LIST OF ILLUSTRATIONS.

FIG

1. Agaric in process of growth

2. Section of common mushroom

3. Sterile cells, basidia, and cystidia, from Gomphidius.

4. Polyporus giganteus (reduced).

5. Hydnum repandum (section)

6. Calocera viscosa

7. Tremella mesenterica

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64. Sporidium of Genea verrucosa

65. Alveolate sporidium of Tuber.

66. Asci, sporidia, and paraphyses of Ascobolus

67. Sporidium of Ostreichnion Americanum

68. Ascus and sporidia of Hypocrea

69. Sporidium of Sphæria ulnaspora

70. Sporidia of Valsa profusa

71. Sporidia of Massaria fædans.

72. Sporidium of Melanconis bicornis

73. Caudate sporidia of Sphæria fimiseda

74. Sporidia of Valsa thelebola

75. Sporidia of Valsa taleola

76. Sporidia of Sporormia intermedia

77. Asci and sporidia of Sphæria (Pleospora) herbarum.

78. Sporidium of Sphæria putaminum .

79. Basidia and spores of Exidia spiculosa
80. Germinating spore and corpuscles of Dacrymyces
81. Germination of Ecidium Euphorbice

82. Germinating pseudospores of Coleosporium Sonchi
83. Germinating pseudospores of Melampsora betulina
84. Germinating pseudospore of Uromyces appendiculatus
85. Germinating pseudospore of Puccinia Molinic

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