264 BROOKLYN BOTANIC GARDEN MEMOIRS 
In America the most important work has been conducted by 
Carleton (Div. Veg. Phys. & Path. U.S. D. A. Bull. 16. -1899; Bug: 
Pl; Industry, U. S. D2 A. Bull.63. 1904); Arthur Jour, Mycex sage 
LQOD SV PU 5 7.9 1905; 122L7-. “19005 1325108... 19075414 = TOs 
Mycol. 2: 227. 1910; 4:18. 1912); Freeman & Johnson (Bur. PI. 
Ind. U.S. D. Ay Bull. 216; 1011); Stakman (Minn, Exp:Staseulk 
138. 1914; Jour. Agr. Research 4: 193-199. 1915) and Stakman 
and Piemeisel (Jour. Agr. Research 6: 813-816. 1916; 10: 429-495. 
I9I7). 
In Oregon the rust is apparently not as important on wheat and 
other grains as it is in the spring wheat districts east of the Rocky 
mountains. No aecial collections have been made. 
A number of unrecorded hosts appear in the above list. Since 
the publication of Uredo quinqueporula by Arthur and Fromme (I. c.), 
telia have been found on a duplicate specimen which determines that 
that species is properly referred here. The number of pores in the 
uredospores of that collection is unusual for this rust, the usual number 
being 4, and in the absence of telia was considered of sufficient impor- 
tance to separate it as a distinct species. 
152. PUCCINIA POLYGONI-ALPINI Cruchet & Mayor, Bull. Herb. Bois 
8: 245. 1908. 
ON POLYGONACEAE: 
Rumex paucifolius Nutt.—Crater Lake, Klamath Co., Sept. 9, 
1OTo, J Re Weir 253: 
This specimen is referred to the above species on account of the 
hyaline umbo covering the pore of the apical cell in the teliospore. 
The species is described from material on Polygonum alpinum from 
Europe with which our material closely agrees. A collection on that 
host from Idaho is also to be referred here. The rust is unlike any 
other recorded on Rumex. The only other collection recorded on this 
host from North America is the one on which P. uniformis Pammel & 
Hume from Wyoming was based, which Holway (N. Am. Ured. 1: 36. 
1906) considers to be on Polygonum sp. and refers to P. Bistortae. 
153. PUCCINIA POLYGONI-AMPHIBII Pers. Syn. Fung. 227. 1801. 
Aecidium Geranit maculati Schw. Schr. Nat. Ges. Leipzig 1: 67. 
1822. 
ON POLYGONACEAE: ‘ 
Polygonum amphibium L.—Brandt’s Ranch, Wallowa Valley, Aug. 
26, 1897, E. P. Sheldon, 8972; The Dalles, Wasco Co., Aug. 25, 1915, 
E. Bartholomew (Barth. N. Am. Ured. 1566). 
Polygonum Muhlenbergii S. Wats. (P. emersum Britt.)—The Dalles, 
Wasco Co., Aug. 26, 1915, E. Bartholomew (Barth. Fungi Columb. 
