North American Species of Puccinia on Carex 223 



species. It is evidently a bog form since both aecial and telial 

 hosts are limited in distribution to swamps, bogs or lake margins. 



12. Puccinia universalis Arth. Jour. Myc. 14: 21, 1908 



Aecidium Dracunculi Thiim. Bull. Soc. Nat. Moscow 58: 212. 

 1878. Not P. Dracunculi Auerswald, 1850. 



O & I. Pycnia and aecia on Artemisia spp. (For cultures see 

 Jour. Myc. 14:21. 1908; Mycologia 2:224. 1910.) 



II. Urediniospores broadly ellipsoid, 1 5-20 X 20-26 ^ ; wall 

 cinnamon-brown, 1-1.5/x thick, rather finely echinulate, the pores 

 2, equatorial or approximately equatorial. 



III. Teliospores clavate-oblong, 16-26 X 35—55 slightly or 

 not constricted at the septum, rounded or obtuse above ; wall dark 

 chestnut-brown above, somewhat paler below, 1.5-2 /x thick, much 

 thicker above 7-12^; pedicel tinted, one half length of spore or 

 more. 



On Carex diandra, Douglasii, filifolia, Geyeri, heliophila, multi- 

 caulis, ohtusata, oligocarpa (Wis.), petasata, praegracilis, Rossii, 

 stenophylla. 



Distribution : Semi-arid regions, North Dakota, and Montana 

 south to Colorado and Utah, locally in Iowa and Wisconsin ; also 

 in Asia. 



Exsiccati : Barth. N. Am. Ured. 273, 475, 1080, 14/6 — 668, 

 872; Barth. Fungi Columb. 2446, 4275, 43/6, 4675, 4980 — 4165, 

 4469, 4765 ; Brenckle, Fungi Dakot. 106 ; Clements, Crypt. Form. 

 Colorad. 505 ; Ellis & Ev. N. Am. Fungi 2219 ; Ellis & Ev. Fungi 

 Columb. 1641 — 1664; GrifT. W. Am. Fungi 277a, 360, 360a; Syd. 

 Ured. 1712— 2435. 



One of the most interesting features about this species is its 

 distribution. The fact that it occurs in the central part of North 

 America and also in central Asia and that in each locality the 

 original telial host is Carex stenophylla is worthy of note. The 

 probable connection between these aecia and telia was suspected 

 independently in the widely separated locations, by Dr. W. 

 Tranzschel in Turkestan and by Rev. J. M. Bates in Nebraska, 

 and numerous cultures have been since made but only the hosts, 

 C. stenophylla and A. dracunculoides have been employed suc- 

 cessfully. All of the other species of Carex are included here 



