FUNGOID TESTS OF FOREST TUBES. 



12. — Phlceospora ulmi, Fries.— a, section of perithecium ; b, sporules x 400. 

 13 Piggotia astroidea, Berk. — a, conidia x 400. 



14. — Phyllachora ulmi, Fckl. — a, section of stroma ; b, ascus and ascospores x 



400. 



15. — Septoria fraxini, Desm. — a, section of perithecium ; b, sporules x 400. 



16. — Gloeospoiium umbrinellwn, B. & Br. — Hyphte with conidia x 400. 



17. — Microstoma album, Desm.— Basidia and conidia x 400. 

 18 livedo quercus, Brond. — a, uredospores x 400. 



19. — Stereum hirsutum, Fries. — a, basidium with spores x 400. 



20. — Stcream frustulosum, Fries. — a, basidia with spores x 400. 



21. — Diaporthe talcola, Sacc— a, pustules enlarged ; b, section of stroma ; c, 



conidia ; d, ascus and ascospores x 400. 



22. — Plujtophthora omnivora, DBy. 



23. — Gloeosporium carpini, Desm.— a, pustule enlarged ; b, conidia x 400. 



24. — Gnomoniclla fimbriata, A. & S. — a, section of perithecia enlarged ; b, asco- 



spores x 400. 

 26. — Phyllosticta betulina, Sacc. — a, conidia x 400. 



26. — Melampsora betulina, Pers. — a, uredospores; 6, teleutospores ; c, teleuto- 



spores germinating x 400. 



27. — Dothidella betulina, Fries.— a, section of stroma enlarged ; b, ascospores x 



400. 



28. — Septoria til'ue, West. — a, section of perithecium enlarged ; b, conidia x 400. 



29. — Septoria alnicola, Cooke. — a, section of perithecium ; b, conidia x 400. 



30. — Passalora bacilligera, Fres. — a, hyphas with conidium ; b, conidia x 400. 



31. — Septoria populi, Desm. — a, section of perithecium; b, conidia x 400. 



32. — Marsonia populi, Lib. — a, section of pustule ; 6, conidia x 400. 



33. — Gloeosporium tremula, Lib.— a, section of pustule ; b, conidia x 400. 



34. — Melampsora tremulw, Tul.— a, uredospores ; b, teleutospores x 400. 



35. — Melampsora tecidioides, DC. — a, uredospores ; b, teleutospores x 400. 



36. — Melampsora populina, J acq. — a, uredospores ; b, teleutospores x 400. 



37 — Taphrina aurea, Fries. — a, section of blister ; b, ascus and spores ; c, asco- 

 spores x 400. 



38. — Septoria salicicola, Fries. — a, section of perithecium enlarged ; b, conidia x 



400. 



39. — Melampsora vitelli)ia, DC. — Uredospores x 400. 



40. — Melampsora mixta, Thiim. — Uredospores x 400. 



41. — Melampsora epitea, Kunze. — a, uredospores ; b, teleutospores x 400. 



42. — Melampsora farinosa, Pers. — a, uredospores ; b, teleutospores x 400. 



43. — Rhytisma salicinum, Pers. — a, section of .stroma ; b, ascus and ascospores; 



c, ascospores x 400. 



44 — Uncinula adunca, Walk. — a, perithecium with appendages, enlarged ; b, ascus 

 with ascospores x 400. 



45. —Pestalozzia Hartigii, Tub.— Conidia in various stages x 400. 



46. — Peridermium pint, Walk. — a, cluster-cup, enlarged; b, aecidiospores x 400. 

 £7 Peridermium elatinum, A. & S.--i£cidiospores x 400. 



48. — JEcidium pseudocolumnarc, Kuhn. — a, cluster-cup, enlarged ; b, ascidiospore 

 x 400. 



50. — Caioma pinitorquum, Bv.—a, a3cidiospores x 400. 



51. — Nectria citcurbitula, Fries. — a, cluster of perithecia, enlarged ; b, ascospores 



x 400. 



52. —Lophodermium pinastri, Chev. — a, perithecium enlarged ; 6, ascospore x 



400. 



53. — Cteoma laricis, West, —a, secidiospores x 400. 



54. — Dasyscyplia calycina, Fries.— b, cup ; c, section; d, ascospores x 400. 



