214 



Cincinnati Society of Natural History. 



Uredo rubigo-vera, DC. — On rye. Cincinnati, May 3, 1840.* 



Cronartium asclepiadeum, Kze., var. Thesii, Berk. — Cincinnati. 



Maculis obliterans; tuberculis parvis sparsis; sporis subglobosis; 

 peridiis elongatis, incurvatis, extus minutissime ramentaceis. — Berk, 

 in Hook. Lond. Journ., vol. iv., p. 311. 



On Thesium nmbellatum, generall}' scattered, not aggregate, as in the 

 original species, where they seem to be usually confined to a deter- 

 minate spot. Peridia more minute; cells of the peridium longer; spores 

 not so much elongated. 



Macrosporium pinguedinis, Berk. — On grass soiled with fat. Cin- 

 cinnati, June 19, 1841. 



Latissime effusum, floccis tenuibus, erectis, simplicibus, septatis; 

 sporis lanceolatis, quandoque obovato-oblongis. — Berk, in Hook. 

 Lond. Journ., vol. iv., p. 309, tab. 12, fig. 2. 



Completely investing the culms and leaves on which it grows. Flocci 

 erect, flexuous, septate; spores brown, lanceolate, obtuse, transversely 

 septate, with occasionally a vertical septum; sometimes obovate-ob- 

 long. 



Macrosporium punctiforme, Berk. — On dead stems of Rubus occi- 

 dentals. Cincinnati. 



Soris minutis, sparsis, punctiformibus; sporis obovatis; filis sim- 

 plicibus, obtusis, subflexuosis. — Berk, in Hook. Lond. Journ., vol. iv., 

 p. 309, table 12, fig. 1. 



Forming minute, black, scattered dots; stroma reticulate; flocci 

 erect, simple, slightly flexuous. sparingly septate, sometimes decum- 

 bent and then proliferous; spores obovate, at first simple and pellucid, 

 then furnished with one or two transverse septa, at length acquiring a 

 darker tinge, and a few oblique or vertical septa. 



Oidium simile, Berk. — On decayed wood. Cincinnati, Jan. 18, 1842. 



Effusum, submembranaceum, fulvum; filis ramosiusculis; articulis 

 ultimis subglobosis. — Berk, in Hook. Lond. Journ., vol. iv., p. 310, 

 tab. 12, fig. 4. 



Forming a deep, tawny, pulverulent, but somewhat membranaceous 

 stratum, which to the outward eye exactly resembles Oidium fulvum, 

 but distinguished by its subglobose, not oblong articulations. The 

 fructifying bodies arise, either from a direct transformation of the ul- 

 timate joints, or from the central constriction of the subterminal. 



* An imperfect state of Puccinia graminis. 



