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Cytispora. 



carbonacea, Fr. On dead Elm twigs. Cincinnati, 

 Nov. 6, 1841. 

 Septoneivia.. 



spilomeum, Berk. On fence rails. Cincinnati, March 

 3, 1842. Waynesville, Aug. 27, 1844.'' 

 Sporidesmium. 



atrum, Lk. On Biittonwood, with Sphaeria convergens. 



Cincinnati, March 19, 1842. 

 celliilosum, Fr. On Elm twigs. Cincinnati, Nov. 6, 



1841. 

 concinnum. Berk. On a rotten trunk. Cincinnati, 

 March 31, 1841.^ 



PuCCINIA. 



graminis, Dec. Cincinnati. Waynesville. 



aculeata, Schwein. On the under side of the leaves of 



Podophyllum peltatum.^ 

 circce, Pers. Cincinnati. 

 Ukedo. 



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



from the confluence of several individuals; more frequently solitary; occa- 

 sionally the contents of the spores are attracted' to either end, but I do not find 

 a septum even in decaying specimens. 



' Septonema spilomeum: soris parvis, punctiformibus, atro-purpureis; 

 fills ramosis; articulis oblongo ellipticis, scabriusculis, triseptatis. Berk, in 



Hook. Land. Journ., vol. iv. p. 310, tab. 12, fig. 5. Forming little, scattered, 



purplish-black sori, about the size of a poppy-seed ; threads branched ; articu- 

 lations oblongo-elliptic, triseptate, one or more of the septa containing, occa- 

 sionally, an oil-globule ; border of articulations pellucid, rough with little sca- 

 brous prominences. Very distinct from the other species in its punctiforrn 



habit and the nature of the articulations. These are not represented suffi- 

 ciently irregular in the figure. It is very difijcult to get a clear view, as they 

 are so opaque. 



° Spohidesmium concinnum : sporis primura brevissime pedicellatis, oblon- 

 gis, obtusis, nitidis, fenestratis. Bei'k. in Hook. Lond. Journ. Eat., vol. iv. p. 309, 



tab. 12, fig. 3. Forming minute, jet-black, crowded sori, which are at 



length almost confluent; stroma consisting of decumbent, branched threads; 

 spores at first simple, obovate, pellucid, then oblong (the peduncle being en- 

 tirely obliterated) and divided by numerous transverse and vertical, or more 

 rarely oblique septa. 



3 Corda Fasc 6, ined. cum optima icone. 



■* An imperfect state of Puccinia graminis. 



