North American Species of Puccinia on Carex 229 



II. Urediniospores ellipsoid or obovoid 15-20 X 20-26^; wall 

 golden-brown, about 1.5 p thick, moderately echinulate, the pores 

 2, in the upper part of the spore. 



III. Teliospores narrowly clavate-oblong, 15-21 X 32-59 /x, 

 rounded or truncate above, slightly or not constricted at the sep- 

 tum; wall chestnut-brown, somewhat paler below, i-I-5/a thick, 

 much thicker at apex 5—13 /x; pedicel tinted next to the spore, 

 about three-fourths length of the spore. 



On Carex aenia, brunnesccns, Hoodii, illota, praegracilis, prati- 

 cola, Reynoldsii, Sartwellii, siccata, Sprengelii. 



Distribution : Michigan and Illinois westward to Utah, Ore- 

 gon, and British Columbia. 



Exsiccati: Barth. N. Am. Ured. 738, 1063, 1066, 1165, 1264 

 —702; Barth. Fungi Columb. 3070, 3765, 4366—3101, 3953, 3954, 

 4860; Brenckle, Fungi Dakot. 111, 242 — ma, nib; Clements, 

 Crypt. Form. Colorad. 314 ; Ellis & Ev. Fungi Columb. 1902 — 

 1601 ; Ellis & Ev. N. Am. Fungi. 2993, 3054; Griff, W. Am. Fungi 

 277C, 339a— -372a ; Sydow, Ured. 2323. 



It is here assumed that all the American forms having aecia on 

 members of the Cichoriaceae are referable to a single species. 

 In 1906 cultures were made from an undetermined Carex on 

 various species of Lactuca. At that time it was believed that the 

 species was the same as one in Europe known to have aecia on 

 Lactuca and the name proposed by Bubak, Puc. Opizii, was used. 

 Two years later successful cultures were made with Colorado 

 material on Agoseris and without suspecting its possible rela- 

 tionship to the so-called Puc. Opizii the name Puc. patruelis was 

 proposed. When a more comprehensive study was made it be- 

 came apparent that the American and European species are not 

 identical but that all American forms with aecia on the closely 

 related genera of the Cichoriaceae are without doubt the same 

 species. Puc. patruelis then becomes the name, the Schweinitzian 

 names above listed being doubtfully included. 



17. Puccinia Sambuci (Schw.) Arth. Bot. Gaz. 35:15. 1903 



Aecidium Sambuci Schw. Schr. Nat. Ges. Leipzig 1:67. 1822. 

 Caeoma (Aecidium) sambuciatum Schw. Trans. Am. Phil. Soc. 

 II. 4:294. 1832. 



