234 



Mycologia 



E. Bartholomew ; Nebraska, 1899, A. J. Bell; Gordon, Wis., 

 July 12, 1907, /. /. Davis. 



II. Uredinia hypophyllous, oblong-linear, pulvinate, early naked, 

 chestnut-brown, only slightly pulverulent; urediniospores globose 

 or nearly so, 23-33^ in diameter, wall cinnamon-brown, uniformly 

 thick, 3-6/x, finely and closely verrucose, pores five or more, 

 scattered. 



III. Telia hypophyllous, oblong or linear, early naked, pulvi- 

 nate, firm, chocolate-brown ; teliospores broadly ellipsoid or obo- 

 vate, 22-30 by 30-40/x, somewhat constricted at the septum, 

 rounded at both ends, or narrowed below, wall smooth, medium 

 thick, 3/x, much thickened at apex, 6-iO/x, chestnut-brown ; pedicel 

 colored, once to twice length of spore. 



On Andropogon Hallii Hack., Manhattan, Kans., no date, 

 M. A. Carleton; Howard Co., Neb., September, 1889, H. J. 

 Wehher; Kennedy, Neb., Sept. 7, 1908, /. M. Bates (Barth., 

 Fungi Columb. ^75(5) ; Red Cloud, Neb., May 7, 1909, /. M. 

 Bates. 



2. Gymnosporangium exiguum Kern, on Juniperus virgin- 

 iana L., collected at Austin, Texas, by Dr. F. D. Heald and Mr. 



F. A. Wolf, was sown April 26 on Amelanchter canadensis 

 with no infection, and at the same time on Crataegus P'vinglei, 

 giving abundant pycnia May 6, and aecia June 26. 



This southernmost species of cedar rust was described a year 

 ago*^ from telial material that was collected in the vicinity of 

 that used for the cultures. The telial description may now be 

 supplemented by a description of the pycnia and aecia. Only 

 one collection of aecia from the field is yet known that can be 

 assigned to this species. It was obtained at Boerne, Texas, not 

 far from San Antonio, and is to some extent on the leaves, but 

 mostly on the fruit of some undetermined species of Crataegus. 

 While trees of red cedar of more than one species are abundant 

 in southern Texas where the rust is found, trees of Crataegus are 

 rare, and the rust is probably not common. 



0. Pycnia fruiticolous and epiphyllous, gregarious, in irregular 

 groups 1-4 mm. across, on discolored hypertrophied areas, prom- 

 inent, conspicuous, honey-yellow soon becoming blackish, globoid 

 or depressed globoid, i5C)-i65/x in diameter by 100-130,0, high; 

 ostiolar filaments ^o-6^fx long. 



1. Aecia fruiticolous and hypophyllous, sparsely arranged in 

 irregular groups, causing considerable hypertrophy of the veins, 



"Bull. Torrey Club 35: 508. 1908. 



