407 



Ilieracium alhiflorum Ilook., British Columbia. 



Hieracium cynoglossoides Arvet., Montana. 



Hieracium panicidaUim L., Pennsylvania. 

 TYPE LOCALITY : Bethlehem, Pennsylvania, on Uicraciiiin paniculatum. 

 DISTRIBUTION: Pennsylvania west to Montana and British Columbia. 



This Aecidiimi is very similar to the one on Lactuca which belongs to 

 what has been referred to the so-called Piiccinia OpizH Bubak on Carex. 

 Further, in 1907, Prof. E. W. D. Holway collected the Aecidium at Glacief, 

 B. C, and made the observation that it was possibly connected with a 

 I'liccinia on Carex Deweyana Schw. and C. vitilis Fries which PuccuUa is 

 practically indeutical with the so-called Puccinia Opizii Bubak. This to- 

 gether with the fact that this Hieracium Aecidium and Puccinia Opizii have 

 practically the same general geographical distribution, makes it very likely 

 that this Aecidium belongs with the above named Carex rust, but cultures 

 are necessary to prove this definitely. 



i)0. Aecidium columhiense Ellis & Ev. Erythea 1 :20G. 1893. 

 On CICHORIACEAE : 



Hieracium alhiflorum Hook., Washington; British Columbia. 



Hieracium Scoulerl Hook., British Columbia. 

 TYPE LOCALITY: British Columbia, on Hieracium [Scouleri]. 

 DISTRIBUTION: Washington and British Columbia. 



Distinct from Aecidium Hicraciatum Schw. in having a diffused myce- 

 lium. 



Prof. Holway l)elieves this to be connected with Puccinia on Luziila. 



91. Aecidium sp. 

 On AMBROSIACEAE : 



Iva waria Bartlett (/. frutcscens A. Gray, not L.), Delaware, Flor- 

 ida, Louisiana, Virginia. 

 DISTRIBUTION: Salt marshes along the ocean and gulf coasts from 

 Delaware to Louisiana. Evidently a heteroecious form. 



92. Aecidium Liatridis (Webber) Ellis & Anders. Bot. Gaz. 16:47. 

 1891. 



Aecidium compositarum Liatri Webber, Bull. Neb. Agr. Exp. Sta. 1 :n. 



9:60. 1889. Nomen nudem. 

 Aecidium compositarum Liatridis Webber, Rep. Neb. Bd. Agr. 1889:210 



(70). 1890. 



