Pnjlimmarij List of Wisconsin Parasitic Fungi. 129 



183. PucciNiA PETALOSTEMONis Farlow, in litt. 



IJredo and teleutospores on Petalostemon. La Crosse, Pammel. 



II. Sori round, brown, surrounded by the ruptured epidermis, which is 

 elevated so as to form a false-peridium. Spores pale brown, ovoid, nearly 

 smooth or somewhat granular on the surface. Average size, 20X33 /'• 



III. Sori similar to those containing uredo spores, Vlack. Spores me- 

 dium brown, broadly ellipsoidal, sl'ghtly constricted, thin-walled, without 

 apical thickening, surrounded by a smooth gelatinous sheath; average 

 20X33 /I. 



The species is related to P. amorjihae Curt., hut readily distinguished 

 by the paler and more transparent teleutospores, and the thinner, smooth 

 envelope. Pale-amber parapliyses, frequently hooked at the tip, accom- 

 pany both uredo and teleutospores. 



183. PUCCINIA ZYGADENI, n. sp. 



Teleutospores on Zygadenus glaueus Nutt. La Crosse, Pammel. 



Sori small, rounded; on both sides of the leaf. Spores amber-brown, 

 darker at the apex, on thin walled coloi'less pedicels; oblong or sometimes 

 clavate; but slightly constricted. Apex thickened, usually rounded or 

 truncate, rai'ely acute. 16-30x33-56 /.i; commonly about 17x43 /;. 



This resembles a specimen in the Curtis herbarium, on AmianiMum, 

 which is labeled P, aspliodeli Duby. " It corresponds closely to a specimen 

 from France, bearing the same name, but evidently incorrectly named, as 

 other specimens from France and Italy, with the same name, are quite dif- 

 ferent." (Farlow, in litt). 



184 PcrCCINIA ALETRIDIS B. & C. 



Uredo and teleutospores on Aletris farinosa L. Kilbourn City, 

 Pammel. 

 The uredo sori are small; their spores pale yellow, round-ellipoidal, thin 

 walled and sparsely granulated. Their usual size is about 20 /.i. 



185. PUCCINIA KUHNIAE Schw. 



Teleutospores on Kuhnia ciqKitorioides L., in the fall. Madison; 

 La Crosse, Pammel. 



186. PUCCINIA PODOPHYLLi Schw. (P. aculeuta Schw.). 



Teleutospores common on Podopliyllum x)eltatum L., in June. Madi- 

 son, Kilbourn City; La Crosse, Pammtl. 

 Sometimes accompanying or j)receded by Aecidium podophijlJi Schw., 

 but frequently found where there is no trace of the latter. 



187. PUCCINIA XANTHII Schw. 



Teleutospores on Xanthium strumarium L. and Ambi^osia trifida L. 

 Madison; La Crosse, Pammel. Also collected ot Hokah, Minn., by 

 Mr. Pammel. 



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