Feb., 1902 .] 
Ohio Fungi. Fascicle II. 
207 
20. Gymnoconia interstitialis (Schl.) Lagh. 
Caeoma interstitialis Schlecht. ; Aecidium nitens Schw. 
Spermagonia only. 
On Rubus nigrobaccus Bailey. 
Columbus, Ohio. May 5, 1901. 
Coll. W. A. Kellerman. 
Supplement to No. 19. 
21. Gymnosporangium clavipes Cke. & Pk. 
Roestelia aurantiaca Peck. 
On Crataegus crus-galli L. 
Vinton, Gallia Co., Ohio. July 10, 1901. 
Coll. \V. A. Kellerman. 
“ Roestelia aurantiaca Peck. — Peridia deeply seated, cylin- 
drical, fragile, soon lacerated, fugacious, white ; spores subglobose, 
bright orange, about .00U in diameter, with a thick hyaline 
epispore.” Chas. H. Peck, Report of the New' York State Museum 
(Report of the Botanist), 25 : 91. 1872. 
22. Gymnosporangium macropus Link. 
Aecidium pyratum Schw. 
O11 Mains coronaria (L.) Mill. 
Lakeside, Ottawa Co., Ohio. Sept. 10, 1901. 
Coll. W. A. Kellerman. 
“ Caeoma, Aecidium, Pyratum, L. v. S. — C. maculis in pagina 
superiori orbiculatis, rubris in ambitu ocliraceis, ceutro nigrescenti- 
bus. In aversa pagina apparent pseudoperidia creberrima, subcon- 
centrica, parum tantum elevata margine eleganter multifido- 
fimbriato ; fimbriis rectis, nullimodo revolutis, divergentibus, 
pallidis. Sporidiis fuscis.” L. D. de Schweinitz, Transactions of 
the American Philosophical Society, Philadelphia, New' Series, 
4 : 294. 1834. 
23. Melampsora populina (Jacq.) Lev. 
Lycoperdon populinum Jacquin ; Uredo longi-capsula 
DC.; Melampsora tremulae Tub 
I. Uredo only. 
O11 Populus deltoides Marsh. 
Columbus, Ohio. October 5, 1902. 
Coll. W. A. Kellerman. 
Jacquin gives, Collectanea Supplement., PI. 9, Fig. 2, only the 
following: “Folium Populi balsamiferae in parte supina, quae 
obsidetur in numeris Lycoperdis minutissimis et parasiticis, folia 
pessumdantibus and Fig. 3, “ Pars hujus folii ad lentem aucta.” 
“Uredo longi-capsula. Cette espece nait sous l’epiderme, le 
perce et forme des taches distinctes, arrondies 011 oblongues, bordees 
dans leur jeunesse par les debris de l’epiderme ; la poussiere est 
tres-abundante, jaune comtne dans l’uredo rouille, mais elle en 
differe parce que ses capsules, au lieu d’etre ovoides, sont tres- 
elongdes et cylindriques ; leurs deux extremites sont obtuses.’’ 
DeCandolle, Flore Fran^aise, 2 : 233. 1815. 
