Sept. 1, 1924 
211 
'Stripe Rust 
Chul wheat. Later in the same month 
it was found in abundance at Moro, 
Oreg., a district of relatively scant 
rainfall, and at other points in Wash¬ 
ington and Idaho. These observations 
are referred to later. 
DISTRIBUTION 
Stripe rust is widely distributed 
throughout Europe, though its ravages 
are confined chiefly to the northern 
countries, that is, Great Britain, 
Sweden, Norway, Denmark, Belgium, 
France, Russia, and Austria. It is 
prevalent also in Egypt, Algeria, 
Japan, and India, but has not yet 
been reported from South America or 
from New Zealand or Australia. 
Although authenticated reports of its 
occurrence in eastern Siberia are not 
at hand, its presence in western 
Siberia (Akmolinsk) and in Japan 
supports the belief that this rust may 
have become established on the main¬ 
land adjacent to Japan. 
In North America, stripe rust thus 
far has been observed eastward to the 
Black Hills of South Dakota, north¬ 
ward as far as Duncan, British Co¬ 
lumbia, and southward as far as Mexico 
City, Mex. Its distribution on this 
continent has not extended eastward 
beyond 103° W. longitude, notwith¬ 
standing the fact that in addition to 
the cultivated hosts, wheat, barley, and 
rye, it occurs naturally on at least 34 
wild grasses, 13 of which extend over 
a wide range of territory east of the 
one hundred and third meridian. 
Hordeum jubatum , one of its most con¬ 
genial hosts, now extends across the 
continent, yet the writers find it is not 
infected with Puccinia glumarum east 
of what may be designated the Rocky 
Mountain formation. Other wild-grass 
hosts, the distribution of which ex¬ 
tends eastward beyond the Pacific and 
intermountain States, are Agropyron 
spicatum , A. cristatum (L.) Gaertn., A . 
dasystachum (Hook.) Scribn., A. de- 
sertorum (Link) Schult., A. interme¬ 
dium (Host.) Beauv., A. violaceum , 
Bromus rubens L., Elymus canadensis 
L., E. glaucus, E. striatus Willd., E. 
virginicus L., Hordeum nodosum , H. 
pusillum Nutt., Hystrix patula Moench 
and Sitanion hystrix. 
Just what factor or combination of 
factors has operated to prevent the 
march of stripe rust, if not simultane¬ 
ously with, at least in the wake of, such 
hosts as have established themselves 
within the Mississippi Valley and be¬ 
yond, has not yet been determined. 
It may be that it is slowly advancing 
eastward and that it is merely a matter 
of time before a visitation of this pest 
will befall the wheat fields of the Great 
Plains and the fertile prairies of Iowa, 
Minnesota, and Illinois. And yet, the 
writers’ records show that P. glumarum 
certainly has been present in Wyoming 
since 1911. During the decade that 
has elapsed, there have been propitious 
rust years, but these have not extended 
the disease beyond the Black Hills in 
western South Dakota where, in 
August, 1919, it was observed by one 
of the authors (Johnson) on cultivated 
barley. In spite of repeated attempts 
to find it in this locality in subsequent 
seasons, it has not been observed on 
either cultivated or wild hosts. 
The fact that the map (fig. 1) shows 
no recorded observation of this rust 
in either Nevada or New Mexico is 
not to be interpreted as evidence of 
the absence of Puccinia glumarum from 
those States. It is not unlikely that 
a more thorough and extensive survey, 
such, for example, as has been con¬ 
ducted in Oregon and Washington, 
would have resulted in its discovery 
in both Nevada and New Mexico. 
EXSICCATI 
Fungi Bohemici. 155, Triticum 
repes , Bohemia, May, 1898. 
Eriksson, Fungi Parasitici Scandi- 
navici. 425 (II, Hordeum vulgare, 
Sweden, July, 1894); 426 . { Hordeum 
jubatum , Sweden, Aug., 1892); 427 
( Hordeum maritimum, Sweden, Sept., 
1894); 428a and 428b (II, III, Triti¬ 
cum vulgare , Sweden, June, 1890); 
429 (II and III, Triticum vulgare, 
Sweden, Oct., 1894); 430 (II, Elymus 
arenarius , Sweden, Aug., 1894). 
Sydow Uredineen. 1070 (II, Secale 
cereale, Germany, Feb., 1896); 1591 
(Hordeum hexastichum, Germany, June, 
1901); 2519 (II and III, Triticum 
caninum , Germanv, Julv, 1912); 2467 
(II, Triticum repentis L., Denmark, 
June, 1912); 682 ( Triticum repens, 
Germany, July, 1892); 883 (II, Hor¬ 
deum vulgare , Germany, 1894. Issued 
as Puccinia rubigo-vera ). 
■ Krieger, Fungi Saxonici . 1406 (II, 
Triticum vulgare bei Koenigstein, 
7-1895); 1407 (II and III, Triticum 
vulgare , Germany); . 1408 (II, Secale 
cereale , Germany, 7-1895); 1452 (II, 
Triticum caninum , Schweiz, Juni, 1899); 
2303 (III, Triticum caninum, Koenig¬ 
stein im Bielatale, 8-1914). 
Krieger, Schaedliche Pilze unserer 
Kulturgewaechse. 62 (II and III, 
Triticum vulgare, Germany, July, 1895); 
63 (II, Triticum vulgare, Germany, 
July, 1895). 
Petrak, Flora Bohemiae et Moraviae 
exsiccata. 376./a (II, Secale cereale , 
