pidermis, 91, 111, 112, 113, 122, 135, 137, 150, 177.

_Epigaea_. See "Trailing arbutus."

_Epilobium_. See "Willow-herb."

_Epiphegus_. See "Beech-drops."

Epiphyte, 166.

_Equisetum_, _-tinae_. See "Horse-tail."

Ergot, 76.

_Erica_, _-aceae_. See "Heath."

_Erysiphe_, 70.

_Erythraea_. See "Centaury."

_Erythronium_, 146-152; Fig. 81.
leaf, 146.
stem, 146.
root, 146.
gross anatomy of stem, 147.
flower, 148.
fruit and seed, 150.
histology of stem, 150.
of leaf, 150.
of flower, 151.
of ovule and seed, 151, 152.

_Eschscholtzia_, 191.

_Eucalyptus_, 206.

_Eucyclae_, 196, 200.

_Eudorina_, 20.

_Euglena_, 11, 19; Fig. 9.

_Euonymus_. See "Spindle-tree."

_Euphorbia_, 199; Fig. 109.

_Eurotium_, 70; Fig. 42.

Evening primrose, 206.

_Exoascus_, 66.

_Fagopyrum_. See "Buckwheat."

Feather-veined. See "Pinnate-veined."

Fern, 5, 102, 104, 116.
flowering, 118; Fig. 70.
lady, 104; Fig. 70.
maiden-hair. See "Maiden-hair fern."
ostrich. See "Ostrich-fern."
sensitive, 104.
true, 117.
water. See "Water-fern."

Fertilization, 225.

Fibre, 124, 175, 177.

Fibro-vascular bundle, 107, 110, 121, 123, 135, 136, 147, 150, 159, 174.

Fig, 183.

Figwort, 215, 216; Fig. 120.

Filament (of stamen), 148, 17.

_Filices_. See "True ferns."

_Filicineae_. See "Fern."

Fir, 142.

Fission, 23.

_Flagellata_, 19.

Flagellum, 19.

Flax, 197; Fig. 107.

Flies, 229.

Flower, 128, 131.

Flowering-plant. See "Spermaphyte."

Forget-me-not, 215.

Four-o'clock, 183.

Foxglove, 217.

_Frangulinae_, 199.

_Fraxinus_. See "Ash."

Fringe-tree, 218; Fig. 122.

Fruit, 145.

_Fucaceae_, 43.

Fuchsia, 201.

_Fucus_, 42-46.
_vesiculosus_, 43; Figs. 26, 27.
general structure, 43, 44.
conceptacles, 44.
collecting plants, 44.
cells, 44.
chloroplasts, 44.
ooegonium, 45.
_platycarpus_, 45.
antheridium, 45, 46.
fertilization, 46.
germination, 46.

_Fumariaceae_. See "Fumitory."

Fumitory, 192.

_Funaria_, 93-99; Figs. 58-62.
gross anatomy, 93, 94.
protonema, 93.
"flower," 94.
structure of leaf, 94.
chloroplasts, division of, 95.
formation of starch in chloroplasts, 95.
structure of stem, 96.
root hairs, 96.
buds, 96.
antheridium spermatozoids, 96, 97.
archegonium, 97.
embryo, 98.
capsule and spores, 98, 99.
germination of spores, 99.

Fungi, culture of, 5, 54.
true. See "_