232 



INDEX 



Marshy places in the ash woods, 72 



oak woods, 53 

 Meso-pteridetum, 57 

 Mild humus, 54 

 Millstone grit, 7, 13 

 Mineral Salts, 7, 8 



to flora and vegetation, Relation 

 of, 161 

 Mixed calcareous grassland, 121 



plant associations, 21 



siliceous grassland, 112 

 Molinia grassland, 114, 215, 216, 219 

 Molinietumcaeruleae, 114,215,216,219 

 Moor formation, Species of the, 197 

 Moorland associations, 163 



Classification of, 166 

 Moorland, Changes in the habitat of 

 the, 93, 175 



plants, Roots of, 174 

 Moors and fens, 170 



Bilberry, 166, 182 



British, 166, 220 



Bryophytes of the, 172 



Cotton-grass, 166, 167, 183 



Firing of the, 178 



Heather, 166, 176 



Moss, 183 



Origin of the, 94, 98, 181, 186, 194 



Rainfall of the, 175 



Reservoirs on the, 213 



Retrogressive, 166, 188 



Rbacomitrium, 167 



Scirpus, 167 



Species of the heather, 179, 180, 197 



Sphagnum, 166 



Transitional, 166 

 Mountain or Carboniferous limestone, 

 8, 12, 66 



Nardetum strictae, 108 



facies of, 108 

 Nardus grassland, 106 

 Nature of cultivated land, 199 

 Neutral grassland, 105 

 Nomenclature, Ecological and Phyto- 



geographical, 19, 61 

 Non-calcareous or siliceous soils, 8, 

 12, 14 



waters, 146 



Oak and birch woods, 60 

 Pedunculate, 47 

 Sessile-fruited, 47 



Oaks from the Ash woods, Absence 

 of, 70 



Oak woods. Damp places in the, 54 

 Dry places in the, 55 

 Ground vegetation of, 53 

 Herbaceous vegetation of, 53 

 of Quercus Robur, 44 



Quercus sessiliflora, 46, 61, 215 



Transitional, 45 



Trees and shrubs of the, 47 



Variation of Vegetation in, 53 

 Oats, Cultivation of, 205 

 Open plant associations, 20 

 Origin of the cultivated land, 199 



moors, 94, 98, 181, 186, 194 



peat, 8 



scrub, 91, 94, 98 

 Oxodion, 167, 216, 217 



Passage associations, 125 



Past and present upper altitudinal 



limit of trees, 88 

 Pasture, Permanent, 105, 202 

 Peak District, General Description of 

 the, 1 



Geology of the, 5 

 Peak of Derbyshire, 1, 189 



Derbyshire, Vegetation of the sum- 

 mit of the, 189 

 Peat and Geological Maps, 12 



Bare, 191 



Buried timber in, 90 



Depth of, 173 



Fen, 168, 170 



moors, 168, 170 



moors, Altitude of, 174 



Origin of, 8 



Pine in the, 47, 89, 91 



Sand and Humus of, 173 



Utilization of the, 213 

 Pendleside (or Yoredale) rocks, 7, 13 

 Permanent pasture, 105, 202 

 Pe trophy tes, 143 



Phytogeographical nomenclature, Eco- 

 logical and, 19, 61, 95 

 Pine, 70 



in the ancient birch woods, Scots, 

 48, 64 



in the peat, 47, 89, 91 

 Plant associations, 19 



communities, 17, 19 



federation, 110 



formations, 19 



extent of, 21 



life history of, 21 



societies, 19 

 Plantations, 209 



Derelict, 210 

 Poplars, 48, 70 

 Primitive birch forest, 63 

 Progressive associations, 20 



and retrogressive scrub, 97, 98 

 Pseudo-calcareous heaths, 126 

 Pure plant associations, 21 



Quercetum roboris, 44, 220 

 sessilitlorae, 61, 46, 219 



