124 
A NOTE ON INDIAN WHEAT-RUSTS. 
completely ruined their crop, leads rather to the conclusion that the 
Khandwa rust must have been different from the Mozufferpur one ; it 
may possibly have been the ‘‘ Ferozepur Rust which, as we have in- 
dicated, closely resembles true P, rubigo-vera if it be not actually 
that species. In true P, rubigo-vera the glumes are covered with 
pustules, precisely as the Xhandwa cultivators described ; it is true 
that no pustules were found on the glumes in the Punjab this season ; 
it must, however, be recollected that rust in the Panjab was this year 
almost everywhere scarce and hardly anywhere severe. 
Even if it be ultimately poss.-^le to definitely associate the Pucci- 
nia on Launea asplenifolia with one of the rusts on Indian wheat, 
and even if that rust should prove to be the most destructive of all 
the rusts that occur on wheat in the plains of India, it is some- 
what difficult to suggest any remedial measure. There is, of course, 
but one that could be of any real benefit — the extirpation of Launea 
asplenifolia. But it will, we think, be plain, from the account we 
have given of its structure and pf its distribution, that this must 
prove practically an impossible undertaking. 
Even if Launea asplenifolia were eradicated, the source of but one 
blight would be removed ; and in the meantime it Js necessary to wait 
for verification or the reverse of the connection nienti on ed as possible 
in the case of the Shibpur blight, and for. further knowledge regarding 
^he other rusts before active measures are advocated. 
O. I. C. R O.— No. 164 R. 8c A.— 2-9-96.— W B 0,-340, 
