HOFFMANN: FLORA OF BERKSHIRE COUNTY. 
361 
Observations on Soil Relations. 
Observations made, during one season with the field set devised by 
Mr. E. T. Wherry for testing the alkaHnity and acidity of the soil 
are given below. 
Plants Growing in Leaf Mould 
Caulophjllum thalidroides in mucky pocket 
" " from slopes of Greylock, alt. 2600 ft. 
Athyrium angustifolium 
a a 
Dentaria laciriiata 
Thelypteris Goldiana 
Viola canadensis 
Hepatica acutiloba 
Viola renifolia, var. Brainerdii 
Mitchella repens 
Cypripedium pubescens (alt. 1700 ft.) 
Reaction 
10 + alk. 
3 + ac. 
10 + alk. 
3 + alk. 
7 + alk. 
3 + alk. 
neutral 
3 + acid 
Plants Growing in Low Meadows and the Edges of Bogs 
Juncus Dudleyi 
Viola affinis 
Selaginella apoda {S. apus Man. ed. 7) 
Solidago patula (four localities) 
Lobelia Kalmii 
Cypripedium hirsutum 
Parnassia caroliniana (two localities) 
u u u u 
Sarracenia purpurea 
Menyanthes trifoliata 
Vaccinium macrocarpon 
Vaccinium pennsylvanicum 
(on mossy log in calcareous marsh) 
Juncus marginatus 
Carex aurea 
Ledum groenlandicum 
Potentilla fruticosa 
Drosera rotundifolia 
Mitella nuda 
10 + alk. 
10 + alk. 
7 + alk. 
neutral 
neutral 
neutral 
neutral 
10 + alk. 
3 + alk. 
3 +alk. 
3 +ac. 
3 + alk. 
3 + alk. 
3 + acid 
neutral 
3 + alk. 
7 + acid 
10 + acid 
10 + acid 
3 + acid 
neutral 
