INDEX 



613 



Maritime climate, see Oceanic climate 



— habitats, arctic, 399, 400, 401, 402 



— woodlands, tropical, 454-8, 460 

 Marjoram, 262 



Marl, 497 



Marpolia aequalis, 131 



Marram Grass, see Ammophila arenaria 



Marsh Andromeda, see Andromeda 



marigold, see Caltha palustris agg. 



plants, anatomy of, 505 



Marshland, 372, 373, 406 



Marshy tundra, 385, 387, 390 



Marsilea (Water-fern), 61 



Maslin, 226 



Mass centre, 208, 211 



Master factor etc., 9, 320, 331, 373 



Mate, see Ilex 



Matterhorn peaks, 546 



Mature soil, 297-8 



Mead, 261 



Meadow, 360, 363, 412, 444, 578 



— , alpine, 410, 412, 413 



grass, see Poa and P. pratensis s.l. 



moor, 359, 373, 374 



— Saffron, 264 



Mean, hydrosere-xerosere convergence 

 to, 328 



— temperature, annual, 286, 287 



of coldest month, 1 1 



of warmest month, 1 1, 287 



Means of dispersal, 98 



Mechanical constitution of soil, 298, 

 301 



— dispersal, 12 1-5 

 Medicago, 249 



M. sativa (Alfalfa, Lucerne), 234, 

 282, 359 

 Medicinal plants, 262-5, 266-7 

 Mediterranean Basin, former flora of, 



155 



— climate, 10, 1 1 



— discontinuous range (distribution), 



192, 194 



— elements of flora, 210, 211 



— eulittoral zone, 530 



- — region, 194, 231, 263, 279, 294, 345, 



350, 354, 355. 382 

 , crop plants of, 234, 253 



— Sea, 112, 354 



, depth inhabited by Algae in, 522 



, \egetation of, 317, 530 



Megaphanerophyte, 94 



Megaspore, 57, 59, 63, 135 



Megatherm, 211, 285 



Alegathermic Algae, 499, 528 



Melastomaceae, 430 



Melilotus, 249 



Melon, see Cucumis melo 



Melville, R., 281 



Meningitis, 26 



Menyanthes trifoliata (Bog-bean), 117 



Merismopedia, 28 



Meristem, 12, 13 



Merrill, E. D., xvii, 252 



Mertensia niaritima agg. (Oysterleaf, Sea 



Lungwort), 107, 399 

 Mesarch subsere, 324 

 Mesas, 544, 550 

 Mescal buttons, 267 

 Mesembryanthemiim spp., 366 

 Mesic condition, 328, 329 



— mean, 328 

 Mesophanerophyte, 94 

 Mesophyte, 289, 328, 452 

 Mesopotamia, 311 

 Mesosere, 324, 405, 409 

 Mesotaeniutn berggrenii, 490 

 Mesotherm, 285, 528 

 Mesothermic plants, 155, 201, 528 

 Mesozoic era, 129, 132, 136, 139, 141, 



144, 145, 149, 154 

 Mesquite, 84, 85, 258 

 Metalimnion, 477 



Metamorphic and igneous rocks, 128 

 Meteorological data, inadequacy of, 284, 



288, 320-1, 544 

 Mexico, crop plants originating in, 253 

 — , Jurassic flora of, 149 

 — , Pimis in, 345 

 — , vegetation of, 354, 360, 443, 447 



— City, fossil pollen from below, 226 

 Meyen, F. J. F., 17, 20 



Meyer, B. S., 95 

 Micro-distribution, 322 



endemic, 205 



Microclimate, 284, 294, 320, 321, 381, 

 Microcoleus chthonoplastes, 502 [547 



Microfauna, 493 

 Microflora of acidic etc. waters, 492-3, 



501 

 Microhabitat, 313, 320-2, 381, 389, 396, 



432, 550 

 Microhabitats, algal, 322 

 — , physiographic change and, 320 

 Microorganisms, economic uses, 278—9 

 — , soil, 302-4 

 Microphanerophyte, 94 

 Microplankton, 480 

 Microspore, 57, 59, 135 

 Microtherm, 285, 528 

 Microthermic Algae, 528 

 Mid Grasses, 361, 362 

 Middle-arctic belt or region, 382, 387, 

 388, 390, 393, 394, 397, 401 



heathland, 393, 394 [410 



maritime beaches, 399 



tundra, 387, 388 



Migrant birds, 112, 116, 163, 420 



— relic, 200 



Migration, 3, 5, 8, 15, 21, 97, 98, 112, 

 156, 157, 163, 165, 323 



— along railways, 119 



