754 



BOTANY 



Gravit}', 307 ; as cause of movement, 

 307 ; primary effect of iu the plant, 

 312 



Ground-nut, Arachis hyjwgaea 



Growing point, 101, 166, 250 



Growth, 250 ; grand period of, 257 ; 

 intercahiry, 22 ; iu thickness, anomal- 

 ous forms of, 153 ; in gymuosperms 

 and dicotyledons, 139 ; in mono- 

 cotyledons, 137 ; rate of, 257 ; in 

 thickness, 260 ; external influences 

 upon, 262 



Gruiuales, 600 



Guard-cells, 113, 195 



Guiacum, 602 



Gum, 69, 78 



Gummosis, 78 



Gutta-percha, 69, 240 



Guttiferae, 595 



CrymnaAenm, 712 



Gymnodadus, 20 



Gymnodinium, 345 



Gymnospermae, 480, 495, 526, 528 ; 

 elements of secondary gi-owth in, 144 ; 

 embryo, 505 ; elements of secondary 

 phloem iu, 148 ; female flowers, 481 ; 

 fossil, 540 ; male flowers, 481 ; micro- 

 spores, 502 ; ovule, 504 ; pollen- 

 grains, *503 ; pollination, 495 ; sexual 

 generation, 502 



GymnosjMrrang Lum, *406 



Gynaeceum, 483, 484, *485 



Gynandrae, 711 



Gynostemium, 711 



Gyromitra, 397 



Haaslia, 682 



Habit of plants, 29 



Haematococcus, *357 



Haeviatoxylon, 623 



Hagenia, 613, *613, 616 



Hairs, 115 ; glandular, *118 ; multi- 

 cellular, 117 ; stinging, 117 ; uni- 

 cellular, 117 



Hales' experiment, 203 



Halimeda, 364 



Haloj)hihi, pollination, 495 



Halorrhagidaceae, 629 



Haniamelidaceae, 561 



Hamamelidinae, 561 



Hancornia, 646 



Haplocaulescent, 28 



Haploid, 94 ; generation, 96 



Haplomitrieae, 435 



najjhmitrivm, *435, 435 



Haplostenionous flowers, 487 



Harreyella, 378 



Haustoria, 49 



Hawthoin, Crataegus {Mespilvs) oxycantha 



Hazel, Ccrylns arellana 



Heart-wood, 143, 144 



Heat, 247 ; prodiiced in respiration, 247 ; 



produced in fermentations, 248 

 Hedera, 633, *634 

 Hedychium, 711 

 Hedysareae, 626 

 Heliantheae, 682 

 Helianthemum, 593, *594 

 Helianthus, *513, *678, 683 ; embryo 



sac, *513 

 HeUchrysvm, 682 

 Heliotropism, *303 

 Heliotropium, 654 

 HeUeborus, *37, *112, *577 

 Helobiae, 686 

 HemerocaUis, *478 

 Hemidesmus, 651 

 Henbane, Hyoscyamus niger 

 Hepaticae, 425, 429 

 Heradevni, 638 

 Herbs, 29 ; perennial, 29 

 Hercogamy, 501 

 Hermaplirodite flower, 482 

 Herniaria, 570 

 Ileterobasidion, 413 

 Heterocontae, 354 

 Heteromerous lichens, 417 

 Heterophylly, 36 

 Heterospory, 446, 475 

 Heterostyly, 500 ; dimorphic, 501 ; tri- 



niorphic, 501 

 Heterothallic mucoriueae, 385 

 Heterotrophic plants, gain in carbon in. 



221 

 Jlevea, 564 

 Hibisceae, 597 

 Hibiscus, 597 



Hieracium, 678 ; apogamy, 514 

 Hilum, 515 

 Hippocastanaceae, 607 

 HipjJOjihae, 628 

 Hiiipuris, *104, 629 

 Holms, 693 

 Holly, Ilex aquifolium 

 Homoiomerous lichens, 417 

 Homology, 9 

 Honiospory, 446 

 Homothallic mucorineae, 385 

 Honeysuckle, Lonicera peridymenum 

 Hoodia, 651 

 Hop, Humidus lupulus 

 Hordeum, *106, *691, 693 ; root-apex, 



*106 

 Hornbeam, Caipinus Betulus 

 Horse-chestnut, ^1 esculus 

 Horse-tails, see Equisetinae 

 Hoy a, 651 

 Humariei, 397 



Humulus, *557 ; glandular scale, *118 

 Hyncinfhvs, 703 

 Hyaloplasm, 58 

 Hybridisation, *287 



