Vll 



EXPLANATION OF PLATES. 



(The magnified portions are x 320 diameters, unless where otherwise stated.) 



PLATES I. IX. 

 PESTS FLOWER GARDEN AND GARDEN VEGETABLES. 



FIG. 1. Phyllosticta helleborella, Sacc. a, section of perithecium enlarged; 6, 

 sporules x 



2. Septoria Hellebori, Thiim. a, section of perithecium enlarged ; 6, 

 sporules x 



3. Coniothyrium Hellebori, C. & M. a, sporules x 



4. Eamularia Hellebori, Fckl. a, threads and conidia x 



5. Peronospora Ficarice, Tul. Hyphse and conidia x 



6. Plasmopara pygmcea, Ung. Hyphee and conidia x 



7. Urocystis Anemones, Pers. a, glomerules of spores x 



8. jtEcidium punctatum, Pers. Two cluster- cups enlarged. a, ascidiospores x 



9. Glceosporium Aquilegice, Thiim. a, conidia x 

 10. Ascochyta Aquilegice, Eoum. a, section of perithecium enlarged ; b, 



sporules x 

 11. Phyllosticta Pceonice, S. & S. a, section of perithecium enlarged; b, 



sporules x 

 12. Cronartium Pceonice, Cast. a, column enlarged ; b, sporules x ; c, sporules 



germinating x 



13. Cladosporium Pceonice, Pass. Hyphas and conidia x 

 14. Botrytis Pceonice, Oud. Clusters of conidia in situ x 

 15. Peronospora arborescens, Berk. Portion of thread with conidia x 

 16. Cercospora Resedas, Fckl. a, hyphse and conidia x 

 17. Phyllosticta Violce, Desm. a, section of perithecium enlarged ; 6, 



sporules x 



18. Septoria Violce, West. a, section of perithecium enlarged ; 6, sporules x 

 19. Urocystis Violce, Fisch. a, glomerule of spores x 

 20. Puccinia Violce, Schum. a, uredospores ; b, teleutospores x 

 21. JEcidium Violce, Schum. a, cluster-cups ; b, acidiospores x 

 22. Puccinia cegra, Grove. a, secidiospores ; b, uredospores ; c, teleutospores x 

 23. Ramularia lactea, Desm. a, threads and conidia x 

 24. Peronospora Violce, DBy. Hypha with conidia x 

 25. Alternaria Violce, Gall. a, conidia ; b, germinating x 

 26. Cercospora Violce, S. a, hyphee and conidia x 

 27. Phyllosticta Dianthi, West. a, section of perithecium enlarged ; b, 



sporules x 



28. Ascochyta Dianthi, A. & S. With sporules x 

 29. Septoria Lychnidis, Desm. With sporules x 

 30. Peronospora parasitica, Pers. Hypha with conidia x 

 31. Septoria Sinarum, Speg. a, section of perithecium enlarged ; b, sporules x 

 32.Marsonia Delastrei, De Lacr. b, conidia x 

 33. Ustilago violacea, Pers. a, anther ; b, spores x 

 34. Sorosporium Saponarice, Eud. a, glomerule of spores x 

 35. Puccinia Dianthi, DC. a, uredospores ; b, teleutospores x 

 36. Puccinia Silenes, Schr. a, uredospores ; b, teleutospores x 

 37. Uromyces Dianthi, Nssl. a, uredospores ; b, teleutospores x 

 38. Macrosporium nobile, Vize. a, conidium x 

 39. Heterosporium echinulatum, Berk. a, threads with conidia x 

 40. Bacterium Dianthi, Ar. & B. a, sporules x 2,000 

 41. Phyllosticta destructiva, Desm. a, section of perithecium enlarged ; b, 



sporules x 



42. Puccinia Malvacearum, Corda. a, teleutospores x 

 43. Colletotrichum Althcece, South. a, conidia x 



44. Melampsora Hypericorum, DC. a, uredospores ; b, teleutospores x 

 45. Fusarium Pelargonii, Cooke. a, conidia x 

 46. Glceosporium Pelargonii, C. & M. a, conidia x 



47. Uredo Tropceoli, Desm a, uredospores x 



48. Uromyces Anthyllidis, Grev. a, uredospores ; b, teleutospores x 

 49. Septoria Rosarum, West. With sporules x 

 5Q.Actinonema Rosce, Lib. With sporules x 



