6 4 6 
INDEX 
Horiz., horizontal 
Horizontal ovule, 82 
Hornbeam, Carpinus 
Horn-nut, Trapa 
Hornwort, Ceratophyllum 
Horse-chestnut, Aesculus', -gram, 
Dolichosn -hair, vegetable, Til - 
landsia ; -radish, Cochlearia ; 
-radish-tree, Moringa pterygo - 
sperma Gaertn. ; -tail, Equise - 
turn 
Hort. (as authority to names), a 
garden name, not authenticated 
Hortensis (Lat.), of gardens 
Hortus siccus, a herbarium 
Host (parasites), 176 
Hottentot bread, Testudinaria 
Hottentot fig, Mesembryanthemum 
Hound’s tongue, Cynoglossum 
Houseleek, Sempervivum 
Huckleberry, Gaylussacia ; blue-, 
Vacciniu?n 
Huds., Hudson 
Humble-bees, 87, 92 
Humilis (Lat.), dwarf 
Humming-bird flowers, 99, 190, 
Marcgravia 
Humus, 38, 145, 175 
Huon pine, Dacrydium Franklinii 
Hook. f. 
Hyacinth, Hyacinthus ; grape-, 
Muscari ; wild-, Scilla 
Hyaline, transparent 
Hybrid, 119 
Hybridisation, 95, 100 
Hydathodes, 114 
Hydro- (Gr. pref.), water- 
Hydrophilous plants, moisture- 
loving, 61 
Hydrophytes, 150, 158 
Hydrotropism, 36 
Hygrochastic (fruit), opening by 
water-absorption 
Hygro phytic, 168 
Hymenoplera, 87 
Hypo- (Gr. pref.), under 
Hypocotyl, 36, 105, 111 
Hypogeal (germination), with 
cotyledons below ground 
Hypogynous, 71, 72, 76, 77 
Hypsophyllary leaves, bracts 
Hyssop, Hyssopus 
I., Island 
Ic., icon, figure 
Ice-plant, Mesembryanthemum 
Identification of natural orders, 138 
Ilang-ilang, Cananga 
Illegitimate fertilisation, Lythrum , 
Primula ; pollination, 95 
Imbricate aestivation, 75 
Immortelles, see Everlastings 
Imparipinnate leaf, 51 
Imphee, Sorghum vulgare Pers. 
var. 
Incanus (Lat.), hoary- white 
Incense, Styrax 
Incised leaf, 52 
Incisions of leaf, 53 
Inch, including 
Included, not projecting 
Incomplete flower, wanting one or 
more kinds of organs, 76 
Increase, rate of, 23 
Increase in thickness, see Growth 
Incumbent, Cruciferae 
Ind. , India 
Indefinite growth (stem), 155 ; in- 
florescence, 63 ; (in flowers), 
70, 78 
Indehiscent fruit, 107 
Indeterminate inflorescence, 63 
Indian-copal, white dammar, Va- 
teria ; -cork-tree, Millingtonia 
hortensis L. f. ; -corn, Zea ; 
-cress, Tropaeolum\ -fig, Opun - 
tia ; -lilac, Melia\ -meal, Zea\ 
-millet, Panicum ; -pink, Spige- 
lian -rice (Am.), Canada rice; 
-shot, Canna \ -red-wood, Chick - 
rassia ; rubber, 1 99, Landol- 
phia , Manihot ; rubber-tree, 
Ficus 
Indigenous, native 
Indigo, Indigofera 
Indo-mal. , Indo-malayan region 
Induplicate aestivation, 75 ; ver- 
nation, Palmae 
Indusium, Filicineae Leptosporan- 
giatae , Pteridophyia 
Ined., unpublished 
Inermis (Lat.), unarmed, thornless 
