234 



INDEX 



scrub on sandstone, 99 

 scrub on shale, 99 

 siliceous grassland, 127 

 siliceous soils, 14 

 sub-Alpine grassland, 193 

 swamps on limestone, 152 

 transitional moors, 187 

 transitional moorland and grass- 

 land, 181 



Sphagnum (see also Bog Moss), 184 

 Moors, 166 

 in peat, 184 



Stable plant associations, 20 

 Strata of the District, Geological, 12 

 Streams, Bryophytes of, 157 



Vegetation of quickly flowing, 155 

 Structure of moorland plants, 145, 



174 



Sub-alpine grassland, 104, 105, 193 

 Sub-associations of plants, 19 

 Subformations of plants, 19 

 Subordinate plant associations, 21 

 Succession, 20, 94, 193 

 Succession of forest to scrub, 91, 94 

 grassland to heath, 122, 214 

 grassland to moorland, 94, 114, 



115, 181, 217 

 moorland to grassland, 186, 193, 



217 

 moorland plant associations, 188, 



217 

 scrub to grassland, 94, 115, 133, 



217 



woodland to grassland, 114, 217 

 woodland to scrub, 94, 97, 115, 



133, 214, 217 

 Summary of British plant formations 



and associations, 218 

 Summary and relations of plant com- 

 munities of the Peak District, 

 214 



Swamp xerophytes, 145, 174 

 Swamps, Juncus, 149 

 Swamps or marshes of the limestone, 



152 



sandstones and shales, 146 

 Swamps, Eeed, 154 

 Sycamore, 51, 68 



Temperature, 26, 28 



Thickets, Alder-willow, 58 



Toadstone, 9 



Transitional associations, 183, 186 



calcareous grassland, 122 



grassland and moorland, 181, 186 



moors, 166, 187 



moorland associations, 183, 187 



siliceous grassland, 186 



woods of Quercus Robur and 

 Q. sessiliflora, 45 



Trees, altitudinal limit of, 38, 88 

 Trees and shrubs of ash woods, 69 



oak woods, 47 

 Tufa, 13 

 Turnips, 205 

 Types of grassland, 104 



scenery, 3 



" Ubergangsmoor," 170 



Universal names in phytogeography, 



19, 61, 95 



Unstable associations, 20 

 Uncultivated land, Beolamation of, 



201 



Upper atmosphere, 27 

 Utilization of the peat moors, 213 

 waste land, 23 



Vaccinietum myrtilli, 182, 216 

 Vaccinium edges, 182 



Myrtillus (see Bilberry) 



ridges, 182 



Value of Vegetation Maps, 22 

 Variation of vegetation in oak woods, 



53 

 Vegetation and soils, 12, 13 



Flora and, 16 

 Vegetation maps, 18 



and floristic maps, 22 



Construction of, 18 



Value of, 22 

 Vegetation units, 17 

 Velocity of the wind, 32 

 Vernacular names in plant geography, 



95 

 Volcanic rocks, 9, 12 



Water in the peat, 173 

 Water of the moors, 173 

 Waters, Acidic, 37, 39 



Alkaline, 37, 39 



Basic, 37, 39 



Calcareous, 150 



Non-calcareous, 146 



Plant formation of fresh, 217, 



218 



Weeds of arable land, 207 

 Wheat cultivation, Altitudinal limits 



of, 205 



Willows, 48, 70 

 Wind, Velocity of the, 32 

 Woodland associations of Great Britain , 

 39 



of the Southern Pennines, 40 

 Woodland, Altitudinal limit of, 44 



Degeneration of, 91, 94 



Distribution of, 38 

 Woodland plants, Comparison of, 74, 



79 

 Woodland species, 79 



