298 Wisconsin Academy of Sciences, Arts, and Letters. 
to be poor in this collection. One sporule was seen having a third 
septum in the middle. 
RamiClaria canadensis Ell. & Evht. On Carex sp. indet. Edger- 
ton. In this collection the subulate conidiophores range up to 65/x 
in length, the conidia are fusiform, acute at each end, 16-23x3i/^-4ju. 
In a collection on an undetermined species of Carex made at Madi¬ 
son in 1912 the conidia are oblong, acute, at least at one end, 
20-30x4-6ja. In both collections the conidia develop a median 
septum. 
Cladosporium caducum n. sp. 
Spots hypophyllous, at first pale olivaceous, becoming yellow, 
finally brown, indeterminate, suborbicular, 1-4 mm. in diameter, 
when old showing on the upper surface; ponidiophores hypophyl¬ 
lous, scattered or exceptionally in twos or very small fascicles, deep 
brown, ascending to erect, 3-4 septate, sometimes branched, often 
paler and torulose apically, 50-80x3i/^-4/x; conidia acro-pleuro- 
genous, fuligenous or brown, limoniform, apiculate or acute and 
narrowly truncate at the extremities, sometimes catenulate and 
the chains sometimes branched, continuous, 10-15x4-7jtA. On leaves 
of Betula nigra along the Wisconsin river. The spots are usually 
multiple, the infected leaves fall and considerable defoliation is 
sometimes caused. This seems near Cladosporium but I have 
not seen septa in the conidia. They resemble those @f Monilia in 
form. Although the parasite is abundant on the bottom lands and 
its effects conspicuous I have found it difficult to get good speci¬ 
mens as the conidiophores are very inconspicuous and soon fall, 
away. The best specimens were obtained in July. 
Cladotrichum leersiae Atk. On Leersia oryzoides. Blue River. 
In this collection oval, pale-avellaneous immarginate spots are pro¬ 
duced which are sometimes confiuent. The conidia are 13-17/x 
in length and sometimes germinate without the formation of a 
septum. 
Napicladium arundinaceum (Cda.) Saec. On Phragmites com¬ 
munis. Madison. 
Cercospora crassoides n. sp. 
Spots orbicular, alutaceous with a broad dark purple border, 
less distinct on the lanose lower surface of the leaf; conidiophores 
epiphyllous, sometimes a few on the lower surface, ferruginous, sub- 
