437 
obovate, sessile, 30-40 y 18-21 yp. Sporidia crowded, oblong- 
elliptical, about 20 x 7-8 », often slightly curved, obtuse, yellow- 
ish-hyaline and mostly uniseptate at first, finally brown and bisep- 
tate, the septa hyaline. 
Very different from A. depidigena E. & M. on the same host. 
On leaves of Andromeda Jerruginea. No. 1939. 
SEPTORIA QUERCICOLA Sacc. Mich., 1: 174; Syll. 3: $05. 
_ Spots orbicular, 1-2 mm. diam., dirty-white with a dark mar- 
gin, or ferruginous, larger and irregular. Perithecia amphigenous 
ut more distinct above; on the white spots, mostly only one in 
the center of the spot; on the larger ferruginous spots, more 
Numerous and _ scattered. Sporules cylindrical, curved,, sub- 
attenuate at the ends, 3-septate, 25-40 X 3, w. Var. cinerceaE. & 
+» On leaves of Quercus cinerea, differs only in its longer (40~- 
60), 3-6-septate sporidia. 
On Quercus sp. No. 2091. 
Dartuca arcuata E. & E. 
Perithecia globose, 75-100 » diam. Sporules arcuate-fusoid, 
hyaline, 3-septate, not constricted, 14-162 Ya-3 pe. 
Distinguished from the other species of this genus by its 
arcuate sporules. 
Parasitic on Uredo, on leaves of Andropogon? No. 1837. 
CoLterorricnum CoMMELINAE. 
Spots dark brown, suborbicular, 2-3 mm. diam., sub-indefi- 
Nite, paler and more obscure below. Acervuliabout 100 # diam., 
tinged with dark brown, obscurely septate hairs 4-5 p thick 
below and tapering above, 60-75 » long. Conidia oblong, hyaline 
Continuous, 12-164-5 p, a little narrower at one end. 
On leaves of Commelina angustifolia. No. 1798. 
Cotterorricnum Eryturinak E. & E. 
_ Spots orbicular, rust-color, with the margin darker, y% cm. 
lam. Acervuli epiphyllous, erumpent-superficial, 150-200 4, 
diam. loosely clothed with simple, brown, sparingly septate hairs 
70-100 X 3-4 p. Conidia oblong—cylindrical, hyaline, continuous, 
14-16 X 3%, fhe 
Differs from C. Commelinae in its larger spots and narrower 
Sporules, 
On leaves of Exythrina herbacea. No. 2123. 
Cotterorricuum Azae& E. & E. ab cette 
Spots dark rusty-brown, orbicular, 3-8 mm. diam., definite, wi 
