115 
finally open, with an erect, snbentire margin, .33-.5"^'"* in diameter, 
whitening out; component cells witli a more or less distinct striate 
margin; spores subglobose, about 20fJ. in diameter, orange. The 
portion of the leaf occupied by the fungus, generally a small marginal 
area .75-.5*^™" in diameter, is slightly thickened, 
Phyllosticta Cornuti. — Peritliecia minute (70//), black, thickly 
scattered on indistinct brownish spots (2-3"^'"') nearly round or lim- 
ited by the veinlets of the leaf, subangular and of Irregular outline 
and more or less confluent; spores oblong-cylindric, about 3x1/^. 
On withered or dead leaves of Asclepias Cornuti. Aug. No. 620. 
Phyllosticta verbascicola. — On large, brown, rather indefin- 
itely limited spots, i.5-i*^'"-' across, or, by confluence, 2-4^™-, occupying 
large irregular areas of the leaf. Perithecia buried in the substance 
of the leaf, 100-150^^ in diameter and filled with abundant subhyaline 
or brownish tinted, oblong-elliptical spores, mostly 3.5-4^^.5-2//, 
with a few darker and larger. 
On leaves of Verbasciim Thapsus. July. No. 587. 
P. Verbasci, Sacc, is on small bleached spots and has spores 
6x3/^, slightly constricted in the middle, 
Septoria Leptostachya. — Perithecia amphigenous, punctiform 
minute, black, scattered on pale brown spots 2-4™™' in diameter, 
limited in part by the veinlets of the leaf, and without any very dis- 
tinct raised border; spores filiform, slightly undulate-curved (nu- 
cleate ?) 20-22// by about i//, or rather less. 
On leaves of Phryma Leptostachya, Ohio. June, 1 883. No. 344. 
Septoria Cephalanthl— On round, red-brown spots (1.5-3"""*) 
with a narrow, slightly raised border. Perithecia minute (130-120//) 
mostly collected in a cluster in the centre of the spots; spores abun- 
dant, fusiform, brownish, continuous, nearly straight, 12-20x1//. 
This can hardly be S. verrucmformis, B. & C, which is on branches 
of Cephalanthus, 
On leaves of C. occtdentalis. Aug. No. 602. 
Septoria Stenosiphonis.-— Spots red-brown 1-2'"™', or, by con- 
fluence, 2-4"*™' across, either remaining brown or whitening out in 
the centre, the whitened part being surrounded by an indistinct nar- 
row border, which is included in the limits of the brown spot; peri- 
thecia visible on both sides of the leaf, mostly collected in the centre 
of the spots, brownish black, subglobose (90/O; spores filiform, yel- 
lowish or nearly hyaline, but slightly curved, 18-30x1/^. 
On Stcnosiphon virgatus. July. No. 578. 
Closely allied to S, (Enothem, West., but spots smaller, spores 
shorter and narrower and perithecia less numerous. 
IsARiA XYLARioiDES.— Stems fasciculatc, about i^"Mngh and i 
thick, brown, dusted with yellow powder below and bearing above a 
white, oblong head, composed of loosely branching hyphae bearing 
abuadant globose or ovate hyaline conidia, 2-2.5"*"- i« dl^^meter. The 
whole somewhat resembles an imperfectly developed Xylaria, which 
perhaps it is. ,..,,. t^ 
On dead wood. June. No. 554- Sent also from Bethlehem, Pa., 
August, 1884, by Mr. E. A. Rau. ^ . . _ 
Cercospora Isanthi.— On round U"™") ^hite spots, with anar- 
mni. 
