Sept. 1, 1924 
Stripe Rust 
213 
Boehmen, 6, 1894); 376./b (II, Cala- 
magrostis epigeios, Moravia, 9-1912). 
Fungi Eichleriani. 104 ( Hordeum 
vulgare, Moravia, May, 1906); 105 
(Triticum aestivum , Moravia, June, 
1906). 
Saccardo, Mycotheca italica. 1445 
(II, HI, Secale cereale, Italy, Mav, 
1904). 
Bucholtz and Bondarzew, Fungi 
Rossiei exsiccati, Ser. A, 163 ( Hordeum 
vulgare , Russia, July, 1917). 
Butler, E. J. ( Hordeum jubatum, 
India, Feb., 1905). 
Herb. Crypt. Ind. Orient. (II, 
Hordeum vulgare, India, April, 1904); 
(II, Hordeum vulgare, India, 1907); 
(II, III, Hordeum vulgare, India, 
March, 1903). 
Westendorp et Wallays, Herbier 
Cryptogamique. 1845-1859. 231 
(‘‘leaves of cereals,” Belgium. Issued 
as Uredo rubigo-vera). 
Plantes cryptogames de France. 1476 
(II, HI, Triticum sp., France, 1845- 
1859. Issued as Uredo glumarum ); 
568 France, 1845-1859. Issued as 
Uredo glumarum). 
Bartholomew, North American Uredi- 
nales. 1063 (III, Hordeum jubatum, 
Wyoming, Aug., 1911. Issued as P. 
montanensis) ; 2758 (III, Agropyron 
smithii, Colorado, Aug., 1916); 2435 
( Elymus glaucus, California, June, 
1919); 1755 ( Hordeum nodosum, Colo¬ 
rado, Aug., 1916). 
Bartholomew, Fungi Columbiani. 
3763 ( Hordeum jubatum, Wyoming, 
Aug., 1911. Issued as P. montanensis ); 
4369 ( Hordeum jubatum, Montana, 
Aug., 1913. Issued as P. rubigo-vera)', 
4611 ( Sitanion elymoides, Wyoming, 
Aug., 1911. Issued as P. agropyri (?)). 
Garrett, Fungi Utahenses. 138 and 
139 (II and III, Elymus glaucus, Utah, 
June, 1907. Issued as P. rubigo-vera)', 
191 (II and III, Hordeum jubatum, 
Utah, July, 1919. Issued as P. rubigo- 
vera) ; 192 (II and III Hordeum pusillum 
Utah, Aug., 1909. Issued as P. rubigo- 
vera) . 
Piper, Washington Flora. 41 (II, 
Elymus Americanus, Wash., June, 1892. 
Issued as P. rubigo-vera); 206 ( Bromus 
Hookerianus, Wash., July, 1892. 
Issued as P. rubigo-vera). 
Strand, Flora of Montana. 180 (II, 
Hordeum jubatum, Montana, Oct., 
1914. Issued as P. agropyri). 
Flora of Oregon. [Oregon Agricul¬ 
tural College.] 1385 (II, Hordeum 
gussoneanum, Oregon, June, 1914. Is¬ 
sued as P. rubigo-vera); 1423 and 1429 
( Sitanion hystrix, Oregon, July, 1914. 
Issued as P. agropyri); 1596 ( Elymus 
glaucus, Oregon, May, 1914. Issued as 
P. agropyri). 
Ex Herb. Bethel. (Hordeum jubatum, 
Colorado, June, 1916. Issued as P. 
agropyri)', (III, Hordeum jubatum, Colo¬ 
rado, ^Julv, 1916. Issued as P. 
agropyri). 
Ex Herb. Holway. 3067 (Hordeum 
jubatum , Mexico, Oct , 1898. Issued 
as P. rubigo-vera ). 
ECONOMIC IMPORTANCE OF STRIPE 
RUST IN THE UNITED STATES 
From present knowledge of the great 
economic importance of stripe rust in 
Europe, especially on wheat, and from 
the evidence of its virulence in the 
United States, particularly as noted on 
certain wheat varieties, it is not 
improbable that under optimum condi¬ 
tions its ravages might prove a serious 
menace to wheat culture on this 
continent. 
It is more fully brought out later that 
the severity of the attacks on different 
organs of the wheat plant varies 
markedly with the variety. For 
example, in certain varieties of wheat, 
especially Chul, which is grown to a 
limited extent in the Western States, 
the attack is very severe on the glumes 
and kernels and rather indifferent on 
the leaves. In varieties where this type 
of infection occurs, the results are 
frequently serious. The rusted kernels 
become greatly shrunken, their quality 
generally lowered, and the yield con¬ 
sequently much reduced (PI. 1, c). 
Possibly the most far-reaching im¬ 
portance of the attack of the disease 
on the kernels is the connection that 
this type of infection may bear to 
carrying the fungus over from one crop 
to the next. The importance of the 
attack on the glumes and stalks is also 
referred to by Blaringhem (3) who 
records the greater injury from this 
type of attack. 
In most varieties of wheat, stripe- 
rust infection is confined chiefly to the 
leaves. The abundance of such infec¬ 
tion may vary greatly. In cases where 
it is severe, 85 to 100 per cent, there 
no doubt results noticeable and serious 
injury. 
Because of its possible menace to 
wheat culture in the extensive and more 
humid wheatlands of the Mississippi 
Valley and of the Atlantic States, it is 
unquestionably important that more 
be learned about the life history of this 
rust; its present geographic distribu¬ 
tion; its behavior and effects on different 
hosts and their activities; its seasonal 
