Sept 1.1923 Puccinia glumarum and Hosts for Variety tritici 
367 
ized race which infects that host. Thus far, it has not been possible to 
obtain the race for experiment from barley. 
Under “Character of Infection” the following five grades of infection 
have been used: 
o—No uredinia; flecks and dead areas sometimes present; portions 
of leaves sometimes killed or discolored (PI. 3 and 4). 
1— Uredinia few or minute, generally surrounded by dead areas; 
portions of leaves sometimes killed or discolored (PI. 5). 
2— Uredinia normal in appearance, but few and scattered; dis¬ 
coloration of leaf tissues common (PI. 6, A). 
3— Uredinia normal, moderately abundant; little discoloration of 
leaf tissue (PI. 6, B). 
4— Uredinia normal and very abundant, appearing uniformly over 
surface of inoculated leaf; no discoloration in early stages of 
infection (PI. 6, C). 
“Br.,” in Table II, indicates that there was pronounced browning of 
the tissue around the border of the dead areas produced by the rust 
(See PI. 3, A). 
Tabus I .—Results obtained when barley and rye varieties were inoculated with uredinio- 
spores of stripe rust from wheat 
Crop and variety. 
Number of plants. 
Character 
of infection. 
Inoculated. 
Infected. 
Barley: 
Sandrel. 
40 
O 
O 
0 . A. C. Sel. No. 7. 
45 
O 
0 
0 . A. C. Sel. No. 8. 
36 
O 
O 
Black Hull-less. 
48 
I 
2 
Tennessee Winter. 
33 
O 
O 
White Hull-less. 
63 
O 
O 
Peruvian. 
48 
0 
O 
Hannchen. 
34 
2 
2 
Trebi. 
68 
IO 
2 
Rye: 
Abruzzi. 
43 
6 
3 
Common. 
43 
12 
3 
The results of various inoculations made with Puccinia glumarum 
tritici from several sources on various wild grasses and cereals to ascertain 
which were hosts for the rust are presented briefly in Table II. In some 
cases the results represent only one trial, while in other instances several 
experiments were made. Chul wheat was used in all cases. 
