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 alkalinity and acidity of the soil 

 are given below. 



Plants Growing in Leaf Mould 



Caulephyllum thalictroides in mucky pocket 



" " from slopes of Greylock, alt. 2600 ft. 



Athyrium angustifolium 



IC it 



Dentaria laciniata 



Thelypteris Goldiana 



Viola canadensis 



Hepatica acutiloba 



Viola renifolia, var. Brainerdii 



Mitchella repens 



Cypripedium piibescens (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) 



it cc 



Solidago patula (four localities) 



Lobelia Kalmii 



Cypripedium hirsutum 



Parnassia caroliniana (two localities) 



Sarracenia purpurea 



Menyanthes trifoliata 



Vaccinium macrocarpon 



Vaccinium pennsylvanicum 



(on mossy log in calcareous marsh) 



Juncus marginatus 



Carex aurea 



Ledum groenlandicum 



Potentilla fruticosa 



Drosera rotundifolia 

 II {i 



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 



