﻿Arthur and Fromme: A new Endophyllum 59 



III. Telia aecidioid, hypophyllous and caulicolous, diffused, 

 from a perennial mycelium, following the veins or covering large 

 areas, round or elliptical, bullate, large, 0.5-1 mm. broad by 

 0.5-1.5 mm. long, yellowish or orange when fresh; peridium color- 

 less, opening at first by a small apical pore, soon disappearing; 

 peridial cells oblong, slightly larger than the teliospores, the outer 

 wall smooth, transversely striate, 5-7 m thick, the inner coarsely 

 verrucose, thinner, 1-3 fi; teliospores angularly globoid or oblong, 

 occasionally with a transverse, median septum, 16-26 by 18-30 n; 

 wall pale yellow, moderately thin, 1-2 m, closely and rather promi- 

 nently verrucose. 



On Althaea rosea L.: Nebraska (Red Cloud, October 6, 1910, 

 Bates). 



On Callirhoe involucrata (T, & G.) A. Gray: Kansas (Rockport, 

 now called Stockton, May 20, 1889 in Kellerm. & Swingle, Kan. 

 Fungi 30, May 22, 1894, Stockton, May 25, 191 1 in Barth. N. 

 Am. Ured. J02, Rooks County, September 15, 1887, May 25, 1897 

 in Sydow, Ured. 1199, June 2, 1902, Manhattan, May 1893 in 

 Carleton, Ured. Am. 31, all by Bartholomew; Osborne County, 

 June 1 891, Brown; Osborne, May 1894 in Rab.-Wint.-Paz. Fungi 

 Eur. 4239, Shear; Decatur County, June 1892, Hitchcock; Wichita, 

 June 7, 1893, Carleton); Nebraska (Red Cloud, May 2, 1903, May 

 9, 1903, May 14, 191 1 in Barth. N. Am. Ured. 601, Bates). 



On Sidalcea Candida A. Gray: Colorado (Eldorado Springs, 

 August 19, 1909, Eldora, September, 1910, Lake Eldora, August 7, 

 1910, September 17, 1910, August 25, 191 1, Tolland, October 29, 

 1910, September 20, 1914, all hy Bethel; Routt County, July 16, 

 1894, Crandall). 



On Sidalcea neo-mexicana A. Gray (S. malvaefiora Coulter in 

 Bot. Rocky Mt. Region, not A. Gray) : Colorado (Sulphur Springs, 

 November 1910, August 14, 1910, Bethel); Wyoming (Seminole 

 Mts., Carbon County, July 23, 1898, E. & A. Nelson). 



Type collected in Rooks County, Kansas, on leaves of Callirhoe 

 involucrata, E. Bartholomew 2^ (September 15, 1887). 



Distribution: from eastern Kansas and southern Nebraska 

 to north central Colorado and southern Wyoming. 



The germination stages of the teliospores of End. tuberculatum 

 are similar to those described by Kunkel for Gym. inter stitialis 

 and by Hoffman for End. Sempervivi. The promycelium is formed 

 at one end of the ellipsoid spore and usually attains its full length, 



