New species of Uredineae—X * 
JOSEPH CHARLES ARTHUR 
The preceding number in this series was issued in November, 
1915. Since that time some collections of Uredinales have come 
to hand, or have been awaiting study, which appear to be unde- 
scribed. The discovery of additional spore forms for previously 
named species admits of their transfer to more suitable genera, 
thus necessitating new combinations. Both new names and new 
combinations are required in order to make the material more 
available in future studies. All the species are North American. 
Although the localities range from Wyoming and Vermont to 
Panama and the West Indies, yet the majority are in Mexico 
and Central America, where the rust flora is abundant, but much 
less known than northward. 
Uromyces Atriplicis (Shear) comb. nov. 
Aecidium Atriplicis Shear, Bull. Torrey Club 29: 453. 1902. 
The aecia of this rust have been known for a number of years. 
They are abundant in Colorado on Atriplex confertifolia (Torr.) 
S. Wats., and were distributed in Griffiths, West Amer. Fungi 
321 (type), Ellis & Ev., Fungi Columb. 1294, and Barth., North 
Amer. Ured. gor. On August 29, 1911, telia were gathered by 
Mr. E. Bethel at Delta, Colorado, from the same plants that had 
yielded a large crop of aecia earlier in the season. This collection 
shows the same plentiful sprinkling of telia over the under side of 
the leaves as marks the presence of the aecia, a few sori in both 
cases usually appearing on the upper side of the leaves. The col- 
lection from Delta also includes aecia, both on the same leaves 
* Reprints may be obtained by application to the Botanical Department, Purdue 
University Agricultural Experiment Station, Lafayette, Ind., under whose auspices 
the work was carried on. 
New Species of Uredineae I-IX: Bull. Torrey Club (I) 28: 661-666. Igor. 
(II) 29: 227-231. 1902; (III) 32: 1-8. 1904; (IV) 33: 27-32. 1906; (V) 33: 513- 
522. 1906; (VI) 34: 583-592. 1907; (VII) 37: 569-580. 1910 (VIII) 38: 369-378; 
ro11; (IX) 42: 585-593- 1915 
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