzenkr. iv. 194, 
The only apparent differences from C. Huphrasiae are in 
the size of the spores: uredospores 
24—35 x 21-28 w; teleutospores as 
much as 115y long, 21—28, wide; 
epispore very thick (up to 28) at the 
summit. 
AKcidia on leaves of Pinus silvestris ; 
uredo- and teleutospores on Melampy- 
rum arvense, M. pratense and _ its 
var. montanum, July—September, not 
uncommon. (Fig. 245.) 
Wagner records the ecidium also on Bt 
P. montana. Klebahn has demonstrated that 
the spores of this species will not infect 
Euphrasia, Rhinanthus, or Campanula. Ihave Fig, 245. C. Melampyri. 
not seen the thickening on the summit of the a, teleutospore on M. 
pratense, Randan Woods; 
teleutospores so pronounced in ours as in the i teloureapone on he 
continental specimens, possibly because they same, gathered at Bonn, 
were not so mature. Germany. 
Sincethe uredo-hosts of C. Rhinanthacearum 
are all annual and die at the approach of winter, it would seem probable 
that fresh infections must occur each year from the ecidium, but as this 
is, at any rate, not commonly found, the ecidiospores must be widely 
distributed by the wind; it is very possible, however, that the fungus 
winters in some other manner as yet unsuspected, or that the ecidia are 
more abundant than is thought to be the case. They should be searched 
for in Mayand June. There is here great scope for experimental research, 
especially since young pot-plants of Pinus can be used for infection. 
Klebahn placed such a Pine amongst a clump of Melampyrum, strongly 
infested with Col. Melampyr?, and left it from July to September (the pot 
sunk in the earth); in the latter month spermogones appeared and the 
wecidium (Peridermium Sorauert) in the following spring. 
DisTRiBuTION : Europe. 
