110 A. Barclay — A Descriptive List of the Uredinese [No. 2, 



N. B. — Since the publication of Part II of this List I have been 

 able to follow the complete life history of the Puccinia there described 

 under the name P. helvetica, Schroter, and there is no doubt that it is a 

 new species. Aecidial fructification is entirely suppressed. I have 

 given a full description of it under the name Puccinia Collettiana in the 

 Scientific Memoirs by Medical Officers of the Army of India, Part V, 

 1889. 



DESCRIPTION OF THE PLATES. 

 Plate III. 



Fig. 1. Uromyces Vossiae, nredospore. 2, ditto, telentospore. 3. Phragmi- 

 dium suhcorticium, telentospore, x 220. 3. a, ditto, aecidiospore. 4. Fhragmidium 

 Buhi, telentospore. 5. ditto, germinating, with sporidial formation. 6. ditto, 

 nredospores. 7 Melampsora Salicis Capreae, transverse section through telentospore 

 bed, X 220. 8. ditto, through uredo bed, x 220. 9. Fuccinia Fagopyri, telentos- 

 pore, and germinating nredospore. 10. Puccinia nitida, three teleutosporea and 

 nredospore. 11. Puccinia argentata, two teleutospores and nredospore. 



Plate IV. 



Fig. 1. Melampsora Sancti-Johannis, transverse section through telentospore bed, 

 X 150. 2. ditto, transverse section though leaf bearing uredo bed and spermogonia, 

 X 220. 3. ditto, natural appearance of wholly involved very young shoot. 4, 

 ditto, surface view of telentospore bed. 5. Melampsora Leptodermis, transverse sec- 

 tion though young telentospore bed, x 220. 6. ditto, though uredo bed, x 220. 

 7. Puccinia Leptodermis. 



Plate V. 



Fig. 1. Aecidium complanatum, natural appearance. 2. Aec. hrevius, natural 

 appearance. 3. J.. compZanahtm, transverse section though peridium. 4. ditto, pe- 

 ridial cells seen flat. 5. ditto, lowermost cells of row of aecidiospores, showing inter- 

 calary lamellae. 6. A . brevius, peridial cells seen flat. 7. ditto, transverse section 

 though peridium. 8. A. complanatum, aecidiospores. 9. Aec. hrevius, aecidiospores. 



Plate VI. 



Fig. 1. Ghrysomyxa Piceae, transverse section though fruit body, x 150. 2. 

 Coleosporium Campanulae, transverse section though telentospore bed, x 220. 3. 

 Goleosporium Clematidis, transverse section through telentospore bed on leaf of 0. 

 montana, x 220. 4. Coleoporium Flectranthi, transverse section through telentos- 

 pore bed, X 220. 5. Col. Clematidis, promycelium with sporidial formation (C 

 montana). 6. Caeoma Mori, sterile and fertile aecidospores. 7. Puccinia L-idis, 

 germinating nredospore. 8. Uredo Gomphrenatis, nredospore. 9. Uredo cronar- 

 tiiformis, uredospore. 10. Coleosporium Campanulae, nredospore. 



N. J3,— Unless otherwise specified all figures are x 350. 



