32 2 NATURAL HISTORY BULLETIN. 



tical, 26-39 by 30-45", contents orange when fresh, becoming faintly 

 yellow when old, at first globose, afterward angular and shrunken, wall 

 colorless, thickened above, sometimes to more than half the diameter of 

 the spore, prominently tuberculate, pores obscure. III. Teleutosori 

 pulvinate, chocolate brown; teleutospores elliptical or oblong, 20-26 by 

 37-52//, slightly constricted at the septum, apex obtuse, thickened; 

 pedicel firm, slender, tinted, once to thrice the length of the spore." 



EXSIC. 



Ellis and Everhart, N. Am. Fungi, 1474. 

 Seymour and Earle, Econ. Fungi, 69. 

 Rabenhorst-Winter-Pazschke, Fungi Europaei, 4026. 



This species is not so common as the following one, and 

 does not have so wide a distribution. It is at present known 

 from Massachusetts, Wisconsin, Illinois, Iowa, North Dakota 

 and Ontario. Until recently (see Bot. Gaz. 34:12) it has 

 been confounded with the following species, from which it can 

 be readily distinguished by the position of the teleutosori on 

 the upper (rough) side of the leaf, and by the unique uredo- 

 spores. Number 53^ of the accompanying distribution is part 

 of the type collection. 



There is reason to believe, especially from the similarity of 

 spore structure, that the aecidial stage of this species inhabits 

 Cefihalanthus (sEcidium cephalanthi Seym.), but no cultures 

 have yet been successfully carried out. 



In Ellis and Everhart's exsiccati No. 1474 the host is er- 

 roneously stated to be Phragmites communis; it has not yet 

 been observed upon any other host than Sflartina cynosur- 

 o/dcs. 



54. PUCCINIA FRAXINATA (/,£.) Artk. (19O2. Bot. Gaz. 



34:6.) 



54a. On Fraxinus lanceolata Borck. (F. viridis Michx. f. ) O, I. 

 Rockport, Kas., Bartholomew. 



546. On Fraxinus lanceolata Borck. I. Spirit Lake, Iowa, Arthur. 



54r. On Fraxinus lanceolata Borck., I. South Hero, Vt., Jones. 



54^. On Fraxinus pennsylvanica Marsh., (F. pubescens Lam.) O, I. 

 Long Pine, Neb., Bates. 



54^. On Fraxinus pennsylvanica Marsh., I, South Hero, Vt., Jones. 



54/". On Spartina cynosuroides (L. ) Willd., II, South Hero, Vt., Jones. 



