Gymnospermous, 153, 249.

tion, 242.

parenchyma, 194.

Gymnostomous, 183.

prosenchymatous cells, 202.

Gynophore, 127, 134.

Gynostemium, 112.

Gyration, 201.

Hairs, 30.

Half-adherent calyx, 127.

Half-equitant, 75.

Half-inferior calyx, 127.
Half-superior calyx, 127.
Hastate, 75.

Hastate-auricled, 75.
Haustoria, 185.
Heart-shaped, 75.
Heart-wood, 42.
Heat of plants, 263.
Helicoid cyme, 90.
Heliotropism, 274.

Hemicarp, 149.

Hepaticaceæ, 184, 244.

Hermaphrodite, 104, 181.

Hesperidium, 149.

Heterocism, 186.

Heterorhizal, 68.
Heterostyled, 256.
Heterotropous, 158.
Hilum, 11, 153.
Histology, 5.
Homoblastic, 168.

Homotropous, 169.

Hooded, 76.

Horizontal ovule, 154.

system, 26, 36.
Horny albumen, 163.
Horsetails, 177.
Host, 66.

Hybridation, 257.
Hybridization, 257.
Hybrids, 257.

production of, 256.
Hymenium, 188.
Hyphæ, 1, 21.
Hyphal tissue, 21, 187.
Hypochlorin, 218.
Hypocotyledonary axis, 164.
Hypocrateriform, 103.
Hypoderma, 21.

Lomentaceous, 149.

Lomentum, 145.

Longitudinal dehiscence, 111.

system, 26, 36.

Luminosity of plants, 268.

Lycopodiaceæ, 179.

Lycopodium, 179.

Lyrate, 76.

Lyrately pinnate, 76.

Lyre-shaped, 76.

Macropodous, 165.
Macrosporangia, 179.
Macrospores, 179.
Male, 243.

conceptacles, 192.
apparatus, 243.
Malting of barley, 264.
Marcescent, 100, 104.
Marchantia, 185.
Margins of leaves, 75.
Marginate, 159.
Marsilea, 178.
Marsileaceæ, 178.
Masked, 103.

Mealy albumen, 163.

Median prolification, 172.
Medulla, 209.
Medullary rays, 36, 44.
functions of, 210.
rays, secondary, 36, 44.
sheath, 40.
Megaspores, 179.
Membranous, 99.

Mericarp, 149.

Merismatic, 196.

Meristem, 44, 196.
Mesocarp, 137.

Mesophyl, 71.
Mesothecium, 109.
Metamorphosis, 173.

ascending, 173.
descending, 173.
direct, 173.

retrograde, 173.
Metastasis, 218.
Micropyle, 154, 155.

Microsporangia, 179.

Oblong, 100.

Microspores, 179.

Obovate, 76.

Mixed inflorescence, 92.

Obsolete, 49.

Periblem, 62.

Pericarp, 137.

dehiscent, 139.

indehiscent, 139.

Perichætial, 180.

Periderm, 45.

Perigone, 181.

Perigonial, 181.

Perigynous, 112, 118.
Periodical movements, 271.
Peripherical, 168.
Perisperm, 162, 163.
Peristome, 183.
Perithecia, 190.

Permanent tissue, 44.

Persistent, 83, 69, 104.

Personate, 103.

Petaloid, 96, 99, 106, 132.
Petals, 100, 170.
Petiolate, 75.
Petiole, 71, 76.
Petiolule, 76.
Phænogamous, 3.
Phanerogamous, 3.
Phelloderm, 45.
Phelloderma, 45.

Phloëm, 38, 45.
Phragmata, 125.
Phycomycetes, 185.
Phyllocyanin, 221.
Phyllode, 77.

Phylloid peduncle, 82.

Phyllome, 68.

Phylloxanthein, 221.
Phylloxanthin, 221.

Physiological botany, 194, 225.
Physiology, 225.

of the elementary structures, 225.