374 



A. Barclay — List of the XJredinege 



occurring 



[Ko. S, 



In addition to these, I have seen ^cidia on a species of Geranium 

 (probably nepalense) and on Ranunculus diffusus, but in each case I only 

 once found specimens, and unfortunately in each case I was unable 

 to examine them. They are extremely rare about Simla. I may here 

 also note that a very interesting ^cidium occurs on Jasminum grandi- 

 forum, L., whose life history I am now engaged in investigating, but it is 

 confined to the low-lying valleys near Simla and never appears in the 

 station, which is too high for the host. A nearly allied species {Jasminum 

 officinale, L.) which occurs abundantly in the woods about Simla never 

 harbours this parasite or that which I have described above on 

 Jasminum humile. 



DESCRIPTION OF THE PLATES. 



Plate XII. 

 : seoidiospore, x 350. 

 : peridial cells, x 350. 

 : uredospore, x 350. 

 : leaf, lower surface, natural size. 

 : leaf, upper surface, natural size. 

 : seoidiospore, 24 hours in water, x 250. 

 : promycelium, x 350. 

 : ditto. 



ditto : showing terminal sporidial formation, x 350. 

 : germinating sporidium, x 350. 

 : peridial cells, x 400. 

 : aecidiospore, x 580. 

 : uromyces spore, x 580, 

 : ascidiospore, x 350. 

 : peridial cells, x 350. 



Plate XIII. 

 leaf, lower surface, natural size, 

 ditto, upper surface, natural size, 

 stem attacked, natural size, 

 peridial cells, x 350, 

 aecidiospore, x 350. 

 ascidiospore, x 350. 

 uredospore, x 350. 

 germinating uredospore, x 350. 

 teleutospore, x 350, 

 aecidiospore, x 400. 



outline of leaf showing attack : natural size, 

 aecidiospore. x 480. 

 peridial cells, x 350. 

 aecidiospore, x 350. 



basal cells of a row of aecidiospores showing intermediate 

 cells, X 480. 



1. 



Sanicula 



2. 



Ditto 



3. 



Pimpinella 



4. 



Violet 



5. 



Ditto 



6. 



Ditto 



7. 



Ditto 



8. 



Ditto 



9. 



Ditto 



10. 



Ditto 



11. 



Ditto 



12. 



Valeriana 



13. 



Ditto 



14. 



Pimpinella 



15. 



Ditto 



1. 



Ehamnus : 



2. 



Ditto : 



3. 



Ditto : 



4. 



Ditto : 



5. 



Ditto : 



6. 



Fragaria : 



7. 



Ditto : 



8. 



Ditto : 



9. 



Ditto : 



10. 



Valeriana : 



11. 



Anemone : 



12. 



Ditto : 



13. 



Thalictrum : 



14. 



Ditto : 



15. 



Ditto : 



