i. 252, 253

form of, in the Mediterranean, i. 258

Fuegians, staple food of the, i. 292

Funaria hygrometrica, structure of, i. 324, 327

Fungi, enormous numbers of, i. 260 structure of, i. 260 two principal groups of, i. 260 families of, i. 261, _et seq._ poisonous matter in all, i. 264 luminous, i. 264 stems of, i. 268 spawn of the gelatinous or creamy fungi, i. 269 universality of the lower fungi, i. 273 destruction caused by them, i. 273 parasitic fungi, i. 274 conidium, or spore-dust cell, i. 279 propagation of fungi by fragments of spawn, i. 281 extreme minuteness and profusion of fungi, i. 297 sudden and often disastrous appearance of the lower fungi, i. 297 conditions necessary to the development of fungi, i. 297

Furcellaria fastigiata, mode of reproduction of, i. 229 structure and mode of reproduction of, i. 235, 238

Fusarium tremelloides, its identity with the nettle Peziza, i. 292

G

Galeolaria lutea, structure, development, and mode of reproduction of,