Parasitic Fungi of Illinois. 228 
ever, in the same way. The spores have thinner walls, are 
hghter colored, and are said to be more elongated. In the lat- 
ter respect, however, the specimens collected by Arthur have 
spores commonly quadrangular, and considerably longer than 
wide. A Massachusetts specimen agrees with the typical 4. 
punctatum except that the spermagonia are confined to the 
lower side of the leaf. That on Hepatica triloba is distinctively 
Ay. punctatun. 
ZB, acteeee, (Opiz.) Wallr. 
®eidia orderless or in circular groups, on pale spots which 
later are blackish in the centre; pseudoperidia short-cylindrical, 
with a white tube and many times split and recurved border; 
spores polygonal, pale yellow, fine-warty, 16-26 « in diameter 
by 30 ».—Winter, Die Pilze, p. 268. 
On Actea: Jackson, April 25, 4288. 
The description is taken from European specimens; those 
from Illinois are not fully developed, but seem to be the same. 
AS. dicentre, Trelease. 
Hypophyllous. icidia uniformly and remotely scattered 
over the entire surface, rather large, prominent, border regu- 
larly segmented and quite uniformly and abruptly rolled, firm; 
spores subglobose or elliptical, epispore thin, minutely tubercu- 
late, 10-13 by 11-16 uw; spermagonia large, disk-like, rather 
distant in a single row on the margin of the leaf, reddish brown. 
On Dicentra cucullaria: Jackson, April 20, 4195, April 21, 
4211, April 25, 4289, April 27, 4345, April 28, 4360; Union, 
April 24, 4252; McLean, May 22, 4731, May 23, 4793. 
ZB. Marize-Wilsoni, Peck. 
Hypogenous. Spots small, definite, not thickened, yellow- 
ish; ecidia small, short-cylindrical, border narrow, many times 
split and recurved, subcircinating; spores subglobose or some- 
what angular, epispore thin, minutely tuberculate, 11-15 4; 
spermagonia preceding and, with the ecidia, mostly on the 
upper side of the leaf. 
