134 



PLANT GEOGRAPHY 



Continental climates, 31 

 Continents, Permanence of, 9, 82 

 Cordaiteae, 16 

 Cretaceous flora, 21, 22 

 Critical temperatures, 32 

 Cromer Forest-bed, 24 

 Culm flora, 1 8 

 Cultivated plants, 2 

 Cushion-plants, 87 

 Cycadophyta, 19 

 Cycads, 16, 19, 20, 114, 121 

 Cypress- swamps, 123 



Darwin, 82 



Deserts, 37, 77, 100, 103, 104, 112 



Devonian flora, 14-16 



Dicotyledons, 20 



Diluvium, 46 



Dispersal, 62-70; occasional, 67, 



81 



Distance as barrier, 76, 77 

 Distribution-areas, 75 

 Distribution, Factors of, 27-94; 



harmonic, 81 

 Distribution of land and water, 



4,7 



Doldrums, 41 

 Dominant species, 123 

 Draining, 61 

 Drude, 93 

 Dryads, 36 



Earth's surface, 7 

 Earthworms, 52 

 Ecesis, 67 



Ecology, 5, 122-131 

 Edaphic conditions, 45 

 Eluvium, 46 

 Endemic species, 5, 67 

 Enhalid formation, 123 

 Entomophilous plants, 60 

 Environment^; organic, 55-62 

 Eocene flora, 22 

 Epiphytes, 56, in 

 Equatorial barrier, n 

 Eriocaulon, 80 

 Kspinal region, 118, 130 

 Eucalyptus, 114-116 

 Euphorbia, 108 



Europaeo- Siberian Region, 97, 98 

 Evergreen forests, 37 

 Evolution of plant- world, 7-26 



Factors of distribution, 27-94 

 Fagus, 72, 85, 114, 118 



Falkland Islands, 39, 119, 121 



Federation, 127 



Fenland, 52 



Ferns, 45 



Ficus, 109 



Fire weed, 59 



Fish and dispersal, 67 



Floras, 4 



Floristic geography, 5 



Floristic Regions, 95-121 



Fohn, 42 



Formations, Tropical, 129 



Fossil plants, 13-26 



Frigofuges, 34 



Fuegian flora, 80, 118, 121 



Galapagos Archipelago, 79 

 Gelinden beds, 22 

 Geographical conditions, 4 

 Geological conditions, 4 

 Geophytes, 33, 34 

 Germination, Temperatures of, 33 

 Ginkgo, 1 6, 19, 98 

 Glacial Period, 12, 25, 26 

 Glossopteris, 19 

 Gondwanaland, 10, 19, 24 

 Grapple-plant, 66 

 Green, Lowthian, 8 

 Greenhouse plants, 2, 40 

 Greenland fossil flora, 21 

 Guilds, 128 

 Gymnosperms, 15, 20 



Habitats, 5 



Halophytes, 50, 100, 126 

 Hardy plants, 2, 40 

 Harmonic distribution, 81 

 Heat, 30-35 



Heath flora, 59, 126, 128 

 Hekistothermic plants, 40 

 Heliophytes, 36 

 Helophytes, 123 

 Hevea, in 

 Himalaya, 88, 89 

 Hooker, 88 

 Humboldt, 31, 88 

 Humus, 49, 50 

 Hydrochores, 64 

 Hydromegathermic plants, 39 

 Hydrophytes, 123 

 Hygrophytes, 38, 123 

 Hylasa, in 



Icebergs and dispersal, 67 

 Indigenous plants, 67 



