58 
Journal of Mycology 
[Vol. 8 
pauciseptatis, fusco-olivaceis; conidiis in hypharum apicibus cylindraceo- 
obclavatis, v. anguste fusoideis, rectiusculus, 40-50 x 5, 2-4 septatis, apice 
obtusiusculus, hyalinus.” P. A. Saccardo. Michelia, 1:269. 15 Januar, 
1878. 
65. Cercospora hydropiperis (Thuem.) Speg. 
Helminthosporinm hydropiperis Thuem.; Cercospora polygono- 
rum Cke. 
On Polygonum punctatum Ell. 
Columbus, Ohio. September 22, 1901. 
Coll. W. A. Kellerman. 
“Helminthosporium Plydropiperis Thuem. nov, spec. 
“H. caespitibus hydrophyllis, plerumque foliam totam occupans, 
velutinis, effusis, tenuibis, olivaceis, densis; hyphis erectis, subrectis, 
simplicibus, non vel vix septatis, tenuibus, brevibus, dilute fuscis; sporis 
longeclavatis, subcurvatis, apice dilatatis, vertice angustatis, subacutatis, 
6-10 septatis ad septas non constrictis, cum nucleo hyalino unico in 
cellulis omnibus, dilute fuscis, 50-60 mm. long., 8-10 mm. crass.” F. de 
Thuemen, Mycotheca universalis, no. 1087. 
66. Cintractia junci (Schw.) TreL 
On Juncus tenuis Willd. 
Brush Lake, Champaign Co., Ohio. May 30, 1902. 
Coll. J. H. Schaffner and F. J. Tyler. 
Caeoma (Ustilago) Junci, L. v. S. 
“C. aterrimum, longitudinaliter in glumis effusum, primum tectum 
cortice quasi spurio nigronitido. Sporidiis minutissimis conglutinatis. 
An idem Ustilago in Rhynchosporis rarissime obvia, sporidiis majoribus.” 
L. D. de Schweinitz, Transactions of the American Philosophical Society, 
Philadelphia. 4:290. 1834. 
67. Qymnoconia interstitialis (Schlecht.) Lagh. 
On Rubus occidentalis L. 
Olena, Huron Co., Ohio. June 2, 1902. 
Coll. O. E. Jennings. 
The host occurred with Rubus nigrobaccus but the latter harbored 
none of the fungus. 
Supplement to No. 20 . 
68. PSasmopara halstedii (Farl.) Berl. & De 
Torn. 
Peronospora halstedii Farl. 
On Vitis sp., cultivated. 
Columbus, Ohio. June 6, 1901. 
Coll. W. A. Kellerman. 
“P. halstedii Farlow. Mycelium with oval haustoria. Conidio- 
phores rather stout, undivided below, above with numerous 1 to 4 pinnate 
