AMERICAN UREDINE^E. 181 



in Kansas, Iowa, Indiana, Mississippi and New Jersey. It 

 is far less abundant than the true Pncci)iia andropogonis 

 Schw. 



A rust which closely resembles P. ellisiana is the 

 European Puccinia ccsatii Schroeter {P. andropogonis 

 Fckl.). This species was collected on Andropogon 

 furcatiis by A. B. Seymour on Aug. 22, 1884, atBrainerd, 

 Minn., on his journey to Washington Territory, and also 

 on A. hallii, by H. J. Webber, in Sept., 1889, in Howard 

 Co., Nebraska. Both the teleutospores and uredospores 

 resemble those of P. ellisiana, but the uredospores are 

 much larger, having nearly twice the diameter, and the 

 germ-pores, instead of being four and equatorial, are more 

 than four and scattered. Both of the above collections 

 have passed until now for P. andropogi. 



The secidia of both P. cl/isiana and P. ccsatii yet remain 

 undetected. 



39. Puccinia andropogonis Schw. (1834. Trans. Amer. 

 Phil. Soc. 4:295). 



39a. On Pentstemon hirsufus (L.) Willd. o, I. Lafayette, Ind., Stuart. 



39b. On Pentstemon albidus Nutt. I. Rooks Co., Kans., Bartholomew. 



2>9c. On Pentstemon grandiflorus Nutt. o, I. Long Pine, Neb., Bates. 



7>9d. On Andropogon scoparius Michx. II, iii. Spirit Lake, la., Arthur. 



39e. On Andropogon scoparius III. Lafayette, Ind., Stuart. 



2>9f. On Andropogon scoparius ii, III. Lafayette, Ind., Miss Snyder. 



?>9g. On Andropogon furcatus Muhl. II, iii. Spirit Lake, la.., Arthur. 



39//. On Andropogon furcatus ii, III. Lafayette, Ind., Miss Snyder. 



39z. On Andropogon furcatus III. Decorah, la., Holway. 



39/. On Andropogon furcatus ii, III. Rockport, Kans., Bartholomew. 



Z9k. On Andropogon hallii Hack, ii, III. Cody, Neb., Bates. 



Orig. DKSC. "449. 20. Pentastemonis Sz. A. orbiculare minus eras- 

 sum purpureum subtus luteum, peridiis candidis congestis. 



Non infrequens in foliis et caulibus Pentastemonis hirsuti. 

 Distincta species. Lineas duas latum. Peridia pro ratione plantar 

 magna. Sporidia luteo-fusca, simplicia, vesiculosa." 

 Second Desc. "*2911. 7. P. andropogi, L. v. S., frequentissima 

 autumno in foliis culmisque etiam vaginis variarum specierum 

 Andropogi, Bethl. 

 P. maculis obliteratis, acervis dense aggregatis, elevatis, fuscis, 



