114 
A NOTE ON INDIAN WHEAT-RUSTS. 
and to precisely the extent that the wheat plants were affected. In 
this case too the relative immunity of the glutinous wheats against 
the earlier rust was of no avail ; these indeed were the more severely 
rusted of the two classes, precisely because they had more healthy 
tissue left to be attacked than had the other wheats. A glance 
at the field in the condition it now was recalled at once the 
description given of an outbreak of rust some years ago at Khandwa, 
though it does not necessarily follow that it was this blight the 
cultivators were endeavouring to describe. 
A search was at once instituted — and was continued almost daily 
till it became at length necessary to reap the wheat — for some local 
species apparently affected by this new rustj*^ unfortunately up 
till now this search has been unsuccessful. 
On closely examining the grain, however, it did not appear that 
this blight had done a great deal of harm. It must indeed have done 
seme, but as it did not apparently tend to cause the leaves to wilt 
and wither to the extent observable with the supposed Fuccima ruhi^ 
go^vera^ the amount of harm could not fail to be less in this case than 
with the earlier 'rust.' In the case of those wheats with the 
leanest and most shrivelled grains, it was of course impossible to 
say that all the mischief had been done by the first blight; as, 
however, the barley, which had remained immune from the first one, 
ripened grain of a very fair quality though suffering so severely, 
to outward appearance, from the second rust, it is only reasonable to 
conclude that most of the mischief done to the wheat was done by 
the supposed Puccinia rubtgo^vera. 
The following are the principal distinctive features which 
characterise the various forms of rust occurring on wheat and barley 
that have been described above : — 
1 . — The Shibpur rust on wheat. 
Uredospores,'~^Son circular or shortly oval, universally and 
evenly distributed over the upper surfaces of the leaves, warm 
yellow, pulverulent. Spores ioore or less circular, with elongated 
pedicels, and 4 to 5 germ-pores, echinulate, brilliant yellow, 24 x 
24 
II.— The Mozufferpur rust on wheat and barley. 
U vcdospores,^Sox\ very large, elliptical or linear, much warmer 
orange than those of the Shibpur rust. Spores long oval, echin- 
ulate, orange, with 3 or 4 germ -pores situated equatorially, 34*4 
X 17*6 fx . 
