_Sphæria aquila_, cluster of perithecia. 78 43. _Morchella gigaspora_, from Kashmir. 99 44. _Cyttaria Gunnii_ 101 45. Spores of Agarics 121 46. Spores of _Lactarius_ 121 46a. Spores of _Gomphidius_ 122 47. Spores of _Polyporus_, _Boletus_, and _Hydnum_. 122 48. _Diachea elegans_, capellitium of 123 49. Spore of _Hendersonia polycystis_. 126 50. Spores of _Dilophospora graminis_. 126 51. Spores of _Discosia_. 126 52. Spore of _Prosthemium betulinum_. 126 53. Spore of _Stegonosporium cellulosum_. 126 54. Stylospores of _Coryneum disciforme_. 126 55. Spores of _Asterosporium Hoffmanni_. 126 56. Spores of _Pestalozzia_. 126 57. _Bispora monilioides_, concatenate spores 126 58. Pseudospores of _Thecaphora hyalina_. 128 59. Pseudospores of _Puccinia_. 128 60. Pseudospores of _Triphragmium_. 128 61. Pseudospores of _Phragmidium bulbosum_. 128 62. Winter spores of _Melampsora salicina._ 128 63. Spores of _Helicocoryne_. 129 64. Sporidium of _Genea verrucosa_. 130 65. Alveolate sporidium of _Tuber_. 130 66. Asci, sporidia, and paraphyses of _Ascobolus_. 131 67. Sporidium of _Ostreichnion Americanum_. 132 68. Ascus and sporidia of _Hypocrea_. 135 69. Sporidium of _Sphæria ulnaspora_. 135 70. Sporidia of _Valsa profusa_. 135 71. Sporidia of _Massaria foedans_. 135 72. Sporidium of _Melanconis bicornis_. 135 73. Caudate sporidia of _Sphæria fimiseda_. 135 74. Sporidia of _Valsa thelebola_. 135 75. Sporidia of _Valsa taleola_. 135 76. Sporidium of _Sporormia intermedia_. 135 77. Asci and sporidia of _Sphæria_ (_Pleospora_) _herbarum_. 135 78. Sporidium of _Sphæria putaminum_. 135 79. Basidia and spores of _Exidia spiculosa_. 139 80. Germinating spore and corpuscles of _Dacrymyces_. 140 81. Germination of _Æcidium Euphorbia_. 142 82.